评估基于运动的体育教育对儿童活动行为的有效性:一项随机对照试验
Aliye B Cepni1, David W Walsh1, Hanjoe Kim2
1Department of Health and Human Performance, University of Houston, Houston, TX, USA.
Journal of physical activity & health
|November 19, 2024
概括
一项以运动为基础的体育教育 (PE) 干预措施有效地减少了来自低收入家庭的儿童,特别是女孩的周末久坐行为. 这一包容性计划有望在服务不足的年轻人中促进更健康的活动习惯.
科学领域:
- 儿童体育活动与公共卫生
- 在学校环境中进行行为干预.
- 少数民族儿童的健康差异
背景情况:
- 来自低收入和少数民族背景的儿童表现出较高的身体不活动和久坐行为率.
- 解决这些差异对于长期儿童健康结果至关重要.
- 现有的体育教育 (PE) 计划可能无法充分服务于高风险人群.
研究的目的:
- 评估一个包容性的体育技能发展体育教育 (PE) 干预.
- 增加中度至剧烈的体力活动 (MVPA) 并减少高风险儿童的久坐行为.
- 评估干预对服务不足的小学人口活动行为的影响.
主要方法:
- 从休斯顿德克萨斯州服务不足社区的3所公立学校招募小学龄儿童.
- 随机分配的教室要么是基于体育的PE干预 (n=124) 或标准PE (对照,n=133) 10周.
- 在基线和干预后使用加速计 (ActiGraph GT3X +) 评估活动行为;用多层线性混合效应模型分析.
主要成果:
- 干预组在周末的久坐行为显著下降 (32分钟的差异与对照组相比,P=.012).
- 干预组的女孩特别减少了周末的久坐行为37分钟,而对照组的女孩增加了8分钟 (P<.01).
- 虽然趋势有利于对MVPA和总体/周日久坐行为进行干预,但没有达到统计学意义.
结论:
- 基于体育的体育教育干预可以有效地减少儿童的久坐行为,特别是在学校以外的时间.
- 该干预措施对减少女孩周末静坐时间产生了显著的积极影响.
- 这一战略有可能改善服务不足人群,特别是女孩的活动模式.
相关概念视频
What is an Experiment?
An experiment is a planned activity carried out under controlled conditions. The purpose of an experiment is to investigate the relationship between two variables. When one variable causes change in another, we call the first variable the explanatory or independent variable. The affected variable is called the response or dependent variable. In a randomized experiment, the researcher manipulates values of the explanatory variable and measures the resulting changes in the response variable. The...
Randomized Experiments
The randomization process involves assigning study participants randomly to experimental or control groups based on their probability of being equally assigned. Randomization is meant to eliminate selection bias and balance known and unknown confounding factors so that the control group is similar to the treatment group as much as possible. A computer program and a random number generator can be used to assign participants to groups in a way that minimizes bias.
Simple randomization
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Simple randomization
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