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Intervention StudyNCT04347096

Effects of an mHealth Intervention to Improve Health Behaviors Among Sedentary Workers

A study testing mHealth Intervention in people with Intervention Study and Health Behavior, run by China Medical University Hospital at 1 site in Taiwan.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

Background: Studies have shown the negative impact of physical inactivity, sedentary and unhealthy eating behavior on worker health and productivity. Sedentary workers are at greater risk of developing chronic diseases due to these behavioral risk factors. Read more about this study

Who is it for?
Ages 20 years and olderHealthy volunteers can take part
Conditions the study is for
Intervention Study, Health Behavior
What is being tested?
mHealth Intervention
Could I receive a placebo?
No, everyone receives an active treatment
How many people
101 participants
Where
1 siteTaiwan
Study dates
27 Apr 2020to 31 Dec 2022
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 20 years and older
  • All sexes
  • Healthy volunteers accepted
  • Adult, Older adult

Who may be able to join

  • Full-time employees with sedentary occupations that involve sitting most of the time.
  • Age 20 years and older.
  • No physical limitations that would prevent them from performing physical activity.
  • Has access to the Internet.

Who cannot join

  • Part-time employees.
  • Has an expected absence from work for more than two weeks or an expected relocation to another workplace within the next 3 months.
  • Pregnant or planning to get pregnant within the next 3 months.

Trial locations and contacts

1 site in 1 country.

Taiwan1 site
  • China Medical University

    Taichung, N/A = Not Applicable, 40402

Other trials in Taiwan

About this study

Official title: Effects and Cost-effectiveness of an mHealth Intervention to Improve Diet, Physical Activity and Sedentary Behavior Among Sedentary Workers

Background: Studies have shown the negative impact of physical inactivity, sedentary and unhealthy eating behavior on worker health and productivity. Sedentary workers are at greater risk of developing chronic diseases due to these behavioral risk factors. The literature moderately supports mHealth interventions for promoting physical activity and healthy diets. However, there is a dearth of research on mHealth interventions targeting the clustering of physical activity, sedentary and dietary behavior among sedentary workers in the occupational setting. Furthermore, there is a lack of evidence on its long-term sustainability and cost-effectiveness on health behaviors as well as health-related and work- related outcomes.

Purpose: To evaluate a 12-week theory-driven, tailored mHealth intervention for improving diet, physical activity and sedentary behavior among sedentary workers. Three specific aims are to: (1) determine intervention participants' perceptions of and engagement with the mHealth program components to understand intervention effects by surveys and focus groups; (2) determine the effectiveness of the mHealth intervention compared to usual care; and (3) determine the cost-effectiveness of the mHealth intervention compared to usual care, using incremental cost-effectiveness ratios (ICERs).

Read more

Methods: This is a three-year research project. Year 1 is mHealth intervention delivery and evaluation using a quasi-experimental design. Concepts of social cognitive theory of self-regulation and self-efficacy and an ecological model provide the theoretical foundation for the intervention. Year 2 will be primarily to evaluate the intervention. Year 3 will be primarily an international comparison of cost-effectiveness of mHealth interventions to improve diet, physical activity and sedentary behavior for employees.

A total of 100 sedentary workers (50 per condition) will be recruited from two workplaces. The intervention group will have access to the Internet for using a newly developed Simple health web app and receive an activity tracker. A sample of 100 is required to detect differences in primary outcomes: cardiometabolic risk biomarkers, productivity loss, body composition, physical activity, sedentary behavior, and dietary behavior; and secondary outcomes: self-report self-efficacy and self-regulation, at baseline, 3-, 12-, and 24-month follow up. Generalized estimating equations (GEE) will be used to examine intervention effects over time.

Read the detailed description

The Simple health web app will consist of six major components: (1) daily healthy eating goals and records; (2) daily physical activity goals and records; (3) daily stand-up goals and records; (4) advice and reminder; (5) educational and motivational tools; and (6) personal and team health ranking.

Being tested
mHealth Intervention, Control Intervention
Keywords
Sedentary workers, Healthy diet, Physical activity, Mobile Health, Web app, Cardiometabolic risk biomarkers, Work productivity, Cost-effectiveness
Medical subject headings
Health Behavior, Motor Activity

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • mHealth InterventionBehavioural

    The mHealth Intervention will provide sedentary workers with evidence-based information on diet, physical activity and sedentary behavior, and tailored feedback on their responses to daily records. Key features of this intervention will include individualized feedback and multimedia presentation in the form of web app. The intervention group will also receive a reliable device for wireless physical activity tracking for monitoring step counts.

    The web app will consist of seven major components: (1) daily healthy eating goals and records; (2) daily physical activity goals and records; (3) daily stand-up goals and records; (4) advice and reminder; (5) educational and motivational tools; (6) personal and team health ranking; and (7) online social network. In addition, the intervention will be enhanced with follow-up booster coaching calls bi-monthly at 2, 4, 6, 8 months after the 12-week intervention.

  • Control InterventionBehavioural

    The control intervention group will receive educational tools, which will provide knowledge on benefits of physical activity and healthy eating, health risks of sitting and unhealthy diets, and recommendations on physical activity and a balanced healthy diet for good health.

Study groups in NCT04347096
Study groupRoleWhat they receive
mHealth InterventionExperimentalThe mHealth intervention group will have access to the Internet for using a newly developed Simple health web app and receive an activity tracker. The web app users are required to: (1) wear an activity tracker every day; (2) set goals of daily stand-up, physical activity, and healthy eating bi-weekly; (3) record stand-up, physical activity, and healthy eating behaviors daily; (4) set reminders to stand-up and record health behaviors; and (5) read educational and motivational tools. After completing the behavioral record, the personal advice will automatically provide to encourage, motivate and support the user. Moreover, the user will be able to look at his/her personal and team health ranking.
Receives: Behavioral: mHealth Intervention
Control InterventionOtherThe control intervention group will only receive educational tools (usual care).
Receives: Behavioral: Control Intervention

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Objectively measured physical activity

    Physical activity will be objectively measured by the wrist-worn Fitbit Charge 3 (3-axis accelerometer)

    Measured: Changes from baseline objectively measured physical activity at 3-, 12-, and 24-month

  2. Self-report physical activity

    Physical activity will be assessed by International Physical Activity Questionnaire (IPAQ)-Taiwan short form

    Measured: Changes from baseline self-report physical activity at 3-, 12-, and 24-month

  3. Objectively measured dietary behavior

    Dietary behavior will be objectively measured with 3-day food photography

    Measured: Changes from baseline objectively measured dietary behavior at 3-, 12-, and 24-month

  4. Self-report dietary behavior

    Dietary behavior will be assessed by the Healthy Eating Behavior Inventory (HEBI)

    Measured: Changes from baseline self-report dietary behavior at 3-, 12-, and 24-month

  5. Occupational sitting and physical activity

    Occupational sitting and physical activity will be assessed by the Occupational Sitting and Physical Activity Questionnaire (OSPAQ)

    Measured: Changes from baseline occupational sitting and physical activity at 3-, 12-, and 24-month

  6. Work productivity

    Work productivity will be measured by Work Limitation Questionnaire (Taiwan) short-form (WLQ-SF)

    Measured: Changes from baseline work productivity at 3-, 12-, and 24-month

  7. Fasting blood glucose

    Fasting blood glucose will be measured by collecting fasting blood samples in the morning

    Measured: Changes from baseline fasting blood glucose at 3-, 12-, and 24-month

  8. Fasting insulin

    Fasting insulin will be measured by collecting fasting blood samples in the morning

    Measured: Changes from baseline fasting insulin at 3-, 12-, and 24-month

  9. Total cholesterol

    Total cholesterol will be measured by collecting fasting blood sample in the morning

    Measured: Changes from baseline total cholesterol at 3-, 12-, and 24-month

  10. Low-density lipoprotein (LDL) cholesterol

    LDL cholesterol will be measured by collecting fasting blood sample in the morning

    Measured: Changes from baseline LDL cholesterol at 3-, 12-, and 24-month

  11. High-density lipoprotein (HDL) cholesterol

    HDL cholesterol will be measured by collecting fasting blood sample in the morning

    Measured: Changes from baseline HDL cholesterol at 3-, 12-, and 24-month

  12. Triglycerides

    Triglycerides will be measured by collecting fasting blood samples in the morning

    Measured: Changes from baseline triglycerides at 3-, 12-, and 24-month

  13. Blood pressure

    Blood pressure will be measured twice per person via an automated sphygmomanometer using the right arm and an appropriately sized cuff. A third measurement will be taken if the systolic BP differs by >10 mmHg or the diastolic BP by >6 mmHg.

    Measured: Changes from baseline blood pressure at 3-, 12-, and 24-month

  14. Weight

    Weight will be measured by ioi 353 body composition analyzer (JAWON MEDICAL)

    Measured: Changes from baseline weight at 3-, 12-, and 24-month

  15. Abdominal circumference

    Abdominal circumference will be measured by ioi 353 body composition analyzer (JAWON MEDICAL)

    Measured: Changes from baseline abdominal circumference at 3-, 12-, and 24-month

  16. Percent body fat

    Percent body fat will be measured by ioi 353 body composition analyzer (JAWON MEDICAL)

    Measured: Changes from baseline percent body fat at 3-, 12-, and 24-month

  17. Soft lean mass

    Soft lean mass will be measured by ioi 353 body composition analyzer (JAWON MEDICAL)

    Measured: Changes from baseline soft lean mass at 3-, 12-, and 24-month

  18. Visceral fat area

    Visceral fat area will be measured by ioi 353 body composition analyzer (JAWON MEDICAL)

    Measured: Changes from baseline visceral fat area at 3-, 12-, and 24-month

Secondary outcomes (5)
  1. Self-efficacy for reducing sitting

    Self-efficacy for reducing sitting will be assessed by the self-efficacy for reducing sitting scale

    Measured: Changes from baseline self-efficacy for reducing sitting at 3-, 12-, and 24-month

  2. Self-efficacy for physical activity

    Self-efficacy for physical activity will be assessed by the self-efficacy for physical activity scale

    Measured: Changes from baseline self-efficacy for physical activity at 3-, 12-, and 24-month

  3. Self-efficacy for healthy eating

    Self-efficacy for healthy eating will be assessed by the self-efficacy for healthy eating scale

    Measured: Changes from baseline self-efficacy for healthy eating at 3-, 12-, and 24-month

  4. Self-regulation of sitting less and moving more

    Self-regulation of sitting less and moving more will be assessed by the self-regulation for sitting less and moving more scale

    Measured: Changes from baseline self-regulation of sitting less and moving more at 3-, 12-, and 24-month

  5. Self-regulation of eating behaviour

    Self-regulation of eating behaviour will be assessed by the Self-Regulation of Eating Behaviour Questionnaire

    Measured: Changes from baseline self-regulation of eating behaviour at 3-, 12-, and 24-month

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted15 Apr 2020
  2. Study start27 Apr 2020
  3. Primary completion31 Jul 2022
  4. Study completion31 Dec 2022

Resources

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
Non-randomised
Intervention model
Parallel groups
Masking
Single blind
Who is masked
Outcomes assessor
Enrolment
101 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT04347096
Sponsor's protocol ID
CRREC-109-017
Status last verified
Jul 2020
First submitted
13 Apr 2020
Last updated
2 Sep 2025
Results posted
No
Data monitoring committee
Yes
FDA-regulated drug
No
FDA-regulated device
No

Publications

  • Lin YP, Lu SH, Lee KC, Ma WF, Ho YF, Liao WC, Yang HT, Hong O. Short-Term Effects of an mHealth Intervention on Healthy Behaviors and Cardiometabolic Health in Sedentary Employees: Quasi-Experimental Study. JMIR Mhealth Uhealth. 2026 Apr 27;14:e70074. doi: 10.2196/70074.

    PubMed 42044372

Questions about this trial

What is this clinical trial studying?

A study testing mHealth Intervention in people with Intervention Study and Health Behavior, run by China Medical University Hospital at 1 site in Taiwan.

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 4 inclusion and 3 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: finished, as of the sponsor's last update on 2 Sep 2025. 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 Taiwan. 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?

The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.

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?

Objectively measured physical activity (time frame: Changes from baseline objectively measured physical activity at 3-, 12-, and 24-month). The study lists 18 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 NCT04347096, 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 2 Sep 2025.

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