欧阳一非, 王志宏, 王惠君, 张兵. 2015年中国十五省老年居民睡眠时间与体脂率的关系[J]. 环境与职业医学, 2019, 36(12): 1113-1118. DOI: 10.13213/j.cnki.jeom.2019.19598
引用本文: 欧阳一非, 王志宏, 王惠君, 张兵. 2015年中国十五省老年居民睡眠时间与体脂率的关系[J]. 环境与职业医学, 2019, 36(12): 1113-1118. DOI: 10.13213/j.cnki.jeom.2019.19598
OUYANG Yi-fei, WANG Zhi-hong, WANG Hui-jun, ZHANG Bing. Relationship between sleep duration and body fat percentage among elderly residents in 15 provinces of China in 2015[J]. Journal of Environmental and Occupational Medicine, 2019, 36(12): 1113-1118. DOI: 10.13213/j.cnki.jeom.2019.19598
Citation: OUYANG Yi-fei, WANG Zhi-hong, WANG Hui-jun, ZHANG Bing. Relationship between sleep duration and body fat percentage among elderly residents in 15 provinces of China in 2015[J]. Journal of Environmental and Occupational Medicine, 2019, 36(12): 1113-1118. DOI: 10.13213/j.cnki.jeom.2019.19598

2015年中国十五省老年居民睡眠时间与体脂率的关系

Relationship between sleep duration and body fat percentage among elderly residents in 15 provinces of China in 2015

  • 摘要: 背景 充足的睡眠是健康生活的前提,睡眠时间不足或过多与老年人健康息息相关。

    目的 分析中国十五省(直辖市、自治区)(后简称:十五省)60岁及以上老年人睡眠时间与体脂率的关系。

    方法 本研究数据来自2015年“中国居民营养状况变迁的队列研究”的调查资料。选取有完整个人基础信息、睡眠时间、膳食数据、身体活动和体脂率数据的60岁及以上老年人作为研究对象,共4 509人。利用“连续3天24小时膳食回顾法”结合称重法收集膳食数据,通过食物成分表,计算每人每天能量摄入量。利用身体活动问卷收集身体活动数据。利用生物电阻抗法收集体成分数据。将睡眠时间分为3组:睡眠不足(< 7 h/d)、睡眠充足(≥7 h/d且 < 9 h/d)和睡眠过多(≥9 h/d)。采用非参数检验分析比较不同性别和年龄人群的睡眠时间差异。应用分位数回归模型分析睡眠时间和体脂率的关系。

    结果 中国十五省60岁及以上老年人每天睡眠时间中位数为8.0 h。睡眠不足的比率为18.4%。睡眠过多的比率为20.3%。不同性别老年人群的睡眠状况差异有统计学意义,男性睡眠不足比率(16.7%)低于女性(19.9%),睡眠充足(62.3%)和睡眠过多(21.0%)的比率高于女性(60.3%和19.7%)。分位数回归分析结果显示,老年男性睡眠时间与不同百分位数体脂率的回归系数均为负值。老年女性睡眠时间与低百分位数体脂率的回归系数是负值,但与高百分位数体脂率的回归系数是正值。但无论男性还是女性,回归系数均没有统计学意义(P>0.05)。

    结论 中国十五省老年人同时存在睡眠时间不足和睡眠过多的状况。老年人睡眠时间对体脂率可能没有影响。

     

    Abstract: Background Adequate sleep duration is vital for a healthy life. Insufficient or excessive sleep duration has been closely linked with elderly health.

    Objective This study is designed to assess the relationship between sleep duration and body fat percentage among the elderly aged 60 years and above from 15 provinces (municipalities, autonomous regions) (hereinafter referred to as 15 provinces) of China in 2015.

    Methods Data were derived from the China Nutritional Transition Cohort Study 2015, where a total of 4 509 participants aged 60 years and above with complete information on demographic characteristics, sleep duration, diet, physical activity, and body fat percentage were included in the final analysis. Detailed dietary intake information was obtained by a combined 3-day 24-hour dietary recall and weighing method. Daily energy intake for each individual was calculated by an established food composition table. Physical activity data were collected by relevant questionnaire survey. Body composition was measured by bioelectric impedance analysis. Sleep duration was divided into three groups: < 7h/d (insufficient sleeping), 7-9h (sufficient sleeping), and ≥ 9h (excessive sleeping). Non-parametric test was used to compare the differences in sleep duration among different gender and age groups. Quantile regression analyses were used to investigate the relationship between sleep duration and body fat percentage.

    Results The median of daily sleep duration was 8.0 h of the elderly residents aged 60 years and above in the 15 provinces of China. The proportion of insufficient sleeping was 18.4%. The proportion of excessive sleeping was 20.3%. Significant gender differences were found in sleep duration. The proportion of insufficient sleeping was lower in males (16.7%) than in females (19.9%). The proportions of sufficient and excessive sleeping were higher in males (62.3% and 21.0%) than in females (60.3% and 19.7%). The coefficients estimated by quantile regression analyses were negative between sleep duration and body fat percentage in all percentiles for elderly males and between sleep duration and body fat percentage in low percentiles for elderly females, and were positive between sleep duration and body fat percentage in high percentiles for elderly females. All the quantile regression coefficients were not statistically significant (P>0.05).

    Conclusion Both insufficient and excessive sleep duration are found among Chinese seniors in the 15 provinces of China. The effect of sleep duration on body fat percentage is probably insignificant.

     

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