《A Study on the Effects of Increasing Outdoor Activity Time During School Recess on the Physical and Mental Health of Adolescents》
Trial Snapshot
- Phase
- Not Applicable
- Status
- Completed
- Sponsor
- Enrollment
- 200
- Locations
- 1
- Primary Endpoint
- Change in physical activity level assessed by physical activity questionnaire
Study Overview
Brief 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. 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
- Study Type
- Interventional
- Allocation
- Randomized
- Intervention Model
- Parallel
- Primary Purpose
- Prevention
- Masking
- None
Eligibility Criteria
- Ages
- 12 Years to 15 Years (Child)
- Sex
- All
- Accepts Healthy Volunteers
- Yes
Inclusion Criteria
- •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.
Exclusion Criteria
- •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.
Arms & Interventions
Outdoor Physical Activity Intervention Group
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.
Intervention: School Recess Outdoor Physical Activity Program (Behavioral)
Control Group
Participants in this group will maintain their usual school recess activities without additional outdoor physical activity intervention.
Outcomes
Primary Outcomes
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.
Secondary Outcomes
No secondary outcomes reported
Investigators
Kang Zhu
Graduate Student
Shanghai University of Sport