Adolescent HealthNCT07834307
《Increasing Outdoor Activity Time During School Recess to Improve Adolescent Health》
A study testing School Recess Outdoor Physical Activity Program in people with Adolescent Health and Physical Activities, run by Kang Zhu at 1 site in China.
Trial summary
Adolescents spend a substantial amount of time at school, and school recess provides an important opportunity for physical activity and recovery from prolonged sedentary behavior. However, insufficient outdoor activity time during school recess has become a concern for adolescent health. Read more about this study
- Who is it for?
- Ages 12 to 15 yearsHealthy volunteers can take part
- Conditions the study is for
- Adolescent Health, Physical Activities
- What is being tested?
- School Recess Outdoor Physical Activity Program
- Type of treatment
- Lifestyle or therapy programme
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 200 participants
- Where
- 1 siteChina
- Study dates
- 10 Oct 2025to 16 Jan 2026
- 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 12 to 15 years
- All sexes
- Healthy volunteers accepted
- Child
Who may be able to join
- Adolescents aged 12-15 years.
- Students enrolled in the participating schools.
- Physically healthy and able to participate in moderate-to-vigorous physical activity without restrictions.
- Written informed consent obtained from parents or legal guardians.
Who cannot join
- Adolescents with cardiovascular, respiratory, musculoskeletal, or other medical conditions that limit participation in physical activity.
- Adolescents who are unable to participate in moderate-to-vigorous physical activity as confirmed by themselves, their parents, or school health records.
- Adolescents who plan to transfer schools or are unable to complete the intervention and assessments.
Trial locations and contacts
1 site in 1 country.
China1 site
Shanghai University of Sport
Shanghai, Shanghai Municipality, 200438
About this study
Official title: 《A Study on the Effects of Increasing Outdoor Activity Time During School Recess on the Physical and Mental Health of Adolescents》
Adolescents spend a substantial amount of time at school, and school recess provides an important opportunity for physical activity and recovery from prolonged sedentary behavior. However, insufficient outdoor activity time during school recess has become a concern for adolescent health. This study is designed to examine whether increasing outdoor activity time during school recess can improve physical and mental health outcomes among adolescents. A school-based intervention study will be conducted, in which participants will receive an increased outdoor activity program during recess periods. The intervention will include structured and free outdoor physical activities designed to increase daily physical activity opportunities. Changes in physical activity levels, psychological well-being, and related health indicators will be assessed before and after the intervention.The results of this study may provide evidence for developing effective school-based strategies to promote adolescent physical activity and health.
- Conditions
- Adolescent Health, Physical Activities
- Being tested
- School Recess Outdoor Physical Activity Program
- Medical subject headings
- Motor Activity
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
School Recess Outdoor Physical Activity ProgramBehavioural
The intervention consists of a 10-week outdoor physical activity program implemented during school recess. During each recess period, classroom activities will be suspended and students in the intervention group will participate in outdoor physical activities. Various activity equipment and activity options will be provided, allowing students to select activities according to their interests and abilities. Teachers will supervise and guide students during the activities. Students will return to classrooms after the preparation bell rings. The program aims to increase outdoor activity time during school recess and promote physical and mental health among adolescents.
| Study group | Role | What they receive |
|---|---|---|
| Outdoor Physical Activity Intervention Group | Experimental | Participants in this group will receive a 10-week outdoor physical activity intervention during school recess. During each recess period, students will participate in outdoor physical activities with provided equipment and activity options. Teachers will supervise and guide students during the intervention. Students can choose different activities according to their interests and abilities. Receives: Behavioral: School Recess Outdoor Physical Activity Program |
| Control Group | No intervention | Participants in this group will maintain their usual school recess activities without additional outdoor physical activity intervention. |
What is being measured
The primary outcome is the main question the study is designed to answer.
Change in physical activity level assessed by physical activity questionnaire
Physical activity was assessed using the International Physical Activity Questionnaire-Short Form (IPAQ-SF). The questionnaire evaluates vigorous-intensity activity, moderate-intensity activity, walking, and sitting time during the previous 7 days. Physical activity levels were expressed as metabolic equivalent of task minutes per week (MET-min/week), with higher values indicating greater physical activity levels. Sitting time was reported separately as minutes per weekday, with higher values indicating greater sedentary behavior.
Measured: Baseline and 10 weeks after intervention
Change in mental health status assessed by Chinese Middle School Students Mental Health Scale
Mental health status was assessed using the Mental Health Inventory for Middle School Students in China (MMHI-60) developed by Wang Jisheng. The scale consists of 60 items rated on a 5-point Likert scale. The total score is calculated by summing all item responses, with possible scores ranging from 60 to 300. Higher scores indicate greater mental distress and poorer mental health status.
Measured: Baseline and 10 weeks after intervention
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted22 Sep 2026
- Study start10 Oct 2025
- Primary completion16 Jan 2026
- Study completion16 Jan 2026
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Adolescent HealthStudies 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
- None (open label)
- Enrolment
- 200 participants (actual)
Sponsor and investigators
- Lead sponsor
- Kang Zhu
- Sponsor type
- University, hospital or other
- Responsible party
- Sponsor-investigator, Kang Zhu, Shanghai University of Sport
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT07834307
- Sponsor's protocol ID
- SUS-PA-2026-001
- Status last verified
- Sep 2026
- First submitted
- 9 Sep 2026
- Last updated
- 22 Sep 2026
- Results posted
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- Yes: De-identified individual participant data may be shared with qualified researchers upon reasonable request and after approval by the study investigators and ethics committee.
Study at a glance
From the registry record, last updated by the sponsor on 22 Sep 2026. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- 《A Study on the Effects of Increasing Outdoor Activity Time During School Recess on the Physical and Mental Health of Adolescents》
- ClinicalTrials.gov ID
- NCT07834307
- Acronym / sponsor ID
- SUS-PA-2026-001
- Conditions
- Adolescent Health, Physical Activities
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 200 participants (actual)
- Lead sponsor
- Kang ZhuUniversity, hospital or other
- Study start
- 10 Oct 2025 (actual)
- Primary completion
- 16 Jan 2026 (actual)
- Study completion
- 16 Jan 2026 (actual)
- First posted
- 22 Sep 2026 (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.
Adolescents spend a substantial amount of time at school, and school recess provides an important opportunity for physical activity and recovery from prolonged sedentary behavior. However, insufficient outdoor activity time during school recess has become a concern for adolescent health. This study is designed to examine whether increasing outdoor activity time during school recess can improve physical and mental health outcomes among adolescents. A school-based intervention study will be conducted, in which participants will receive an increased outdoor activity program during recess periods. The intervention will include structured and free outdoor physical activities designed to increase daily physical activity opportunities. Changes in physical activity levels, psychological well-being, and related health indicators will be assessed before and after the intervention.The results of this study may provide evidence for developing effective school-based strategies to promote adolescent physical activity and health.
Study design
- Primary purpose
- Prevention
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- None (open label)
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| Outdoor Physical Activity Intervention Group | Experimental | Behavioral: School Recess Outdoor Physical Activity ProgramParticipants in this group will receive a 10-week outdoor physical activity intervention during school recess. During each recess period, students will participate in outdoor physical activities with provided equipment and activity options. Teachers will supervise and guide students during the intervention. Students can choose different activities according to their interests and abilities. |
| Control Group | No intervention | –Participants in this group will maintain their usual school recess activities without additional outdoor physical activity intervention. |
Who may qualify
- Ages
- 12 to 15 years
- Sex
- All
- Healthy volunteers
- Accepted
- Age groups
- Child
Key inclusion criteria (4 listed)
- Adolescents aged 12-15 years.
- Students enrolled in the participating schools.
- Physically healthy and able to participate in moderate-to-vigorous physical activity without restrictions.
- Written informed consent obtained from parents or legal guardians.
Key exclusion criteria (3 listed)
- Adolescents with cardiovascular, respiratory, musculoskeletal, or other medical conditions that limit participation in physical activity.
- Adolescents who are unable to participate in moderate-to-vigorous physical activity as confirmed by themselves, their parents, or school health records.
- Adolescents who plan to transfer schools or are unable to complete the intervention and assessments.
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 |
|---|---|---|
| School Recess Outdoor Physical Activity ProgramThe intervention consists of a 10-week outdoor physical activity program implemented during school recess. During each recess period, classroom activities will be suspended and students in the intervention group will participate in outdoor physical activities. Various activity equipment and activity options will be provided, allowing students to select activities according to their interests and abilities. Teachers will supervise and guide students during the activities. Students will return to classrooms after the preparation bell rings. The program aims to increase outdoor activity time during school recess and promote physical and mental health among adolescents. | Behavioural | Outdoor Physical Activity Intervention Group |
Primary outcome
Change in physical activity level assessed by physical activity questionnaire
Time frame: Baseline and 10 weeks after intervention
Physical activity was assessed using the International Physical Activity Questionnaire-Short Form (IPAQ-SF). The questionnaire evaluates vigorous-intensity activity, moderate-intensity activity, walking, and sitting time during the previous 7 days. Physical activity levels were expressed as metabolic equivalent of task minutes per week (MET-min/week), with higher values indicating greater physical activity levels. Sitting time was reported separately as minutes per weekday, with higher values indicating greater sedentary behavior.
Change in mental health status assessed by Chinese Middle School Students Mental Health Scale
Time frame: Baseline and 10 weeks after intervention
Mental health status was assessed using the Mental Health Inventory for Middle School Students in China (MMHI-60) developed by Wang Jisheng. The scale consists of 60 items rated on a 5-point Likert scale. The total score is calculated by summing all item responses, with possible scores ranging from 60 to 300. Higher scores indicate greater mental distress and poorer mental health status.
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 22 Sep 2026.
- Individual participant dataSharing planned: Yes. De-identified individual participant data may be shared with qualified researchers upon reasonable request and after approval by the study investigators and ethics committee.
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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.
The record lists no contact. Use the official record to reach the sponsor.
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A study testing School Recess Outdoor Physical Activity Program in people with Adolescent Health and Physical Activities, run by Kang Zhu at 1 site in China.
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 22 Sep 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 China. 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?
Change in physical activity level assessed by physical activity questionnaire (time frame: Baseline and 10 weeks after intervention). The study lists 2 primary outcomes in all. It is what the study was designed to measure, not a finding.
Where can I read the original study information?
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 22 Sep 2026.