Physical Activity and Sleep Time Per Day of Junior High School Students in Ho Chi Minh City and the Effectiveness of Interventions to Increase Physical Activity and Sleep Time
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 入组人数
- 948
- 试验地点
- 2
- 主要终点
- Average Daily MVPA and TST
研究概览
简要总结
The study comprises 2 phases. Phase 1: Cross-sectional study investigated the duration of moderate to vigorous physical activity (MVPA) time and the total of sleep time (TST), describing and identifying factors related to duration of MVPA time and TST. Phase 2: Conduct an intervention to evaluate the effectiveness and factors related to physical activity and sleep time average day of secondary school students in Ho Chi Minh City.
详细描述
Detailed of 2 phases in this study below:
Phase 1: Cross - sectional study
A cross-sectional study was conducted in 12 schools, with 2 classes selected from each school (one from grades 6-7 and one from grades 8-9). The study included a total of 948 participants with complete data for analysis (achieving the minimum sample size of 942 students). At this phase, objectives were: 1) To determine the average daily duration of MVPA and TST. 2) To investigate the association between MVPA and TST and various factors (student, family, and environmental). The sequence of activities was as follows:
- Research team contacted the school administration to send research questionnaires and informed consent forms to students and parents of the selected classes.
- On the survey day, researchers collected consent forms and instructed students to complete a self-management questionnaire about personal characteristics, family background, physical activity environment, and sleep habits. Afterwards, researchers guided consenting students in wearing Actigraph GT9X accelerometers, providing them with log sheets to record daily wear times.
- After 7 consecutive days of accelerometer wear, the research team returns to the schools to collect the devices from the school health offices. Data from the accelerometers were included in the analysis only if students have worn the device for at least four days, including at least one weekend day.
- Student physical activity and sleep data extracted using ActiLife software. The extracted parameters included: time spent in moderate-intensity physical activity (MPA), vigorous-intensity physical activity (VPA), moderate-to-vigorous physical activity (MVPA), total sleep time (TST), sleep efficiency (SE), wake after sleep onset (WASO), time in bed (TIB), and number of days with accelerometer wear.
- Following data extraction and accelerometer recalibration, the research team continues to conduct surveys at the remaining schools as planned until the target sample size is reached.
- Upon completion of data collection, data from all 12 schools is consolidated into a unified dataset. Response rates are calculated, and data cleaning is conducted. Subsequently, data analysis is performed to meet the objectives of Phase 1.
Phase 2: Interventional study
研究设计
- 研究类型
- Interventional
- 分配方式
- Randomized
- 干预模型
- Parallel
- 主要目的
- Prevention
- 盲法
- None
入排标准
- 年龄范围
- 11 Years 至 16 Years（Child）
- 性别
- All
- 接受健康志愿者
- 是
入选标准
- •For school: All public secondary schools located in the district of Ho Chi Minh city.
- •For student: Students (aged 10 - 16) attending grades 6, 7, 8, and 9 in public secondary schools located in the districts of Ho Chi Minh City.
排除标准
- •For school: All public secondary schools located in the district of Ho Chi Minh city. do not cooperate in the research.
- •For student: Students or parents of students do not agreement to participate in the study.
结局指标
主要结局
Average Daily MVPA and TST
时间窗: From enrollment to the end of intervention at 6 months
Student MVPA calculations: * Accelerometer data was collected to measure students's physical activity. This data was processed using ActiLife software to classify different intensity levels of activity. Subsequently, the time spent in MVPA was analysised. Variables extracted alongside included MPA, VPA. * Average daily MVPA was calculated by average of weekdays (5 days) and weekend days (2 days). Unit of MVPA was minutes per day per student. The calculated results were analyzed using cluster analysis, considering the weight of each student in different clusters. Student TST calculations: Just as MVPA was calculated, sleep data was obtained from accelerometer readings and processed using ActiLife. TST was calculated and adjusted to reflect the full week distribution. Other variables such as TIB, WASO, and SE were also extracted from the dataset. TST is measured in hours per day per student. The calculated results are analyzed using cluster analysis, taking into account the weight.
Changes in MVPA and TST at 1 month and 6 months follow-ups between intervention and control groups
时间窗: From enrollment to the end of intervention at 6 months
* After 1 month and 6 month of intervention, the study reassessed students' MVPA and TST using accelerometers and extracted similar information as described in Outcome 1. Paired t-tests were used to compare the intervention and cross-sectional phases to examine the pre-post intervention differences in the intervention group (similarly for the control group). * The differences in MVPA and TST between the two groups were compared at 1-month and 6-month follow-ups. It was hypothesized that after 1 month, the intervention group would show an increase in MVPA and TST compared to the cross-sectional phase, while the control group would show no change compared to the baseline. After 6 months of intervention, the intervention group would still show an increase in MVPA and TST compared to the cross-sectional phase, but the increase would be less significant than the 1-month assessment, while the control group would show no change compared to the baseline.
次要结局
- Associations of MVPA and TST with factor groups derived from questionnaire responses(From enrollment to the end of intervention at 6 months)
研究者
Hong Tang
Vice Dean of the Faculty of Public Health
Pham Ngoc Thach University of Medicine