小学年龄儿童加速仪的差异 - 在学校和夏天之间测量体力活动:夏季观察队列研究的What's UP (破坏预防) 的三年研究结果
Michael W Beets1, Sarah Burkart2, Christopher Pfledderer3
1Arnold School of Public Health, University of South Carolina, Columbia, SC, USA. beets@mailbox.sc.edu.
概括
儿童在暑假期间不太活跃,更久坐,可能会增加BMI. 这些运动行为差异因性别,年龄和收入而异,突出了复杂的影响因素.
科学领域:
- 儿科健康 儿科健康
- 行为科学 行为科学
- 公共卫生 公共卫生
背景情况:
- 夏季假期与小学年龄儿童的身体质量指数 (BMI) 加速增长有关.
- 夏季减少体力活动 (PA) 是BMI增加的一个关键驱动因素.
- 现有的研究表明,夏季与学年相比,PA下降,但人口统计数据的一致性尚不清楚.
研究的目的:
- 在一个多元化的儿童群体中,检查学校与夏季运动行为之间的差异.
- 调查这些差异如何根据性别,年龄和社会经济地位在三年内变化.
主要方法:
- 1203名儿童 (5-14岁) 在三年 (2021-2023) 期间在学校和夏季穿着加速度计14天.
- 混合效应模型分析了中度至强度体力活动 (MVPA) 和久坐时间的变化.
- 分析按性别,年龄组 (5-9岁和10-14岁) 和收入水平 (低,中,高) 分层.
主要成果:
- 儿童在学校期间积累的MVPA比夏天更多 (男孩:每天+9.1分钟,女孩:每天+6.2分钟).
- 男孩在学校期间的久坐时间较少,而女孩没有显著差异.
- 学校和夏天之间的MVPA差异通常会随着年龄的增长而扩大,在不同年龄和收入群体中,久坐时间模式的显著差异.
结论:
- 与学年相比,儿童在夏季表现出减少的体力活动和增加的久坐行为,这可能有助于BMI加速.
- 这些运动行为差异不均,受到生物性别,年龄和家庭收入的影响.
- 了解这些复杂因素对于制定有针对性的干预措施来减轻与夏季相关的健康风险至关重要.
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