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Obesity, ChildhoodEarly Phase 1NCT07227220

Summer Youth Employment Programs for Health Promotion

A Early Phase 1 study testing Summer Youth Employment Program in people with Obesity, Childhood and Behavior, Health, run by University of Houston at 1 site in United States.

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

The purpose of this proof-of-concept study is to assess the initial signal of effectiveness of summer youth employment programs (SYEP) on understudied obesity-related outcomes in adolescents. Read more about this study

Who is it for?
Ages 14 to 17 yearsHealthy volunteers can take part
What is being tested?
Summer Youth Employment Program
Could I receive a placebo?
No, everyone receives an active treatment
How many people
15 participants
Where
1 siteUnited States
Study dates
31 Mar 2025to 29 Jul 2025
Phase
Early Phase 1
Are there results?
Yes, posted in the registrySummary in the doctors' view

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 14 to 17 years
  • All sexes
  • Healthy volunteers accepted
  • Child

Who may be able to join

  • Age 14-17 years at the time of enrollment, in accordance with Texas Child Labor Law
  • Willing to work at the summer camp for six consecutive weeks
  • Able to pass the employment admission procedure (job interview)
  • Able to obtain parental consent and provide assent for study participation

Who cannot join

  • Currently pregnant or planning to become pregnant, due to physical activity restrictions and potential weight changes that could confound study results
  • Diagnosis of an intellectual and/or physical disability requiring specialized employment regulations or intervention strategies
  • Participation in a health promotion intervention within the past six months

Trial locations and contacts

1 site in 1 country.

United States1 site
  • University of Houston

    Houston, Texas, 77204

Other trials in United States

About this study

Official title: Leveraging Summer Youth Employment Programs to Prevent Obesity in Adolescents

The purpose of this proof-of-concept study is to assess the initial signal of effectiveness of summer youth employment programs (SYEP) on understudied obesity-related outcomes in adolescents. This small-scale study is essential to identify early success and refine the intervention before scaling to a larger, more resource-intensive randomized trial. Specifically, this one-group pre-posttest study will:

Aim 1 (Primary): Evaluate if a 6-week SYEP provides an initial signal for effectiveness (maintenance or decrease in zBMI) over the summer.

Read more

Hypothesis 1: Adolescents who participated in a SYEP will maintain or decrease their BMI over the summer.

Aim 2 (Secondary): Evaluate changes in obesogenic behaviors (physical activity, sleep, sedentary, and diet) over the summer.

Hypothesis 2: Adolescents who participated in a SYEP will increase physical activity, reduce sedentary behavior, and improve sleep and diet quality over the summer.

Aim 3 (Secondary): Evaluate the feasibility of SYEP for obesity prevention intervention to inform intervention scalability.

Hypothesis 3: The SYEP program will be a feasible and acceptable intervention strategy for the prevention of obesity in adolescents over the summer.

Read the detailed description

Preliminary evidence suggests that summer employment can be an age-appropriate, structured intervention to prevent unhealthy changes in obesogenic behaviors among adolescents. While these findings are promising, none of the existing studies have measured changes in BMI over the summer or conducted comprehensive assessments of obesogenic behaviors, including diet, sedentary behavior, sleep, and physical activity. To address these gaps, this study proposes a small proof-of-concept study to assess the initial signal of effectiveness on understudied obesity-related outcomes in adolescents.

SYEPs are well-established, continuously operating initiatives over 60 years with proven benefits in academics, workforce development, and crime prevention, and may also act as obesity prevention strategies. Rather than creating new interventions, investing in and expanding access to SYEPs-programs with high demand yet limited capacity (with only ~28% of applicants matched with jobs each summer, leaving the majority on waitlists)-can offer a practical solution for youth obesity prevention.

Being tested
Summer Youth Employment Program
Medical subject headings
Pediatric Obesity, Health Behavior

What participants receive

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

  • Summer Youth Employment ProgramBehavioural

    The intervention aims to employ adolescents in paid positions for six weeks during the summer, providing them with a structured, routine-based, and adult-supervised environment similar to that of the school year.

Study groups in NCT07227220
Study groupRoleWhat they receive
Summer Youth Employment ProgramExperimentalParticipants will work as junior summer camp counselors at a University of Houston camp, up to 24 hours/week, Monday-Thursday, 8:30 AM-3:30 PM (with a 12-1 PM lunch break), for six weeks from mid-June to the end of July. Participants will assist senior counselors with indoor/outdoor activities such as games, enrichment, and academics. On Fridays, from 10 AM to 12 PM, participants will attend professional development workshops on topics such as communication, teamwork, resume building, and job search skills. From 12-2:30 PM, undergraduate staff will lead social activities and mentoring.
Receives: Behavioral: Summer Youth Employment Program

What is being measured

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

  1. Change in Age- and Sex-Specific Body Mass Index (BMI)-For-Age Z-Score (zBMI) From Baseline to Week 6

    Height and weight will be directly measured by trained staff. Each measurement will be taken twice, and the average will be used for analysis. Body mass index (BMI) will be calculated and expressed as Centers for Disease Control and Prevention (CDC) age- and sex-specific BMI-for-age z-scores (zBMI). The outcome will represent the change in zBMI from baseline to Week 6. A positive change score will indicate an increase (gain) in zBMI from baseline to Week 6, which will be considered a less favorable outcome. A negative change score will indicate a decrease in zBMI, which will be considered a favorable outcome. A change score of 0 will indicate no change in zBMI (maintenance), which will also be considered a favorable outcome for this intervention because preventing excess BMI gain during summer is a primary goal.

    Measured: Baseline and Week 6 (post)

Secondary outcomes (11)
  1. Change in Sedentary Behavior From Baseline to Week 6

    Sedentary behavior will be measured in minutes per day using a wrist-worn ActiGraph GT3X accelerometer on the non-dominant wrist over 8 consecutive days, including at least 2 valid weekdays and 1 valid weekend day. Activity intensities will be classified using cut points published by Hildebrand et al. The reported outcome will be the change in average daily sedentary behavior (minutes/day) from baseline to Week 6. A positive change score will indicate an increase in sedentary behavior, which will be considered an unfavorable outcome. A negative change score will indicate a decrease in sedentary behavior, which will be considered a favorable outcome. A change score of 0 will indicate no change in sedentary behavior (maintenance).

    Measured: Baseline and Week 6 (post)

  2. Change in Moderate-to-Vigorous Physical Activity (MVPA) From Baseline to Week 6

    Moderate-to-vigorous physical activity (MVPA) will be measured in minutes per day using a wrist-worn ActiGraph GT3X accelerometer on the non-dominant wrist over 8 consecutive days, including at least 2 valid weekdays and 1 valid weekend day. Activity intensities will be classified using cut points published by Hildebrand et al. The reported outcome will be the change in average daily MVPA (minutes/day) from baseline to Week 6. A positive change score will indicate an increase in MVPA, which will be considered a favorable outcome. A negative change score will indicate a decrease in MVPA, which will be considered an unfavorable outcome. A change score of 0 will indicate no change in MVPA (maintenance), which will also be considered a favorable outcome.

    Measured: Baseline and Week 6 (post)

  3. Change in Sleep Duration From Baseline to Week 6

    Sleep duration will be measured in minutes per day using a wrist-worn ActiGraph GT3X accelerometer on the non-dominant wrist over 8 consecutive days, including at least 2 valid weekdays and 1 valid weekend day. Sleep duration will be estimated using the heuristic algorithm looking at the distribution of change in Z-Angle (HDCZA). The reported outcome will be the change in average daily sleep duration (minutes/day) from baseline to Week 6. A positive change score will indicate an increase in sleep duration, which will be considered a favorable outcome. A negative change score will indicate a decrease in sleep duration, which will be considered an unfavorable outcome. A change score of 0 will indicate no change in sleep duration (maintenance), which will also be considered a favorable outcome.

    Measured: Baseline and Week 6 (post)

  4. Change in Screen Time From Baseline to Week 6

    Screen time in hours and minutes (e.g., television, computer, video games, smart phones, tablets) will assessed via self-report during each 8-day behavioral assessment period. Screen time will be calculated as the average daily duration (minutes/day) by summing total reported screen time across completed daily logbooks and dividing by the number of valid diary days within each assessment period. The reported outcome will be the change in average daily screen time (minutes/day) from baseline to Week 6. A positive change score will indicate an increase in screen time, which will be considered an unfavorable outcome. A negative change score will indicate a decrease in screen time, which will be considered a favorable outcome. A change score of 0 will indicate no change in screen time (maintenance), which will also be considered a favorable outcome.

    Measured: Baseline and Week 6 (post)

  5. Change in Unhealthy Food Intake From Baseline to Week 6

    Dietary intake will be assessed using the NHANES 23-item Dietary Screener Questionnaire. Adolescents will self-report consumption of food and beverage items over the past day. For this outcome, unhealthy food items will include desserts, sugar-sweetened beverages, salty snacks, and fast food items. Responses will be used to estimate daily intake frequency (times/day) of unhealthy food consumption. The reported outcome will be the change in average daily frequency of unhealthy food intake (times/day) from baseline to Week 6. A positive change score will indicate an increase in unhealthy food intake, which will be considered an unfavorable outcome. A negative change score will indicate a decrease in unhealthy food intake, which will be considered a favorable outcome. A change score of 0 will indicate no change in unhealthy food intake (maintenance), which will also be considered a favorable outcome.

    Measured: Baseline and Week 6 (post)

  6. Recruitment Capacity (Percentage Meeting Recruitment Goal)

    Recruitment capacity is the percentage meeting the recruitment goal.

    Measured: Baseline

  7. Retention

    Retention will be calculated as the percentage of enrolled participants who complete both baseline and post-intervention assessments for the primary outcome measures.

    Measured: Baseline and Week 6 (post)

  8. Fidelity

    Fidelity will be assessed through weekly unannounced direct observations using a structured checklist developed by the research team specifically for the intervention. The checklist will assess key components of intervention implementation, including adherence, dose delivered, quality of delivery, and participant engagement. Each item will be rated using either binary scoring (0 = not implemented, 1 = implemented) or a 5-point Likert scale (1 = strongly disagree to 5 = strongly agree), depending on the construct. All domain scores will be standardized and converted to a percentage scale. Each intervention session will be independently rated by two trained researcher, and ratings will be averaged. Session-level fidelity scores will then be averaged across all observation weeks to produce a single fidelity score. The fidelity score will be expressed as a percentage, with higher scores indicating greater fidelity to the intervention protocol and lower scores indicating reduced fidelity.

    Measured: Weekly during intervention (Weeks 1-6)

  9. Attendance

    Attendance will be calculated as the average number of days attended across total offered workdays, using employer time sheets.

    Measured: Weekly during intervention (Weeks 1-6)

  10. Acceptability

    Acceptability will be assessed using a quantitative satisfaction measure administered to adolescents following intervention participation. Participants will be asked to rate their likelihood of returning as a paid counselor the following summer on a scale ranging from 1 (not at all likely) to 10 (extremely likely). Individual responses will be averaged to generate a single acceptability score. The total score will range from 1 to 10, with higher scores indicating greater acceptability and willingness to participate again, and lower scores indicating lower acceptability. Scores closer to 10 will represent high acceptability, while scores closer to 1 will represent low acceptability of the intervention experience.

    Measured: Week 7 (Follow-up)

  11. Change in Healthy Food Intake From Baseline to Week 6

    Dietary intake will be assessed using the NHANES 23-item Dietary Screener Questionnaire. Adolescents will self-report consumption of food and beverage items over the past day. For this outcome, healthy food items will include fruits, vegetables, 100% fruit juice, and milk items. Responses will be used to estimate daily intake frequency (times/day) of healthy food consumption. The reported outcome will be the change in average daily frequency of healthy food intake (times/day) from baseline to Week 6. A positive change score will indicate an increase in healthy food intake, which will be considered a favorable outcome. A negative change score will indicate a decrease in healthy food intake, which will be considered an unfavorable outcome. A change score of 0 will indicate no change in healthy food intake (maintenance), which will also be considered a favorable outcome.

    Measured: Baseline and Week 6 (post)

Timeline

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

  1. First posted12 Nov 2025
  2. Study start31 Mar 2025
  3. Primary completion7 Jul 2025
  4. Study completion29 Jul 2025

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
Early Phase 1
Primary purpose
Prevention
Allocation
Not applicable
Intervention model
Single group
Model description
Single group pre- and post-test design
Masking
None (open label)
Enrolment
15 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT07227220
Sponsor's protocol ID
STUDY00005180
Other IDs
U54MD015946
Status last verified
Oct 2025
First submitted
4 Aug 2025
Last updated
27 Jul 2026
Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No

Publications

  • Czajkowski SM, Powell LH, Adler N, Naar-King S, Reynolds KD, Hunter CM, Laraia B, Olster DH, Perna FM, Peterson JC, Epel E, Boyington JE, Charlson ME. From ideas to efficacy: The ORBIT model for developing behavioral treatments for chronic diseases. Health Psychol. 2015 Oct;34(10):971-82. doi: 10.1037/hea0000161. Epub 2015 Feb 2.

    PubMed 25642841
  • Pierce B, Bowden B, McCullagh M, Diehl A, Chissell Z, Rodriguez R, Berman BM, D Adamo CR. A Summer Health Program for African-American High School Students in Baltimore, Maryland: Community Partnership for Integrative Health. Explore (NY). 2017 May-Jun;13(3):186-197. doi: 10.1016/j.explore.2017.02.002. Epub 2017 Feb 24.

    PubMed 28373062
  • Yazel-Smith L, El-Mikati HK, Adjei M, Haberlin-Pittz KM, Agnew M, Hannon TS. Integrating Diabetes Prevention Education Among Teenagers Involved in Summer Employment: Encouraging Environments for Health in Adolescence (ENHANCE). J Community Health. 2020 Aug;45(4):856-861. doi: 10.1007/s10900-020-00802-2.

    PubMed 32146639
  • Modestino AS, Paulsen RJ. Reducing inequality summer by summer: Lessons from an evaluation of the Boston Summer Youth Employment Program. Eval Program Plann. 2019 Feb;72:40-53. doi: 10.1016/j.evalprogplan.2018.09.006. Epub 2018 Sep 24.

    PubMed 30296721

Questions about this trial

What is this clinical trial studying?

A Early Phase 1 study testing Summer Youth Employment Program in people with Obesity, Childhood and Behavior, Health, run by University of Houston at 1 site in United States.

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 27 Jul 2026. 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 United States. 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.

What does this phase mean?

Early Phase 1 (sometimes called Phase 0) studies give a very small amount of a treatment to a few people, mainly to see how the body handles it.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

Yes. Results are posted in the registry (first posted 27 Jul 2026). A summary is in the For doctors view, and the full results are on ClinicalTrials.gov.

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?

Change in Age- and Sex-Specific Body Mass Index (BMI)-For-Age Z-Score (zBMI) From Baseline to Week 6 (time frame: Baseline and Week 6 (post)). 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 NCT07227220, which also lists 4 linked publications.

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 Jul 2026.

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