步骤积累模式和心血管事件的风险和不理想活跃成年人的死亡率
Borja Del Pozo Cruz1, Matthew Ahmadi2, Angelo Sabag3
1Department of Sport Sciences, Faculty of Medicine, Health, and Sports, Villaviciosa de Odón, Madrid, Spain (B.d.P.C.).
Annals of internal medicine
|October 27, 2025
概括
在较长的时间内累积每天的步骤,而不是短暂的爆发,显著降低死亡率和心血管疾病 (CVD) 风险在不理想的活跃成年人. 这一发现凸显了持续体育活动对于更好的健康结果的重要性.
科学领域:
- 心血管健康 心血管健康
- 运动生理学 运动生理学
- 公共卫生 公共卫生
背景情况:
- 目前的体力活动指南往往侧重于每天的步数,但步数积累模式 (短 vs 持续发作) 对不太活跃人群的健康结果的影响尚不清楚.
- 了解不同的身体活动模式如何影响死亡率和心血管疾病 (CVD) 风险对于公共卫生建议至关重要.
研究的目的:
- 研究每天8000步或更少步骤的人群中,步骤积累模式与全因死亡率和心血管疾病 (CVD) 发生的风险之间的关联.
- 为了确定体育活动的持续时间是否会影响心血管健康和亚最佳活跃成年人的整体死亡率.
主要方法:
- 一项前性队列研究利用英国生物库 (2013-2015年) 的数据,其中包括33560名参与者,每天步骤为8000步或更少,没有先前的心血管疾病或癌症.
- 参与者根据他们主要的活动持续时间 (短于5分钟,5到<10分钟,10到<15分钟,或15分钟或更长) 进行分类.
- 使用反向概率加权来平衡不同发作持续时间组的共变量,分析与所有原因死亡率和心血管疾病发病率的关联,平均随访7.9年.
主要成果:
- 在随访期间,随着病发时间的增加,所有原因的累积死亡率和心血管疾病发病率显著下降.
- 与5分钟以下的发作相比,在15分钟或更长时间的发作中积累了大多数步骤的个体的死亡率 (0.80%) 和心血管疾病发病率 (4.39%) 显著降低 (死亡率4.36%,心血管疾病发病率13.03%).
- 在中期的发作持续时间中观察到类似的剂量反应关系,这表明持续活动的益处.
结论:
- 对于低于最佳活动的成年人来说,在较长时间内累积大部分每日步骤,持续的发作与死亡率和心血管疾病 (CVD) 的风险明显降低,而不是在较短时间内累积步骤.
- 这些发现表明,强调活动的持续时间,而不仅仅是总步数,对于改善公共卫生信息传递的健康结果可能很重要.
- 虽然是观察性的,但这项研究为优化心血管健康和寿命的身体活动模式提供了宝贵的见解.
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