目的 探讨中国中老年广场舞人群膳食钙摄入与睡眠质量之间的关联。方法 本研究的数据来自调查“中国广场舞人群生活方式与健康老龄化队列研究”,通过半定量食物频率问卷（semi-quantitative food frequency questionnaire, SFFQ）收集膳食数据,并结合中国食物成分表标准版（第6版）计算膳食钙的摄入量;采用匹兹堡睡眠质量指数（Pittsburgh sleep quality index, PSQI）量表评估研究对象最近一个月的睡眠状况,PSQI得分>5的研究对象被归类为睡眠质量差。t检验、卡方检验用于比较不同睡眠质量人群基本情况的差异分析,采用Logistic回归分析计算比值比（odds ratio, OR）及95%置信区间（confidence interval, CI）,探讨膳食钙摄入量与睡眠质量之间的关联。结果 纳入2427名中老年人,平均年龄为(62.15±6.14)岁。1656名（68.23%）为睡眠质量好,771名（31.77%）为睡眠质量差,平均膳食钙摄入量前者为643.49 mg/d,后者为594.78 mg/d,睡眠质量好比睡眠质量差的对象膳食钙平均摄入量高出48.71 mg（8.19%）;多重Logistic回归分析显示,调整混杂因素后,与膳食钙摄入量最低组（第1五分位）相比,摄入量最高组（第5五分位）的研究对象睡眠质量更好（OR=0.59, 95% CI: 0.45,0.79）;进一步分析显示,与膳食钙摄入量最低组（第1五分位）相比,最高组（第5五分位）的膳食钙摄入量对于主观睡眠质量（OR=0.70, 95% CI: 0.52, 0.94）、睡眠潜伏期（OR=0.63, 95% CI: 0.48,0.82）、睡眠时长（OR=0.52, 95% CI: 0.40, 0.68）、睡眠效率（OR=0.53, 95% CI: 0.41, 0.69）具有更强的保护效应。结论 我国中老年人较高的膳食钙摄入量与更好的睡眠质量之间显著相关。
Abstract
Objective To learn the association between dietary calcium intake and sleep quality among middle-aged and elderly square dancers in China. Method The data of the study were from the cohort study on lifestyle and healthy aging of Chinese square dancers. Dietary information was collected by semi-quantitative food frequency questionnaire (SFFQ), and dietary calcium intake was calculated according to the Chinese Food. Composition Tables (6th edition). The Pittsburgh sleep quality index was used to estimate the sleep status during the past month. The PSQI score >5 were defined as poor sleep quality. The t-test and Chi square test were used to compare the differences in basic information among subjects with different sleep qualities. Logistic regression analysis was used to calculate the odds ratio (OR) and 95% confidence interval (CI) to explore the association between dietary calcium intake and sleep quality. Results A total of 2427 middle-aged and elderly individuals were included, with an average age of (62.15±6.14) years. About 1656 (68.23%) had good sleep quality, while 771 (31.77%) had poor sleep quality. The average dietary calcium intake of the former was 643.49 mg/d, while that of the latter was 594.78 mg/d. The average dietary calcium intake of the subjects with good sleep quality was 8.19% higher than that of those with poor sleep quality. Multiple logistic regression analysis showed that compared with the group with the lowest dietary calcium intake (1st quintile), the group with the highest intake (5th quintile) had better sleep quality (OR=0.59, 95% CI: 0.45,0.79), after adjusting for confounding factors. Further analyses showed that compared to the group with the lowest dietary calcium intake (1st quintile), the highest group (5th quintile) had a stronger protective effect of dietary calcium intake on subjective sleep quality (OR=0.70, 95% CI: 0.52, 0.94), sleep latency (OR=0.63, 95% CI: 0.48, 0.82), sleep duration (OR=0.52, 95% CI. 0.40, 0.68), and sleep efficiency (OR=0.53, 95% CI: 0.41, 0.69). Conclusion There is a significant correlation between higher dietary calcium intake and better sleep quality among middle-aged and elderly people in China.
关键词
膳食钙摄入量 /
睡眠质量 /
中老年人
Key words
dietary calcium intake /
sleep quality /
middle-aged and elderly people
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基金
中国营养学会营养健康研究院广场舞队列基金（北京中营惠营养健康研究院）
