Automobile DrivingInterMobNCT05096000
InterMob: a Randomized Controlled Trial Aimed at Reducing Car Use in Regular Car Users
A study of Automobile Driving and Active Commuting, run by Aina Chalabaev at 1 site in France.
Trial summary
Regular car use is a source of pollution and physical inactivity. InterMob is an interdisciplinary randomized controlled behavioral intervention aiming at reducing car use. The objectives of InterMob are to a) Evaluate the efficacy of a theory- and evidence-based intervention, b) Identify the mechanisms related… Read more about this study
- Who is it for?
- Ages 18 years and olderHealthy volunteers can take part
- Conditions the study is for
- Automobile Driving, Active Commuting
- Type of treatment
- Lifestyle or therapy programme
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 400 participants
- Where
- 1 siteFrance
- Study dates
- 21 Sep 2021to 30 Sep 2025
- Phase
- Interventional
- Are there results?
- None posted in the registry
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 18 years and older
- All sexes
- Healthy volunteers accepted
- Adult, Older adult
Who may be able to join
- Being at least 18 years old at the time of inclusion
- Profile: employed / unemployed / retired / on work-study or apprenticeship
- If employed : Work and live in the SMAAG territory (Metropole of Grenoble + Grésivaudan + Pays voironnais)
- If in apprenticeship/training program: Working, studying and living in the SMAAG territory (Metropole of Grenoble + Grésivaudan + Pays voironnais)
- If unemployed / retired : Reside in the SMAAG territory (Metropole of Grenoble + Grésivaudan + Pays voironnais)
- The car/motorcycle/scooter is the main mode of travel during the week (excluding weekends)
- Travels 3, 4, or 5 days by car (excluding weekdays)
- Thinks about reducing car use or has started to reduce car use - Expect to live and work in the Grenoble area in the next 2 years (Very likely and likely options)
Who cannot join
- Being a student
- Living outside the Metropole of Grenoble + Grésivaudan + Pays voironnais
- Working outside (Metropole of Grenoble + Grésivaudan + Pays voironnais)
- Studying outside (Metropole of Grenoble + Grésivaudan + Pays voironnais)
- Car/motorcycle/scooter is not the main mode of travel
- Travels 0, 1 or 2 days a week by car
- Does not intend to reduce the frequency of car use
- Does not expect to live and/or work in the Grenoble area in the next 2 years
Trial locations and contacts
1 site in 1 country.
France1 site
Univ. Grenoble-Alpes
Saint-Martin-d'Hères, Auvergne-Rhône-Alpes, 38400
About this study
Official title: InterMob: a Randomized Controlled Trial Aimed at Reducing Car Use in Regular Car Users by Combining Hard and Soft Levers
Regular car use is a source of pollution and physical inactivity. InterMob is an interdisciplinary randomized controlled behavioral intervention aiming at reducing car use. The objectives of InterMob are to a) Evaluate the efficacy of a theory- and evidence-based intervention, b) Identify the mechanisms related mobility change, and c) Identify the conditions under which the intervention is effective.
To meet these objectives, 300 regular car users living in Grenoble will be recruited and randomized in one of two arms:
Read more
- experimental group that will receive the InterMob intervention: six months of free public transport/access to a bicycle, and behavior change techniques (personalized transport advice, setting of mobility change goals, considering possible obstacles; 6 months of motivational messages to prompt goal setting and self-monitoring).
- active control group that will receive information about air pollution (discussion about the health consequences of air pollution, the association between air pollution and car use; 6 months of messages to prompt air pollution monitoring.) Follow-up measures will be carried out until 24 months after the beginning of the study (8-day measurement sessions). Five sessions will involve wearing a GPS/accelerometer, and an air pollution sensor. Participants will complete mobility logs and questionnaires measuring the psychological mechanisms related to their mobility (habits, intentions, self-efficacy), and socio-economical characteristics (number of children, accessibility) during the 8 sessions.
The investigators hypothesize that the participants allocated to experimental group will reduce the car use and increase the use of alternative modes to the car (biking, walking, public transport, and carpooling) more than the participants of the control group, and that these changes will remain. The investigators hypothesize that mobility changes will be mediated by intention and self-efficacy. The investigators hypothesize that the efficacy of the intervention will be moderated by socio-spatial factors (number of children, travel distances) and psychological factors (self-control).
The main criterion will be car use reduction and the use of alternative modes to the car. In addition, the investigators will assess physical activity (minutes of moderate-to-vigorous physical activity), the exposure to air pollution, the quality of life and the carbon footprint associated to transport.
Read the detailed description
Sample size : The investigators have calculated the sample size considering :
- the proportion of trips made by car (49% of the trips made in Grenoble Metropole are made by car according to the EMD, 2010 which is the most recent survey in the area currently available),
- the potential target population's transport behavior (a percentage of the population can be classified as reluctant drivers with positive attitudes toward other modes of transportation, this population makes 80% of their trips and could potentially reduce their car use to 64% considering the characteristics of the trips)
- the impact of past interventions (car reduction of -17%, from 50% to 33% of car use, Brockman \& Fox, 2011).
The investigators considered a statistical power of 0.8, and a significance level of 0.05 for a proportion of 80% or 50% of trips made by car in the control group. In order to detect a difference of 15% when the share of trips made by car is reduced from 80% to 65% or from 50 to 35%, the investigators need 300 individuals (i.e., 150 individuals in each group).
- Conditions
- Automobile Driving, Active Commuting
- Being tested
- InterMob: a randomized controlled trial aimed at reducing car use in regular car users, Active control: Air pollution information
- Keywords
- Transportation, Active transportation, Sustainable transportation, physical activity, air pollution
- Medical subject headings
- Motor Activity
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
InterMob: a randomized controlled trial aimed at reducing car use in regular car usersBehavioural
Intermob is a theory- and evidence-based behavioral intervention that combines public transport/bicycle and motivational techniques (action planning, personalized transport advice, goal setting).
Active control: Air pollution informationOther
The active control intervention is based on a discussion about air pollution, the effects of air pollution on health, the association between air pollution and transport.
| Study group | Role | What they receive |
|---|---|---|
| InterMob: a behavioral and economical intervention | Experimental | * 6 months of free transport/bicycle (12.5 Adding objects in the BCT, Michie et al., 2011)
* Two meetings with a coach :
1. st meeting: discussion about the motivations to change (motivational interviewing and 5.2 Salience of consequences, BCT), personalized advice of transport (4.1 Instruction on how to perform the behavior, BCT), mobility change goals, and action planning (1.1 Goal setting and 1.4 Action planning, BCT), solutions to possible obstacles (1.2 Problem solving, BCT)
2. nd meeting: discussion about the goals and the obstacles lived and resolved. If needed, personalized transport advice is given.
* "Goals notebook" to fill up for 6 months (goals need to be set every 2 weeks and obstacles if experienced)
* Weekly SMS during 6 months, prompting a) to set and adapt goals (1.7 Review outcome, BCT) and b) to do a self-feedback related to mobility change (e.g. a more important well-being) (2.4 Self-monitoring of outcomes, BCT's taxonomy) Receives: Behavioral: InterMob: a randomized controlled trial aimed at reducing car use in regular car users |
| Air pollution information: an informational group | Other | Active control group focused on air pollution information:
* Two meetings with a coach:
1. st meeting: Discussion about air pollution (definition, sources, population most affected, levels in Grenoble, the consequences on health, pollution peaks), air pollution and car use (video about the pollution exposure of car drivers and the consequences of fine particles) and, a discussion about the benefit and disadvantages of using a car (5.2 Salience of consequences according to BCT's taxonomy)
2. nd meeting: Discussion about air quality during the last weeks and they check the quality of air of the last week.
* "Observation notebook" to fill up for 6 months (quality of air in Grenoble and the pollution peaks every 2 weeks)
* Weekly SMS during 6 months prompting a) to write down the air quality of the air every two weeks and b) write down any pollution peak announced in the television/radio/telephone Receives: Other: Active control: Air pollution information |
What is being measured
The primary outcome is the main question the study is designed to answer.
Changes in car use from the baseline and the beginning of the intervention (one month after the beginning of the intervention, Month 1)
Car use (kilometers traveled and modal share) will be measured using the GPS tracks collected by a GPS device (SenseDoc) and by calculating the variables of interest from the information mentioned in the travel diary. The GPS device is used during 9 days each and the travel diary is filled up during 8 days
Measured: Baseline and one month and a half after the baseline (Month 1)
Changes in car use from the baseline and half of the intervention (Month 3)
Car use (kilometers traveled and modal share) will be measured using the GPS tracks collected by a GPS device (SenseDoc) and by calculating the variables of interest from the information mentioned in the travel diary. The GPS device is used during 9 days each and the travel diary is filled up during 8 days
Measured: Baseline, and three months after the baseline (Month 3)
Changes in car use from the baseline the end of the intervention (Month 7)
Car use (kilometers traveled and modal share) will be measured using the GPS tracks collected by a GPS device (SenseDoc) and by calculating the variables of interest from the information mentioned in the travel diary. The GPS device is used during 9 days each and the travel diary is filled up during 8 days
Measured: Baseline and seven months after the baseline (Month 7)
Changes in car use from the baseline and two months after the end of the intervention (Month 9)
Car use (kilometers traveled and modal share) will be measured by calculating the variables of interest from the information mentioned in the travel diary. Travel diary is filled up during 8 days
Measured: Baseline and nine months after the baseline (Month 9)
Changes in car use from the baseline and six months after the end of the intervention (Month 12)
Car use (kilometers traveled and modal share) will be measured by calculating the variables of interest from the information mentioned in the travel diary. Travel diary is filled up during 8 days
Measured: Baseline and one year after the baseline (Month 12)
Changes in car use from the baseline and one year after the end of the intervention (Month 18)
Car use (kilometers traveled and modal share) will be measured using the GPS tracks collected by a GPS device (SenseDoc) and by calculating the variables of interest from the information mentioned in the travel diary. The GPS device is used during 9 days each and the travel diary is filled up during 8 days
Measured: Baseline and one year and a half after the baseline (Month 18)
Changes in car use from the baseline and one year and a half after the end of the intervention (Month 24)
Car use (kilometers traveled and modal share) will be measured by calculating the variables of interest from the information mentioned in the travel diary. Travel diary is filled up during 8 days
Measured: Baseline and two years after the baseline (Month 24)
Secondary outcomes (82)
Changes in active commuting (classic or electric bike, public transport, walk, carpooling) from the baseline and and the beginning of the intervention (one month after the beginning of the intervention, Month 1)
Active commuting will be measured using the GPS tracks and by calculating the variables of interest from travel diary (kilometers traveled, modal share). The GPS device is used during 9 days each and the travel diary is filled up during 8 days.
Measured: Baseline and one month and a half after the baseline (Month 1)
Changes in active commuting (classic or electric bike, public transport, walk, carpooling) from the baseline and the half of the intervention (Month 3)
Active commuting will be measured using the GPS tracks and by calculating the variables of interest from travel diary (kilometers traveled, modal share). The GPS device is used during 9 days each and the travel diary is filled up during 8 days.
Measured: Baseline, and three months after the baseline (Month 3)
Changes in active commuting (classic or electric bike, public transport, walk, carpooling) from the baseline and the end of the intervention (Month 7)
Active commuting will be measured using the GPS tracks and by calculating the variables of interest from travel diary (kilometers traveled, modal share). The GPS device is used during 9 days each and the travel diary is filled up during 8 days.
Measured: Baseline, and seven month after the baseline (Month 7)
Changes in active commuting (classic or electric bike, public transport, walk, carpooling) from the baseline and two months after the end of the intervention (Month 9)
Active commuting will be measured by calculating the variables of interest from travel diary (kilometers traveled, modal share). The GPS device is used during 9 days each and the travel diary is filled up during 8 days.
Measured: Baseline, and nine months after the baseline (Month 9)
Changes in active commuting (classic or electric bike, public transport, walk, carpooling) from the baseline and six months after the end of the intervention (Month 12)
Active commuting will be measured by calculating the variables of interest from travel diary (kilometers traveled, modal share). The GPS device is used during 9 days each and the travel diary is filled up during 8 days.
Measured: Baseline, and one year after the baseline (Month 12)
Changes in active commuting (classic or electric bike, public transport, walk, carpooling) from the baseline and one year after the end of the intervention (Month 18)
Active commuting will be measured using the GPS tracks and by calculating the variables of interest from travel diary (kilometers traveled, modal share). The GPS device is used during 9 days each and the travel diary is filled up during 8 days.
Measured: Baseline, and one year and a half after the baseline (Month 18)
Changes in active commuting (classic or electric bike, public transport, walk, carpooling) from the baseline and one year and a half after the end of the intervention (Month 24)
Active commuting will be measured by calculating the variables of interest from travel diary (kilometers traveled, modal share). The GPS device is used during 9 days each and the travel diary is filled up during 8 days.
Measured: Baseline, and two years after the baseline (Month 24)
Changes in minutes of moderate-to-vigorous physical activity (MVPA) from the baseline and and the beginning of the intervention (one month after the beginning of the intervention, Month 1)
MVPA will be assessed by a tri-axial accelerometer (SenseDoc) with measurement frequency of 60 Hz during 9 days by the IPAQ (International Physical Activity Questionnaire) filled up once for the whole last week
Measured: Baseline and one month and a half after the baseline (Month 1)
Changes in minutes of moderate-to-vigorous physical activity (MVPA) from the baseline and the half of the intervention (Month 3)
MVPA will be assessed by a tri-axial accelerometer (SenseDoc) with measurement frequency of 60 Hz during 9 days by the IPAQ (International Physical Activity Questionnaire) filled up once for the whole last week
Measured: Baseline, and three months after the baseline (Month 3)
Changes in minutes of moderate-to-vigorous physical activity (MVPA) from the baseline and the end of the intervention (Month 7)
MVPA will be assessed by a tri-axial accelerometer (SenseDoc) with measurement frequency of 60 Hz during 9 days by the IPAQ (International Physical Activity Questionnaire) filled up once for the whole last week
Measured: Baseline, and seven month after the baseline (Month 7)
Changes in minutes of moderate-to-vigorous physical activity (MVPA) from the baseline and two months after the end of the intervention (Month 9)
MVPA will be assessed by the IPAQ (International Physical Activity Questionnaire) filled up once for the whole last week
Measured: Baseline, and nine months after the baseline (Month 9)
Changes in minutes of moderate-to-vigorous physical activity (MVPA) from the baseline and six months after the end of the intervention (Month 12)
MVPA will be assessed by the IPAQ (International Physical Activity Questionnaire) filled up once for the whole last week
Measured: Baseline, and one year after the baseline (Month 12)
Changes in minutes of moderate-to-vigorous physical activity (MVPA) from the baseline and one year after the end of the intervention (Month 18)
MVPA will be assessed by a tri-axial accelerometer (SenseDoc) with measurement frequency of 60 Hz during 9 days by the IPAQ (International Physical Activity Questionnaire) filled up once for the whole last week
Measured: Baseline, and one year and a half after the baseline (Month 18)
Changes in minutes of moderate-to-vigorous physical activity (MVPA) from the baseline and one year and a half after the end of the intervention (Month 24)
MVPA will be assessed by the IPAQ (International Physical Activity Questionnaire) filled up once for the whole last week
Measured: Baseline, and two years after the baseline (Month 24)
Changes in exposure to air quality from the baseline and the end of the intervention (Month 7)
Exposure to air quality will be measured by the assessment of the concentration and composition of fine particles using a pollution captor (MicroPEMTM) during 8 days
Measured: Baseline, and seven month after the baseline (Month 7)
Changes in exposure to air quality from the baseline and one year after the end of the intervention (Month 18)
Exposure to air quality will be measured by the assessment of the concentration and composition of fine particles using a pollution captor (MicroPEMTM) during 8 days
Measured: Baseline, and one year and a half after the baseline (Month 18)
Changes in self-reported quality of life from the baseline and the half of the intervention (Month 3)
Self-reported quality of life via questionnaire SF-12 (scale from 1 poor health to 5 good health)
Measured: Baseline, and three months after the baseline (Month 3)
Changes in self-reported quality of life from the baseline and the end of the intervention (Month 7)
SSelf-reported quality of life via questionnaire SF-12 (scale from 1 poor health to 5 good health)
Measured: Baseline, and seven month after the baseline (Month 7)
Changes in self-reported quality of life from the baseline and six months after the end of the intervention (Month 12)
Self-reported quality of life via questionnaire SF-12 (scale from 1 poor health to 5 good health)
Measured: Baseline, and one year after the baseline (Month 12)
Changes in self-reported quality of life from the baseline and one year and a half after the end of the intervention (Month 24)
Self-reported quality of life via questionnaire SF-12 (scale from 1 poor health to 5 good health)
Measured: Baseline, and two years after the baseline (Month 24)
Changes in self-reported biometrics from the baseline and and the beginning of the intervention (one month after the beginning of the intervention, Month 1)
Self-reported biometrics via biometric questionnaire
Measured: Baseline and one month and a half after the baseline (Month 1)
Changes in self-reported biometrics from the baseline and the half of the intervention (Month 3)
Self-reported biometrics via biometric questionnaire
Measured: Baseline, and three months after the baseline (Month 3)
Changes in self-reported biometrics from the baseline and the end of the intervention (Month 7)
Self-reported biometrics via biometric questionnaire
Measured: Baseline, and seven month after the baseline (Month 7)
Changes in self-reported biometrics from the baseline and one year after the end of the intervention (Month 18)
Self-reported biometrics via biometric questionnaire
Measured: Baseline, and one year and a half after the baseline (Month 18)
Motivational stage from the baseline and the end of the intervention (Month 7)
Motivational stage via a Stage-of-change questionnaire (Biehl et al., 2018)
Measured: Baseline, and seven month after the baseline (Month 7)
Motivational stage from the baseline and six months after the end of the intervention (Month 12)
Motivational stage via a Stage-of-change questionnaire (Biehl et al., 2018) (three questions that allow to classifie the people in precontemplation, contemplation, preparation, action, maintenance)
Measured: Baseline, and one year after the baseline (Month 12)
Motivational stage from the baseline and one year after the end of the intervention (Month 18)
Motivational stage via a Stage-of-change questionnaire (Biehl et al., 2018) (three questions that allow to classifie the people in precontemplation, contemplation, preparation, action, maintenance)
Measured: Baseline, and one year and a half after the baseline (Month 18)
Motivational stage from the baseline and one year and a half after the end of the intervention (Month 24)
Motivational stage via a Stage-of-change questionnaire (Biehl et al., 2018) (three questions that allow to classifie the people in precontemplation, contemplation, preparation, action, maintenance)
Measured: Baseline, and two years after the baseline (Month 24)
Green self-identity from the baseline and the end of the intervention (Month 7)
Green self-identity via green self-identity (Lalot et al. 2019) (scale from 1, Very much disagree and 7, strongly agree) to measure the strength of green self-identity
Measured: Baseline, and seven month after the baseline (Month 7)
Green self-identity from the baseline and six months after the end of the intervention (Month 12)
Green self-identity via green self-identity (Lalot et al. 2019) (scale from 1, Very much disagree and 7, strongly agree) to measure the strength of green self-identity
Measured: Baseline, and one year after the baseline (Month 12)
Green self-identity from the baseline and one year after the end of the intervention (Month 18)
Green self-identity via green self-identity (Lalot et al. 2019) (scale from 1, Very much disagree and 7, strongly agree) to measure the strength of green self-identity
Measured: Baseline, and one year and a half after the baseline (Month 18)
Green self-identity from the baseline and one year and a half after the end of the intervention (Month 24)
Green self-identity via green self-identity (Lalot et al. 2019) (scale from 1, Very much disagree and 7, strongly agree) to measure the strength of green self-identity
Measured: Baseline, and two years after the baseline (Month 24)
Changes in habits of alternative modes to the car and car use from the baseline and and the beginning of the intervention (one month after the beginning of the intervention, Month 1)
Habits of alternative modes to the car and car use via self-report habit index (Gardner et al., 2012) (scale from 1, Very much disagree and 7, strongly agree) to measure the strength of habit
Measured: Baseline and one month and a half after the baseline (Month 1)
Changes in habits of alternative modes to the car and car use from the baseline and the half of the intervention (Month 3)
Habits of alternative modes to the car and car use via self-report habit index (Gardner et al., 2012)(scale from 1, Very much disagree and 7, strongly agree) to measure the strength of habit
Measured: Baseline, and three months after the baseline (Month 3)
Changes in habits of alternative modes to the car and car use from the baseline and the end of the intervention (Month 7)
Habits of alternative modes to the car and car use via self-report habit index (Gardner et al., 2012) (scale from 1, Very much disagree and 7, strongly agree) to measure the strength of habit
Measured: Baseline, and seven month after the baseline (Month 7)
Changes in habits of alternative modes to the car and car use from the baseline and two months after the end of the intervention (Month 9)
Habits of alternative modes to the car and car use via self-report habit index (Gardner et al., 2012) (scale from 1, Very much disagree and 7, strongly agree) to measure the strength of habit
Measured: Baseline, and nine months after the baseline (Month 9)
Changes in habits of alternative modes to the car and car use from the baseline and six months after the end of the intervention (Month 12)
Habits of alternative modes to the car and car use via self-report habit index (Gardner et al., 2012)
Measured: Baseline, and one year after the baseline (Month 12)
Changes in habits of alternative modes to the car and car use from the baseline and one year after the end of the intervention (Month 18)
Habits of alternative modes to the car and car use via self-report habit index (Gardner et al., 2012) (scale from 1, Very much disagree and 7, strongly agree) to measure the strength of habit
Measured: Baseline, and one year and a half after the baseline (Month 18)
Changes in habits of alternative modes to the car and car use from the baseline and one year and a half after the end of the intervention (Month 24)
Habits of alternative modes to the car and car use via self-report habit index (Gardner et al., 2012) (scale from 1, Very much disagree and 7, strongly agree) to measure the strength of habit
Measured: Baseline, and two years after the baseline (Month 24)
Changes in intention toward alternative modes to the car and car use from the baseline and and the beginning of the intervention (one month after the beginning of the intervention, Month 1)
Intention toward alternative modes to the car and car use via intention questionnaire (Godin, 2012)
Measured: Baseline and one month and a half after the baseline (Month 1)
Changes in intention toward alternative modes to the car and car use from the baseline and the half of the intervention (Month 3)
Intention toward alternative modes to the car and car use via intention questionnaire (Godin, 2012) (scale from 1, Very much disagree and 7, strongly agree) to measure the strength of intention
Measured: Baseline, and three months after the baseline (Month 3)
Changes in intention toward alternative modes to the car and car use from the baseline and the end of the intervention (Month 7)
Intention toward alternative modes to the car and car use via intention questionnaire (Godin, 2012) (scale from 1, Very much disagree and 7, strongly agree) to measure the strength of intention
Measured: Baseline, and seven month after the baseline (Month 7)
Changes in intention toward alternative modes to the car and car use from the baseline and two months after the end of the intervention (Month 9)
Intention toward alternative modes to the car and car use via intention questionnaire (Godin, 2012) (scale from 1, Very much disagree and 7, strongly agree) to measure the strength of intention
Measured: Baseline, and nine months after the baseline (Month 9)
Changes in intention toward alternative modes to the car and car use from the baseline and six months after the end of the intervention (Month 12)
Intention toward alternative modes to the car and car use via intention questionnaire (Godin, 2012) (scale from 1, Very much disagree and 7, strongly agree) to measure the strength of intention
Measured: Baseline, and one year after the baseline (Month 12)
Changes in intention toward alternative modes to the car and car use from the baseline and one year after the end of the intervention (Month 18)
Intention toward alternative modes to the car and car use via intention questionnaire (Godin, 2012)(scale from 1, Very much disagree and 7, strongly agree) to measure the strength of intention
Measured: Baseline, and one year and a half after the baseline (Month 18)
Changes in intention toward alternative modes to the car and car use from the baseline and one year and a half after the end of the intervention (Month 24)
Intention toward alternative modes to the car and car use via intention questionnaire (Godin, 2012) (scale from 1, Very much disagree and 7, strongly agree) to measure the strength of intention
Measured: Baseline, and two years after the baseline (Month 24)
Changes in self-efficacy for alternative modes and for the car from the baseline and and the beginning of the intervention (one month after the beginning of the intervention, Month 1)
Self-efficacy for alternative modes and for the car via self-efficacy questionnaire (Schwarzer et al., 2015) (scale from 1, Very much disagree and 7, strongly agree) to measure the strength of self-efficacy
Measured: Baseline and one month and a half after the baseline (Month 1)
Changes in self-efficacy for alternative modes and for the car from the baseline and the half of the intervention (Month 3)
Self-efficacy for alternative modes and for the car via self-efficacy questionnaire (Schwarzer et al., 2015)(scale from 1, Very much disagree and 7, strongly agree) to measure the strength of self-efficacy
Measured: Baseline, and three months after the baseline (Month 3)
Changes in self-efficacy for alternative modes and for the car from the baseline and the end of the intervention (Month 7)
Self-efficacy for alternative modes and for the car via self-efficacy questionnaire (Schwarzer et al., 2015) (scale from 1, Very much disagree and 7, strongly agree) to measure the strength of self-efficacy
Measured: Baseline, and seven month after the baseline (Month 7)
Changes in self-efficacy for alternative modes and for the car from the baseline and two months after the end of the intervention (Month 9)
Self-efficacy for alternative modes and for the car via self-efficacy questionnaire (Schwarzer et al., 2015) (scale from 1, Very much disagree and 7, strongly agree) to measure the strength of self-efficacy
Measured: Baseline, and nine months after the baseline (Month 9)
Changes in self-efficacy for alternative modes and for the car from the baseline and six months after the end of the intervention (Month 12)
Self-efficacy for alternative modes and for the car via self-efficacy questionnaire (Schwarzer et al., 2015) (scale from 1, Very much disagree and 7, strongly agree) to measure the strength of self-efficacy
Measured: Baseline, and one year after the baseline (Month 12)
Changes in self-efficacy for alternative modes and for the car from the baseline and one year after the end of the intervention (Month 18)
Self-efficacy for alternative modes and for the car via self-efficacy questionnaire (Schwarzer et al., 2015) (scale from 1, Very much disagree and 7, strongly agree) to measure the strength of self-efficacy
Measured: Baseline, and one year and a half after the baseline (Month 18)
Changes in self-efficacy for alternative modes and for the car from the baseline and one year and a half after the end of the intervention (Month 24)
Self-efficacy for alternative modes and for the car via self-efficacy questionnaire (Schwarzer et al., 2015) (scale from 1, Very much disagree and 7, strongly agree) to measure the strength of self-efficacy
Measured: Baseline, and two years after the baseline (Month 24)
Changes in intention implementation from the baseline and and the beginning of the intervention (one month after the beginning of the intervention, Month 1)
Intention implementation via intention implementation questionnaire (Godin, 2012) (scale from 1, Very much disagree and 7, strongly agree) to measure the strength of intention implementation
Measured: Baseline and one month and a half after the baseline (Month 1)
Changes in intention implementation from the baseline and the half of the intervention (Month 3)
Intention implementation via intention implementation questionnaire (Godin, 2012)(scale from 1, Very much disagree and 7, strongly agree) to measure the strength of intention implementation
Measured: Baseline, and three months after the baseline (Month 3)
Changes in intention implementation from the baseline and the end of the intervention (Month 7)
Intention implementation via intention implementation questionnaire (Godin, 2012)(scale from 1, Very much disagree and 7, strongly agree) to measure the strength of intention implementation
Measured: Baseline, and seven month after the baseline (Month 7)
Changes in intention implementation from the baseline and two months after the end of the intervention (Month 9)
Intention implementation via intention implementation questionnaire (Godin, 2012)(scale from 1, Very much disagree and 7, strongly agree) to measure the strength of intention implementation
Measured: aseline, and nine months after the baseline (Month 9)
Changes in intention implementation from the baseline and six months after the end of the intervention (Month 12)
Intention implementation via intention implementation questionnaire (Godin, 2012)(scale from 1, Very much disagree and 7, strongly agree) to measure the strength of intention implementation
Measured: Baseline, and one year after the baseline (Month 12)
Changes in intention implementation from the baseline and one year after the end of the intervention (Month 18)
Intention implementation via intention implementation questionnaire (Godin, 2012) (scale from 1, Very much disagree and 7, strongly agree) to measure the strength of intention implementation
Measured: Baseline, and one year and a half after the baseline (Month 18)
Changes in intention implementation from the baseline and one year and a half after the end of the intervention (Month 24)
Intention implementation via intention implementation questionnaire (Godin, 2012) (scale from 1, Very much disagree and 7, strongly agree) to measure the strength of intention implementation
Measured: Baseline, and two years after the baseline (Month 24)
Changes in attitudes toward alternative modes to the car and toward car use from the baseline and and the beginning of the intervention (one month after the beginning of the intervention, Month 1)
Attitudes toward alternative modes to the car and toward car use via attitudes questionnaire (Godin, 2012) (scale from 1, Very much disagree and 7, strongly agree) to measure the strength of positive or negative attitudes
Measured: Baseline and one month and a half after the baseline (Month 1)
Changes in attitudes toward alternative modes to the car and toward car use from the baseline and the half of the intervention (Month 3)
Attitudes toward alternative modes to the car and toward car use via attitudes questionnaire (Godin, 2012) (scale from 1, Very much disagree and 7, strongly agree) to measure the strength of positive or negative attitudes
Measured: Baseline, and three months after the baseline (Month 3)
Changes in attitudes toward alternative modes to the car and toward car use from the baseline and the end of the intervention (Month 7)
Attitudes toward alternative modes to the car and toward car use via attitudes questionnaire (Godin, 2012) (scale from 1, Very much disagree and 7, strongly agree) to measure the strength of positive or negative attitudes
Measured: Baseline, and seven month after the baseline (Month 7)
Changes in attitudes toward alternative modes to the car and toward car use from the baseline and two months after the end of the intervention (Month 9)
Attitudes toward alternative modes to the car and toward car use via attitudes questionnaire (Godin, 2012) (scale from 1, Very much disagree and 7, strongly agree) to measure the strength of positive or negative attitudes
Measured: Baseline, and nine months after the baseline (Month 9)
Changes in attitudes toward alternative modes to the car and toward car use from the baseline and six months after the end of the intervention (Month 12)
Attitudes toward alternative modes to the car and toward car use via attitudes questionnaire (Godin, 2012) (scale from 1, Very much disagree and 7, strongly agree) to measure the strength of positive or negative attitudes
Measured: Baseline, and one year after the baseline (Month 12)
Changes in attitudes toward alternative modes to the car and toward car use from the baseline and one year after the end of the intervention (Month 18)
Attitudes toward alternative modes to the car and toward car use via attitudes questionnaire (Godin, 2012) (scale from 1, Very much disagree and 7, strongly agree) to measure the strength of positive or negative attitudes
Measured: Baseline, and one year and a half after the baseline (Month 18)
Changes in attitudes toward alternative modes to the car and toward car use from the baseline and one year and a half after the end of the intervention (Month 24)
Attitudes toward alternative modes to the car and toward car use via attitudes questionnaire (Godin, 2012) (scale from 1, Very much disagree and 7, strongly agree) to measure the strength of positive or negative attitudes
Measured: Baseline, and two years after the baseline (Month 24)
Changes in perceived susceptibility and perceived severity of getting coronavirus disease from the baseline and and the beginning of the intervention (one month after the beginning of the intervention, Month 1)
Perceived susceptibility and perceived severity of getting coronavirus disease via perceived risks questionnaire (Nexøe et al., 1999) (scale from 1, Very much disagree and 7, strongly agree) to measure the strength of perceived risks of getting COVID
Measured: Baseline and one month and a half after the baseline (Month 1)
Changes in perceived susceptibility and perceived severity of getting coronavirus disease from the baseline and the half of the intervention (Month 3)
Perceived susceptibility and perceived severity of getting coronavirus disease via perceived risks questionnaire (Nexøe et al., 1999)(scale from 1, Very much disagree and 7, strongly agree) to measure the strength of perceived risks of getting COVID
Measured: Baseline, and three months after the baseline (Month 3)
Changes in perceived susceptibility and perceived severity of getting coronavirus disease from the baseline and the end of the intervention (Month 7)
Perceived susceptibility and perceived severity of getting coronavirus disease via perceived risks questionnaire (Nexøe et al., 1999)(scale from 1, Very much disagree and 7, strongly agree) to measure the strength of perceived risks of getting COVID
Measured: Baseline, and seven month after the baseline (Month 7)
Changes in perceived susceptibility and perceived severity of getting coronavirus disease from the baseline and two months after the end of the intervention (Month 9)
Perceived susceptibility and perceived severity of getting coronavirus disease via perceived risks questionnaire (Nexøe et al., 1999)(scale from 1, Very much disagree and 7, strongly agree) to measure the strength of perceived risks of getting COVID
Measured: Baseline, and nine months after the baseline (Month 9)
Changes in perceived susceptibility and perceived severity of getting coronavirus disease from the baseline and six months after the end of the intervention (Month 12)
Perceived susceptibility and perceived severity of getting coronavirus disease via perceived risks questionnaire (Nexøe et al., 1999)(scale from 1, Very much disagree and 7, strongly agree) to measure the strength of perceived risks of getting COVID
Measured: Baseline, and one year after the baseline (Month 12)
Changes in perceived susceptibility and perceived severity of getting coronavirus disease from the baseline and one year after the end of the intervention (Month 18)
Perceived susceptibility and perceived severity of getting coronavirus disease via perceived risks questionnaire (Nexøe et al., 1999)(scale from 1, Very much disagree and 7, strongly agree) to measure the strength of perceived risks of getting COVID
Measured: Baseline, and one year and a half after the baseline (Month 18)
Changes in perceived susceptibility and perceived severity of getting coronavirus diseasefrom the baseline and one year and a half after the end of the intervention (Month 24)
Perceived susceptibility and perceived severity of getting coronavirus disease via perceived risks questionnaire (Nexøe et al., 1999)(scale from 1, Very much disagree and 7, strongly agree) to measure the strength of perceived risks of getting COVID
Measured: Baseline, and two years after the baseline (Month 24)
Changes in subjective norms toward alternative modes to the car and car use from the baseline and and the beginning of the intervention (one month after the beginning of the intervention, Month 1)
Subjective norms toward alternative modes to the car and car use via subjective norms questionnaire(Godin, 2012)(scale from 1, Very much disagree and 7, strongly agree) to measure the strength of subjective norms
Measured: Baseline and one month and a half after the baseline (Month 1)
Changes in subjective norms toward alternative modes to the car and car use from the baseline and the half of the intervention (Month 3)
Subjective norms toward alternative modes to the car and car use via subjective norms questionnaire(Godin, 2012) (scale from 1, Very much disagree and 7, strongly agree) to measure the strength of subjective norms
Measured: Baseline, and three months after the baseline (Month 3)
Changes in subjective norms toward alternative modes to the car and car use from the baseline and the end of the intervention (Month 7)
Subjective norms toward alternative modes to the car and car use via subjective norms questionnaire(Godin, 2012)(scale from 1, Very much disagree and 7, strongly agree) to measure the strength of subjective norms
Measured: Baseline, and seven month after the baseline (Month 7)
Changes in subjective norms toward alternative modes to the car and car use from the baseline and two months after the end of the intervention (Month 9)
Subjective norms toward alternative modes to the car and car use via subjective norms questionnaire(Godin, 2012)(scale from 1, Very much disagree and 7, strongly agree) to measure the strength of subjective norms
Measured: aseline, and nine months after the baseline (Month 9)
Changes in subjective norms toward alternative modes to the car and car use from the baseline and six months after the end of the intervention (Month 12)
Subjective norms toward alternative modes to the car and car use via subjective norms questionnaire(Godin, 2012)(scale from 1, Very much disagree and 7, strongly agree) to measure the strength of subjective norms
Measured: Baseline, and one year after the baseline (Month 12)
Changes in subjective norms toward alternative modes to the car and car use from the baseline and one year after the end of the intervention (Month 18)
Subjective norms toward alternative modes to the car and car use via subjective norms questionnaire(Godin, 2012)(scale from 1, Very much disagree and 7, strongly agree) to measure the strength of subjective norms
Measured: Baseline, and one year and a half after the baseline (Month 18)
Changes in subjective norms toward alternative modes to the car and car use from the baseline and one year and a half after the end of the intervention (Month 24)
Subjective norms toward alternative modes to the car and car use via subjective norms questionnaire(Godin, 2012)(scale from 1, Very much disagree and 7, strongly agree) to measure the strength of subjective norms
Measured: Baseline, and two years after the baseline (Month 24)
Changes in carbon footprint associated to transport
Carbon footprint associated to transport will be calculated considering the motorization (and type of car), kilometers traveled by car, and the use of alternative modes to the car
Measured: To be defined
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted27 Oct 2021
- Study start21 Sep 2021
- Primary completion30 Sep 2024 (estimated)
- Study completion30 Sep 2025 (estimated)
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (1)Papers the sponsor has linked to this study.
- Other trials for Automobile DrivingStudies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase N/A
- Primary purpose
- Prevention
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Double blind
- Who is masked
- Participant, Outcomes assessor
- Enrolment
- 400 participants (estimated)
Sponsor and investigators
- Lead sponsor
- Aina Chalabaev
- Sponsor type
- University, hospital or other
- Collaborators
- IDEX - Univ. Grenoble-Alpes, Région Auvergne-Rhône Alpes, Institut de Recherche en Santé Publique, France, ADEME, Institut National de la Santé Et de la Recherche Médicale, France, Métropole Grenoble-Alpes
- Responsible party
- Sponsor-investigator, Aina Chalabaev, Université Joseph Fourier
- Investigators
- Aïna Chalabaev, Professor, Study director, Laboratoire SENS, Univ. Grenoble-Alpes
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT05096000
- Sponsor's protocol ID
- INTERMOBFRUGA
- Acronym
- InterMob
- Status last verified
- Jun 2024
- First submitted
- 22 Sep 2021
- Last updated
- 27 Jun 2024
- Results posted
- No
- Data monitoring committee
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- Yes: Data dictionary, statistical analysis plan, informed consent form, analytic code will be shared.
Publications
Teran-Escobar C, Duche S, Bouscasse H, Isoard-Gatheur S, Juen P, Lacoste L, Lyon-Caen S, Mathy S, Ployon E, Risch A, Sarrazin P, Slama R, Tabaka K, Treibich C, Chardonnel S, Chalabaev A. InterMob: a 24-month randomised controlled trial comparing the effectiveness of an intervention including behavioural change techniques and free transport versus an intervention including air pollution awareness-raising on car use reduction among regular car users living in Grenoble, France. BMC Public Health. 2022 Sep 16;22(1):1763. doi: 10.1186/s12889-022-14099-4.
PubMed 36114537
Study at a glance
From the registry record, last updated by the sponsor on 27 Jun 2024. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- InterMob: a Randomized Controlled Trial Aimed at Reducing Car Use in Regular Car Users by Combining Hard and Soft Levers
- ClinicalTrials.gov ID
- NCT05096000
- Acronym / sponsor ID
- InterMob / INTERMOBFRUGA
- Conditions
- Automobile Driving, Active Commuting
- Keywords
- Transportation, Active transportation, Sustainable transportation, physical activity, air pollution
- Study type
- Interventional
- Recruitment status
- Unknown status
- Enrolment
- 400 participants (estimated)
- Lead sponsor
- Aina ChalabaevUniversity, hospital or other
- Collaborators
- IDEX - Univ. Grenoble-Alpes, Région Auvergne-Rhône Alpes, Institut de Recherche en Santé Publique, France, ADEME, Institut National de la Santé Et de la Recherche Médicale, France, Métropole Grenoble-Alpes
- Study start
- 21 Sep 2021 (actual)
- Primary completion
- 30 Sep 2024 (estimated)
- Study completion
- 30 Sep 2025 (estimated)
- First posted
- 27 Oct 2021 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
Regular car use is a source of pollution and physical inactivity. InterMob is an interdisciplinary randomized controlled behavioral intervention aiming at reducing car use. The objectives of InterMob are to a) Evaluate the efficacy of a theory- and evidence-based intervention, b) Identify the mechanisms related mobility change, and c) Identify the conditions under which the intervention is effective.
To meet these objectives, 300 regular car users living in Grenoble will be recruited and randomized in one of two arms:
- experimental group that will receive the InterMob intervention: six months of free public transport/access to a bicycle, and behavior change techniques (personalized transport advice, setting of mobility change goals, considering possible obstacles; 6 months of motivational messages to prompt goal setting and self-monitoring).
- active control group that will receive information about air pollution (discussion about the health consequences of air pollution, the association between air pollution and car use; 6 months of messages to prompt air pollution monitoring.) Follow-up measures will be carried out until 24 months after the beginning of the study (8-day measurement sessions). Five sessions will involve wearing a GPS/accelerometer, and an air pollution sensor. Participants will complete mobility logs and questionnaires measuring the psychological mechanisms related to their mobility (habits, intentions, self-efficacy), and socio-economical characteristics (number of children, accessibility) during the 8 sessions.
The investigators hypothesize that the participants allocated to experimental group will reduce the car use and increase the use of alternative modes to the car (biking, walking, public transport, and carpooling) more than the participants of the control group, and that these changes will remain. The investigators hypothesize that mobility changes will be mediated by intention and self-efficacy. The investigators hypothesize that the efficacy of the intervention will be moderated by socio-spatial factors (number of children, travel distances) and psychological factors (self-control).
The main criterion will be car use reduction and the use of alternative modes to the car. In addition, the investigators will assess physical activity (minutes of moderate-to-vigorous physical activity), the exposure to air pollution, the quality of life and the carbon footprint associated to transport.
Detailed description
Sample size : The investigators have calculated the sample size considering :
- the proportion of trips made by car (49% of the trips made in Grenoble Metropole are made by car according to the EMD, 2010 which is the most recent survey in the area currently available),
- the potential target population's transport behavior (a percentage of the population can be classified as reluctant drivers with positive attitudes toward other modes of transportation, this population makes 80% of their trips and could potentially reduce their car use to 64% considering the characteristics of the trips)
- the impact of past interventions (car reduction of -17%, from 50% to 33% of car use, Brockman \& Fox, 2011).
The investigators considered a statistical power of 0.8, and a significance level of 0.05 for a proportion of 80% or 50% of trips made by car in the control group. In order to detect a difference of 15% when the share of trips made by car is reduced from 80% to 65% or from 50 to 35%, the investigators need 300 individuals (i.e., 150 individuals in each group).
Study design
- Primary purpose
- Prevention
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Double blind (participant, outcomes assessor)
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| InterMob: a behavioral and economical intervention | Experimental | Behavioral: InterMob: a randomized controlled trial aimed at reducing car use in regular car users* 6 months of free transport/bicycle (12.5 Adding objects in the BCT, Michie et al., 2011) * Two meetings with a coach : 1. st meeting: discussion about the motivations to change (motivational interviewing and 5.2 Salience of consequences, BCT), personalized advice of transport (4.1 Instruction on how to perform the behavior, BCT), mobility change goals, and action planning (1.1 Goal setting and 1.4 Action planning, BCT), solutions to possible obstacles (1.2 Problem solving, BCT) 2. nd meeting: discussion about the goals and the obstacles lived and resolved. If needed, personalized transport advice is given. * "Goals notebook" to fill up for 6 months (goals need to be set every 2 weeks and obstacles if experienced) * Weekly SMS during 6 months, prompting a) to set and adapt goals (1.7 Review outcome, BCT) and b) to do a self-feedback related to mobility change (e.g. a more important well-being) (2.4 Self-monitoring of outcomes, BCT's taxonomy) |
| Air pollution information: an informational group | Other | Other: Active control: Air pollution informationActive control group focused on air pollution information: * Two meetings with a coach: 1. st meeting: Discussion about air pollution (definition, sources, population most affected, levels in Grenoble, the consequences on health, pollution peaks), air pollution and car use (video about the pollution exposure of car drivers and the consequences of fine particles) and, a discussion about the benefit and disadvantages of using a car (5.2 Salience of consequences according to BCT's taxonomy) 2. nd meeting: Discussion about air quality during the last weeks and they check the quality of air of the last week. * "Observation notebook" to fill up for 6 months (quality of air in Grenoble and the pollution peaks every 2 weeks) * Weekly SMS during 6 months prompting a) to write down the air quality of the air every two weeks and b) write down any pollution peak announced in the television/radio/telephone |
Who may qualify
- Ages
- 18 years and older
- Sex
- All
- Healthy volunteers
- Accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (8 listed)
- Being at least 18 years old at the time of inclusion
- The car/motorcycle/scooter is the main mode of travel during the week (excluding weekends)
- Travels 3, 4, or 5 days by car (excluding weekdays)
- Thinks about reducing car use or has started to reduce car use - Expect to live and work in the Grenoble area in the next 2 years (Very likely and likely options)
Key exclusion criteria (8 listed)
- Being a student
- Living outside the Metropole of Grenoble + Grésivaudan + Pays voironnais
- Working outside (Metropole of Grenoble + Grésivaudan + Pays voironnais)
- Studying outside (Metropole of Grenoble + Grésivaudan + Pays voironnais)
- Car/motorcycle/scooter is not the main mode of travel
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| InterMob: a randomized controlled trial aimed at reducing car use in regular car usersIntermob is a theory- and evidence-based behavioral intervention that combines public transport/bicycle and motivational techniques (action planning, personalized transport advice, goal setting). | Behavioural | InterMob: a behavioral and economical intervention |
| Active control: Air pollution informationThe active control intervention is based on a discussion about air pollution, the effects of air pollution on health, the association between air pollution and transport. | Other | Air pollution information: an informational group |
Primary outcome
Changes in car use from the baseline and the beginning of the intervention (one month after the beginning of the intervention, Month 1)
Time frame: Baseline and one month and a half after the baseline (Month 1)
Car use (kilometers traveled and modal share) will be measured using the GPS tracks collected by a GPS device (SenseDoc) and by calculating the variables of interest from the information mentioned in the travel diary. The GPS device is used during 9 days each and the travel diary is filled up during 8 days
Changes in car use from the baseline and half of the intervention (Month 3)
Time frame: Baseline, and three months after the baseline (Month 3)
Car use (kilometers traveled and modal share) will be measured using the GPS tracks collected by a GPS device (SenseDoc) and by calculating the variables of interest from the information mentioned in the travel diary. The GPS device is used during 9 days each and the travel diary is filled up during 8 days
Changes in car use from the baseline the end of the intervention (Month 7)
Time frame: Baseline and seven months after the baseline (Month 7)
Car use (kilometers traveled and modal share) will be measured using the GPS tracks collected by a GPS device (SenseDoc) and by calculating the variables of interest from the information mentioned in the travel diary. The GPS device is used during 9 days each and the travel diary is filled up during 8 days
Changes in car use from the baseline and two months after the end of the intervention (Month 9)
Time frame: Baseline and nine months after the baseline (Month 9)
Car use (kilometers traveled and modal share) will be measured by calculating the variables of interest from the information mentioned in the travel diary. Travel diary is filled up during 8 days
Changes in car use from the baseline and six months after the end of the intervention (Month 12)
Time frame: Baseline and one year after the baseline (Month 12)
Car use (kilometers traveled and modal share) will be measured by calculating the variables of interest from the information mentioned in the travel diary. Travel diary is filled up during 8 days
Changes in car use from the baseline and one year after the end of the intervention (Month 18)
Time frame: Baseline and one year and a half after the baseline (Month 18)
Car use (kilometers traveled and modal share) will be measured using the GPS tracks collected by a GPS device (SenseDoc) and by calculating the variables of interest from the information mentioned in the travel diary. The GPS device is used during 9 days each and the travel diary is filled up during 8 days
Changes in car use from the baseline and one year and a half after the end of the intervention (Month 24)
Time frame: Baseline and two years after the baseline (Month 24)
Car use (kilometers traveled and modal share) will be measured by calculating the variables of interest from the information mentioned in the travel diary. Travel diary is filled up during 8 days
82 secondary outcomes
Changes in active commuting (classic or electric bike, public transport, walk, carpooling) from the baseline and and the beginning of the intervention (one month after the beginning of the intervention, Month 1)
Time frame: Baseline and one month and a half after the baseline (Month 1)
Changes in active commuting (classic or electric bike, public transport, walk, carpooling) from the baseline and the half of the intervention (Month 3)
Time frame: Baseline, and three months after the baseline (Month 3)
Changes in active commuting (classic or electric bike, public transport, walk, carpooling) from the baseline and the end of the intervention (Month 7)
Time frame: Baseline, and seven month after the baseline (Month 7)
Changes in active commuting (classic or electric bike, public transport, walk, carpooling) from the baseline and two months after the end of the intervention (Month 9)
Time frame: Baseline, and nine months after the baseline (Month 9)
Changes in active commuting (classic or electric bike, public transport, walk, carpooling) from the baseline and six months after the end of the intervention (Month 12)
Time frame: Baseline, and one year after the baseline (Month 12)
Changes in active commuting (classic or electric bike, public transport, walk, carpooling) from the baseline and one year after the end of the intervention (Month 18)
Time frame: Baseline, and one year and a half after the baseline (Month 18)
Changes in active commuting (classic or electric bike, public transport, walk, carpooling) from the baseline and one year and a half after the end of the intervention (Month 24)
Time frame: Baseline, and two years after the baseline (Month 24)
Changes in minutes of moderate-to-vigorous physical activity (MVPA) from the baseline and and the beginning of the intervention (one month after the beginning of the intervention, Month 1)
Time frame: Baseline and one month and a half after the baseline (Month 1)
Changes in minutes of moderate-to-vigorous physical activity (MVPA) from the baseline and the half of the intervention (Month 3)
Time frame: Baseline, and three months after the baseline (Month 3)
Changes in minutes of moderate-to-vigorous physical activity (MVPA) from the baseline and the end of the intervention (Month 7)
Time frame: Baseline, and seven month after the baseline (Month 7)
Changes in minutes of moderate-to-vigorous physical activity (MVPA) from the baseline and two months after the end of the intervention (Month 9)
Time frame: Baseline, and nine months after the baseline (Month 9)
Changes in minutes of moderate-to-vigorous physical activity (MVPA) from the baseline and six months after the end of the intervention (Month 12)
Time frame: Baseline, and one year after the baseline (Month 12)
Changes in minutes of moderate-to-vigorous physical activity (MVPA) from the baseline and one year after the end of the intervention (Month 18)
Time frame: Baseline, and one year and a half after the baseline (Month 18)
Changes in minutes of moderate-to-vigorous physical activity (MVPA) from the baseline and one year and a half after the end of the intervention (Month 24)
Time frame: Baseline, and two years after the baseline (Month 24)
Changes in exposure to air quality from the baseline and the end of the intervention (Month 7)
Time frame: Baseline, and seven month after the baseline (Month 7)
Changes in exposure to air quality from the baseline and one year after the end of the intervention (Month 18)
Time frame: Baseline, and one year and a half after the baseline (Month 18)
Changes in self-reported quality of life from the baseline and the half of the intervention (Month 3)
Time frame: Baseline, and three months after the baseline (Month 3)
Changes in self-reported quality of life from the baseline and the end of the intervention (Month 7)
Time frame: Baseline, and seven month after the baseline (Month 7)
Changes in self-reported quality of life from the baseline and six months after the end of the intervention (Month 12)
Time frame: Baseline, and one year after the baseline (Month 12)
Changes in self-reported quality of life from the baseline and one year and a half after the end of the intervention (Month 24)
Time frame: Baseline, and two years after the baseline (Month 24)
Changes in self-reported biometrics from the baseline and and the beginning of the intervention (one month after the beginning of the intervention, Month 1)
Time frame: Baseline and one month and a half after the baseline (Month 1)
Changes in self-reported biometrics from the baseline and the half of the intervention (Month 3)
Time frame: Baseline, and three months after the baseline (Month 3)
Changes in self-reported biometrics from the baseline and the end of the intervention (Month 7)
Time frame: Baseline, and seven month after the baseline (Month 7)
Changes in self-reported biometrics from the baseline and one year after the end of the intervention (Month 18)
Time frame: Baseline, and one year and a half after the baseline (Month 18)
Motivational stage from the baseline and the end of the intervention (Month 7)
Time frame: Baseline, and seven month after the baseline (Month 7)
Motivational stage from the baseline and six months after the end of the intervention (Month 12)
Time frame: Baseline, and one year after the baseline (Month 12)
Motivational stage from the baseline and one year after the end of the intervention (Month 18)
Time frame: Baseline, and one year and a half after the baseline (Month 18)
Motivational stage from the baseline and one year and a half after the end of the intervention (Month 24)
Time frame: Baseline, and two years after the baseline (Month 24)
Green self-identity from the baseline and the end of the intervention (Month 7)
Time frame: Baseline, and seven month after the baseline (Month 7)
Green self-identity from the baseline and six months after the end of the intervention (Month 12)
Time frame: Baseline, and one year after the baseline (Month 12)
Green self-identity from the baseline and one year after the end of the intervention (Month 18)
Time frame: Baseline, and one year and a half after the baseline (Month 18)
Green self-identity from the baseline and one year and a half after the end of the intervention (Month 24)
Time frame: Baseline, and two years after the baseline (Month 24)
Changes in habits of alternative modes to the car and car use from the baseline and and the beginning of the intervention (one month after the beginning of the intervention, Month 1)
Time frame: Baseline and one month and a half after the baseline (Month 1)
Changes in habits of alternative modes to the car and car use from the baseline and the half of the intervention (Month 3)
Time frame: Baseline, and three months after the baseline (Month 3)
Changes in habits of alternative modes to the car and car use from the baseline and the end of the intervention (Month 7)
Time frame: Baseline, and seven month after the baseline (Month 7)
Changes in habits of alternative modes to the car and car use from the baseline and two months after the end of the intervention (Month 9)
Time frame: Baseline, and nine months after the baseline (Month 9)
Changes in habits of alternative modes to the car and car use from the baseline and six months after the end of the intervention (Month 12)
Time frame: Baseline, and one year after the baseline (Month 12)
Changes in habits of alternative modes to the car and car use from the baseline and one year after the end of the intervention (Month 18)
Time frame: Baseline, and one year and a half after the baseline (Month 18)
Changes in habits of alternative modes to the car and car use from the baseline and one year and a half after the end of the intervention (Month 24)
Time frame: Baseline, and two years after the baseline (Month 24)
Changes in intention toward alternative modes to the car and car use from the baseline and and the beginning of the intervention (one month after the beginning of the intervention, Month 1)
Time frame: Baseline and one month and a half after the baseline (Month 1)
Results and safety
Results are not available in the source record.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 27 Jun 2024.
- Derived from this study: PubMed 36114537Teran-Escobar C, Duche S, Bouscasse H, Isoard-Gatheur S, Juen P, Lacoste L, Lyon-Caen S, Mathy S, Ployon E, Risch A, Sarrazin P, Slama R, Tabaka K, Treibich C, Chardonnel S, Chalabaev A. InterMob: a 24-month randomised controlled trial comparing the effectiveness of an intervention including behavioural change techniques and free transport versus an intervention including air pollution awareness-raising on car use reduction among regular car users living in Grenoble, France. BMC Public Health. 2022 Sep 16;22(1):1763. doi: 10.1186/s12889-022-14099-4.
- Individual participant dataSharing planned: Yes. Data dictionary, statistical analysis plan, informed consent form, analytic code will be shared.
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
Aïna Chalabaev, Professor study director
Laboratoire SENS, Univ. Grenoble-Alpes
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A study of Automobile Driving and Active Commuting, run by Aina Chalabaev at 1 site in France.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 8 inclusion and 8 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: status not confirmed, as of the sponsor's last update on 27 Jun 2024. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in France. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
Results are not available in the source record.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Changes in car use from the baseline and the beginning of the intervention (one month after the beginning of the intervention, Month 1) (time frame: Baseline and one month and a half after the baseline (Month 1)). The study lists 7 primary outcomes in all. It is what the study was designed to measure, not a finding.
Where can I read the original study information?
On the ClinicalTrials.gov record for NCT05096000, which also lists 1 linked publication.
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 27 Jun 2024.