老年人的日常活动能耗和死亡率
Todd M Manini1, James E Everhart, Kushang V Patel
1National Institute on Aging, Laboratory of Epidemiology, Demography and Biometry, Bethesda, Md 20892, USA. maninit@mail.nih.gov
JAMA
|July 13, 2006
概括
通过日常活动消耗更多的能量与老年人死亡风险降低有关. 较高的自由生活活动能耗显著降低了死亡的可能性,无论结构化的运动.
科学领域:
- 老年学是指老年学的学科.
- 公共卫生 公共卫生
- 代谢科学 代谢科学
背景情况:
- 众所周知,参与运动可以降低死亡率.
- 然而,在自由生活环境中,一般日常能源消耗对生存的益处不太清楚.
- 研究非运动活动热生成 (NEAT) 对于理解整体健康结果至关重要.
研究的目的:
- 调查自由生活活动能源消耗与老年人全因死亡率之间的关联.
- 为了确定仅仅通过任何活动消耗能量是否会赋予生存优势.
主要方法:
- 302名健康的老年人 (70-82岁) 在2周内使用双标签水测量了他们的总能耗.
- 自由生活活动的能量消耗是通过从总能量消耗中减去休息代谢率和饭菜的热效应来计算的.
- 参与者被跟踪了平均6.15年,以追踪所有原因的死亡率.
主要成果:
- 较高的每日自由生活活动能耗与所有原因死亡风险明显降低有关.
- 能源消耗最高三分之一的人与最低三分之一的人相比,死亡风险降低了69% (HR,0.31).
- 在调整了各种健康和生活方式因素后,这种关联仍然很重要.
结论:
- 客观地衡量自由生活活动的能源消耗是健康老年人降低死亡风险的强有力的预测指标.
- 研究结果表明,日常活动中任何形式的能源消耗都可能有助于增加寿命.
- 除了结构化的运动之外,促进一般体育活动可能是老年人群的关键公共卫生战略.
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