老年人的加速度计测量体力活动量与睡眠时间之间的关联:可解释的横截面机器学习分析
XiaoTao Cai1, Yi Xian2, YuXin Zhou3
1Institute of Physical Education, Sichuan University, Chengdu, China.
Frontiers in public health
|September 5, 2025
概括
身体活动量对老年人的睡眠时间有积极影响,最佳效益在7,000-15,000MIMS之间. 为了更好的睡眠,建议每天保持至少12000次MIMS.
科学领域:
- 老年学
- 睡眠科学
- 运动生理学
背景情况:
- 睡眠时间对老年人的健康和福祉至关重要.
- 了解身体活动与睡眠之间的关系对于公共卫生干预至关重要.
- 客观监测提供了关于体力活动量的准确数据.
研究的目的:
- 研究身体活动量对老年人睡眠时间的非线性关联和值效应.
- 确定改善睡眠时间的关键身体活动值.
- 为针对老年人睡眠的运动计划提供基于证据的建议.
主要方法:
- 使用两波NHANES (国家健康和营养检查调查) 数据 (2011-2014年和2005-2006年) 进行导出和验证队列.
- 使用加权单变量分析,多变量逻辑回归和可解释的机器学习 (GBDT,RF,XGBoost,LightGBM,堆叠组合).
- 进行了SHAP (SHapley添加式解释) 分析,以确定模型的可解释性和值效应.
主要成果:
- 身体活动量与良好的睡眠时间的概率之间存在正相关性.
- 渐变增强决策树 (GBDT) 模型显示出优异的性能 (AUC=0. 859内部,0. 707外部).
- 身体活动量显示非线性效应,关键值约为11,461MIMS;最佳范围在7,000-15,000MIMS之间.
结论:
- 身体活动是改善老年人睡眠时间的一种有前途的非侵入性干预措施.
- 运动计划应考虑体力活动量的关键值和区域效应.
- 建议每日活动水平至少为12,000MIMS,其中15,000MIMS是最佳水平,同时指出过度运动的风险.
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