英国生物库加速器测量体力活动的剂量反应,步数和癌症风险:前性队列分析
Alaina H Shreves1, Scott R Small2, Ruth C Travis3
1Nuffield Department of Population Health, University of Oxford, Oxford, UK; Big Data Institute, Li Ka Shing Centre for Health Information and Discovery, University of Oxford, Oxford, UK; Division of Cancer Epidemiology and Genetics, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA.
Lancet (London, England)
|November 24, 2023
概括
较高的体力活动和每日步数与成人癌症风险降低有关. 增加活动,即使是低强度,也可能是降低癌症风险的实际公共卫生策略.
科学领域:
- 流行病学
- 公共卫生
- 老年学
背景情况:
- 癌症与衰老有很强的联系.
- 身体活动等可改变的生活方式可能会影响癌症的风险.
- 在老年人中,步数与癌症风险之间的关系需要进一步研究.
研究的目的:
- 研究加速度计测量总体体力活动,步数和癌症风险之间的关联.
- 研究不同体力活动强度之间重新分配时间对癌症风险的影响.
- 评估身体活动指标与癌症风险之间的剂量反应关系.
主要方法:
- 使用英国生物库数据的前性队列研究 (n=86,556).
- 收集了7天的加速计数据 (Axivity AX3),以测量总活动和步数.
- 用于计算13种癌症复合终点的危险比率的Cox比例危险模型,经过多重共变量调整.
主要成果:
- 较高的总体体育活动与较低的体育活动相关癌症风险相关 (HR/ 1 SD: 0. 85).
- 每天重新分配30分钟到中度至强度活动或1小时到轻度活动与癌症风险降低有关.
- 与每天步行5000步相比,每天步行1万步显著降低了癌症风险 (HR:0.81).
结论:
- 增加总体体育活动和每日步数与体育活动相关的癌症风险降低有关.
- 无论强度如何,转向体育活动似乎对预防癌症有好处.
- 促进增加低强度活动和增加每日步数可以作为有效的公共卫生干预措施.
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