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首页> 美国卫生研究院文献>International Journal of Environmental Research and Public Health >Impact on Physical Fitness of the Chinese CHAMPS: A Clustered Randomized Controlled Trial
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Impact on Physical Fitness of the Chinese CHAMPS: A Clustered Randomized Controlled Trial

机译：对中国冠军运动员身体素质的影响：一项随机对照试验

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Background: School physical activity (PA) policy, physical education curriculum, teacher training, knowledge of physical fitness, and parental support are among the key issues underlying the declining trend of physical fitness in children and adolescents. The Chinese CHAMPS was a multi-faceted intervention program to maximize the opportunities for moderate and vigorous physical activity (MVPA), and increase physical fitness in middle school students. The purpose of the study was to test whether the levels of modification in school physical education policy and curriculum incrementally influenced the changes in cardiorespiratory fitness and other physical fitness outcomes. Methods: This 8-month study was a clustered randomized controlled trial using a 2 × 2 factorial design. The participants were 680 7th grade students (mean age = 12.66 years) enrolled in 12 middle schools that were randomly assigned to one of four treatment conditions: school physical education intervention (SPE), afterschool program intervention (ASP), SPE+ASP, and control. Targeted behaviors of the Chinese CHAMPS were the student’s sedentary behavior and MVPA. The study outcomes were assessed by a test battery of physical fitness at the baseline and posttest. Sedentary behavior and MVPA were measured in randomly selected students using observations and accelerometry. Results: The terms contrasting the pooled effect of SPE, ASP, and SPE+ASP vs. Control, the pooled effect of SPE and SPE+ASP vs. ASP only, and the effect of SPE+ASP vs. ASP on CRF and other physical fitness outcomes were all significant after adjusting for covariates, supporting the study hypothesis. Process evaluation demonstrated high fidelity of the intervention in the targeted students’ behaviors. Conclusions: Chinese CHAMPS demonstrated the impact of varying the amount of MVPA and vigorous physical activity (VPA) on the physical fitness in middle school students in support of the need to increase the opportunity for PA in schools and to introduce high-intensity exercises in school-based PA programs. Modification of school policy, quality of physical education curriculum, and teacher training were important moderators of the improvement in physical fitness. (Trial registration: ChiCTR-IOR-14005388, the Childhood Health; Activity and Motor Performance Study).
机译：背景：学校体育活动（PA）政策，体育课程，教师培训，体育锻炼知识和父母支持是儿童和青少年体育锻炼下降趋势的关键问题。中国CHAMPS是一个多方面的干预计划，旨在最大程度地增加中等强度和剧烈运动的机会，并提高中学生的身体素质。这项研究的目的是检验学校体育政策和课程的修改水平是否逐步影响了心肺适应性和其他身体适应性结果的变化。方法：这项为期8个月的研究是一项采用2×2因子设计的聚类随机对照试验。参与者为680名7年级学生（平均年龄= 12.66岁），他们入选了12所中学，这些学生被随机分配为以下四种治疗条件之一：学校体育干预（SPE），课外活动干预（ASP），SPE + ASP和控制。中文CHAMPS的针对性行为是学生的久坐行为和MVPA。在基线和后测时通过一系列身体健康测试来评估研究结果。静坐行为和MVPA是通过观察和加速度计对随机选择的学生进行测量的。结果：这些术语对比了SPE，ASP和SPE + ASP与对照组的汇总效果，SPE和SPE + ASP与仅ASP的汇总效果以及SPE + ASP与ASP的对比对CRF和其他物理效果的影响校正协变量后，健康结局均很显着，支持了研究假设。过程评估表明对目标学生行为的干预具有很高的保真度。结论：中国CHAMPS证明了变化的MVPA量和剧烈的体育锻炼（VPA）对中学生的身体健康的影响，以支持增加学校PA机会并在学校进行高强度锻炼的需求基于PA的程序。修改学校政策，体育课程的质量和师资培训是改善体质的重要主持人。 （试验注册：ChiCTR-IOR-14005388，儿童健康；活动和运动表现研究）。

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