School of Kinesiology and Health Science, York University, Toronto, Ontario, Canada.
Healthy Active Living and Obesity Research Group, Children's Hospital of Eastern Ontario Research Institute, Ottawa, Ontario, Canada.
Sleep Health. 2017 Jun;3(3):195-203. doi: 10.1016/j.sleh.2017.03.006. Epub 2017 Apr 23.
To identify the sleep duration associated with the lowest cardiometabolic risk score in adults and to determine if the association varies by subgroups (eg, sex, age groups, ethnicity, and smoking status).
Cross-sectional data from the 2005-2012 National Health and Nutrition Examination Survey.
Non-institutionalized civil sample from the United States.
Age ≥20 y (N=8827) with sleep and cardiometabolic health data.
N/A.
Sleep duration from the Sleep Disorders Questionnaire was categorized as ≤3, 4, 5, 6, 7, 8, 9, and ≥10 h per night. HDL cholesterol (HDL) and waist circumference (WC) were stratified by sex first, while fasting insulin, fasting plasma glucose (Glu), triglycerides (TG), body max index (BMI), systolic blood pressure (SBP) and diastolic blood pressure (DBP) were standardized without stratifications. The standardized scores were summed for each participant using the following formula: -zHDL + zInsulin + zGlu + zTG + (zBMI + zWC)/2+(zSBP + zDBP)/2.
Seven hours of sleep was associated with the lowest cardiometabolic risk score (-0.30 (95% CI: -0.43, -0.18)), which remained similar after adjusting for age, sex, ethnicity, education, family income, alcohol intake and smoking status. However, 8 hours of sleep was associated with the lowest score in non-Hispanic Blacks.
This study supports recent sleep duration recommendations in adults, and provides evidence that in general 7 hours of sleep per night is associated with optimal cardiometabolic health of adults. Longitudinal studies using objective measures of sleep would help further clarify this association.
确定与成年人最低心血管代谢风险评分相关的睡眠时长，并确定该关联是否因亚组（如性别、年龄组、种族和吸烟状况）而异。
2005-2012 年全国健康与营养调查的横断面数据。
来自美国的非机构化民间样本。
年龄≥20 岁（N=8827），具有睡眠和心血管代谢健康数据。
无。
使用睡眠障碍问卷将睡眠时长分为≤3、4、5、6、7、8、9 和≥10 小时/每晚。首先按性别分层高密度脂蛋白胆固醇（HDL）和腰围（WC），而空腹胰岛素、空腹血糖（Glu）、甘油三酯（TG）、体重指数（BMI）、收缩压（SBP）和舒张压（DBP）则无需分层进行标准化。使用以下公式为每位参与者标准化得分：-zHDL + zInsulin + zGlu + zTG + (zBMI + zWC)/2+(zSBP + zDBP)/2。
7 小时的睡眠与最低的心血管代谢风险评分相关（-0.30（95%CI：-0.43，-0.18）），在调整年龄、性别、种族、教育、家庭收入、饮酒和吸烟状况后，结果仍然相似。然而，8 小时的睡眠与非西班牙裔黑种人最低评分相关。
本研究支持最近对成年人的睡眠时长建议，并提供了证据表明，一般而言，每晚 7 小时的睡眠与成年人的最佳心血管代谢健康相关。使用客观睡眠测量的纵向研究将有助于进一步阐明这种关联。
