Department of Exercise Science, Columbia, South Carolina; University of South Carolina, Columbia, South Carolina.
Department of Exercise Science, Columbia, South Carolina; University of South Carolina, Columbia, South Carolina.
Am J Prev Med. 2014 Mar;46(3):281-8. doi: 10.1016/j.amepre.2013.10.012.
In 2011, the U.S. Young Men's Christian Association (YMCA) adopted activity standards recommending that afterschool programs (ASPs) ensure all children engage in a minimum of 30 minutes of moderate to vigorous physical activity (MVPA) daily during the ASP. ASPs decide how to accomplish this standard, for which few effective strategies exist.
To evaluate strategies designed to help ASPs meet the MVPA standard.
Single group intervention with pretest and three follow-up measures repeated-cross-sectional design with a subsample cohort.
SETTING/PARTICIPANTS: Four large-scale YMCA ASPs, serving approximately 500 children each day.
Community-based participatory development of strategies focused on modification of program schedules, professional development training, and weekly checklists to evaluate activity opportunities.
Accelerometry-derived MVPA classified as meet or fail-to-meet the 30 minutes' MVPA/day standard collected over a minimum of 4 nonconsecutive days at baseline (fall 2011) and three follow-up assessments (spring 2012, fall 2012, spring 2013). Random intercept logistic regression models evaluated the probability of meeting the standard for boys and girls, separately (analyzed summer 2013).
A total of 895 children (aged 5-12 years, 48.4% girls) representing 3654 daily measures were collected across the four assessments. The percentage of girls and boys meeting the MVPA standard at baseline was 13.3% and 28.0%, respectively. By spring 2013, this increased to 29.3% and 49.6%. These changes represented an increase in the odds of meeting the 30 minutes' MVPA/day standard by 1.5 (95% CI=1.1, 2.0) and 2.4 (95% CI=1.2, 4.8) for girls and boys, respectively.
The strategies developed herein represent an effective approach to enhancing current practice within YMCA ASPs to achieve existing MVPA standards. Additional work is necessary to evaluate the scalability of the strategies in a larger sample of ASPs.
2011 年,美国基督教青年会(YMCA)通过了活动标准,建议课后项目(ASPs)确保所有儿童在 ASP 期间每天至少进行 30 分钟的中等至剧烈强度的身体活动(MVPA)。ASPs 决定如何实现这一标准,但很少有有效的策略。
评估旨在帮助 ASP 达到 MVPA 标准的策略。
单组干预,预测试和三个随访措施重复交叉设计,具有子样本队列。
设置/参与者:四个大型 YMCA ASP,每天为大约 500 名儿童提供服务。
以修改项目时间表、专业发展培训和每周检查表为重点的基于社区的参与式发展,以评估活动机会。
加速度计衍生的 MVPA 分类为满足或未满足每天 30 分钟 MVPA 的标准,在基线(2011 年秋季)和三个随访评估(2012 年春季、2012 年秋季、2013 年春季)期间收集至少 4 天的非连续数据。随机截距逻辑回归模型分别评估男孩和女孩满足标准的概率(分析于 2013 年夏季)。
在四个评估中,共收集了 895 名儿童(年龄 5-12 岁,48.4%为女孩)的 3654 项日常测量数据。基线时女孩和男孩达到 MVPA 标准的百分比分别为 13.3%和 28.0%。到 2013 年春季,这一比例分别增加到 29.3%和 49.6%。这些变化代表女孩和男孩达到每天 30 分钟 MVPA 标准的几率分别增加了 1.5(95%CI=1.1,2.0)和 2.4(95%CI=1.2,4.8)。
本文中开发的策略代表了一种有效方法,可以增强基督教青年会 ASP 内的现有实践,以达到现有的 MVPA 标准。需要进一步的工作来评估这些策略在更大的 ASP 样本中的可扩展性。