School of Public Administration and Policy, Renmin University, Beijing 100872, China.
Department of Research Programs, Fort Belvoir Community Hospital, Fort Belvoir, VA 22060, USA.
Nutrients. 2020 May 22;12(5):1510. doi: 10.3390/nu12051510.
Complex processes appear to link sleep duration and quality with dietary patterns. Numerous studies show healthful benefits of the Dietary Approaches to Stop Hypertension (DASH) diet, but few have examined its association with sleep duration or quality. The current study tested cross-sectional associations of DASH diet quality score with sleep quality among adults. Analyses of participants were from the 2005-2008 wave of the National Health and Nutrition Examination Surveys (n = 3941 adults ≥ 30 years of age, complete data). We performed sex- and age group-stratified multiple OLS regression analyses with DASH total score and components as main predictors and sleep quality as main outcomes, adjusting sequentially for socio-demographic, behavioral and health-related factors. Sex and age differences in associations of DASH with sleep quality, adjusting for covariates, were also examined by incorporating two-way interaction terms between sex/age and the DASH score in each unstratified model. We found that the DASH diet score was inversely related to poor sleep-related daytime dysfunction adjusted by age, sex, demographic and socio-economic factors. Some sex-specific associations were detected between DASH diet component scores and sleep quality. Notably, the potassium DASH component was inversely associated with Factor 1 ("sleepiness and sleep disturbance") among women. The fiber DASH component was associated with better sleep quality and inversely related to Factor 2 ("sleep-related daytime dysfunction") in younger subjects. This study indicates health benefits of the DASH diet for sleep duration and quality. Future longitudinal studies and randomized placebo-controlled trials are required to ascertain protective effects.
复杂的过程似乎将睡眠时长和质量与饮食模式联系起来。大量研究表明，停止高血压的饮食方法（DASH）饮食有益于健康，但很少有研究检查其与睡眠时长或质量的关系。本研究检验了 DASH 饮食质量评分与成年人睡眠质量之间的横断面关联。对来自 2005-2008 年全国健康和营养调查（n = 3941 名年龄≥30 岁的成年人，完整数据）的参与者进行了分析。我们进行了性别和年龄组分层的多元 OLS 回归分析，以 DASH 总分和各成分作为主要预测因子，以睡眠质量作为主要结果，依次调整社会人口统计学、行为和健康相关因素。还通过在每个非分层模型中纳入性别/年龄与 DASH 评分之间的双向交互项，检查了 DASH 与睡眠质量之间的关联在性别和年龄方面的差异，调整了协变量。我们发现，在调整年龄、性别、人口统计学和社会经济因素后，DASH 饮食评分与睡眠相关的日间功能障碍较差呈负相关。在 DASH 饮食成分评分与睡眠质量之间检测到一些特定于性别的关联。值得注意的是，钾 DASH 成分与女性的因子 1（“嗜睡和睡眠障碍”）呈负相关。纤维 DASH 成分与睡眠质量呈正相关，与年轻受试者的因子 2（“与睡眠相关的日间功能障碍”）呈负相关。本研究表明 DASH 饮食对睡眠时长和质量有益。需要进行未来的纵向研究和随机安慰剂对照试验以确定保护作用。
