Chasens Eileen R, Sereika Susan M, Weaver Terri E, Umlauf Mary Grace
School of Nursing, University of Pittsburgh, Pittsburgh, PA 15261, USA.
J Sleep Res. 2007 Mar;16(1):60-5. doi: 10.1111/j.1365-2869.2007.00576.x.
The purpose of this study was to describe the association between sleepiness, exercise, and physical function in older adults, testing the hypothesis that sleepiness predicts decreased exercise and impaired physical function in this population. We performed a secondary analysis of data from the National Sleep Foundation's Sleep in America Poll, comparing frequency of exercise and ability to perform functional tasks between sleepy and non-sleepy subjects. Trained interviewers administered a scripted telephone survey. Participants (n = 1506) were community-dwelling older Americans (55-84 years) randomly chosen from geographically representative households with listed telephone numbers. Sleepiness 'so severe that it interferes with daytime activity' was dichotomized as 'daily/frequently' or 'never/rare'. Exercise frequency was scored 1-4 ('less than once a week' to 'more than five times a week'). Responses to five questions (walk 0.5 mile, climb stairs, push/pull heavy object, stoop/crouch/or kneel, write, handle small objects), rated 1-5 ('no difficulty' to 'unable to do'), were summed; a mean score of > or = 2.5 was considered impaired physical function. Daytime sleepiness predicted low exercise frequency while controlling for age and body mass index (BMI) (OR = 1.40, 95% CI 1.031-1.897, P = 0.031). Frequent daytime sleepiness predicted impaired physical function (OR = 2.76, 95%CI = 0.237-0.553, P = 0.001) after controlling for age, BMI, income and number of co-morbid conditions. The conclusion was that daytime sleepiness in older adults is associated with physical functional impairments and decreased exercise frequency. The findings suggest that sleepiness in older adults is not benign but has implications for continued physical decline and warrants attention.
本研究的目的是描述老年人嗜睡、运动和身体功能之间的关联，检验嗜睡会导致该人群运动减少和身体功能受损这一假设。我们对美国国家睡眠基金会“美国睡眠民意调查”的数据进行了二次分析，比较嗜睡和不嗜睡受试者的运动频率及执行功能性任务的能力。经过培训的访员进行了脚本化电话调查。参与者（n = 1506）是从具有地理代表性且有登记电话号码的家庭中随机选取的居住在社区的美国老年人（55 - 84岁）。“严重到干扰白天活动”的嗜睡情况被分为“每天/经常”或“从不/很少”。运动频率按1 - 4分计分（“每周少于一次”到“每周超过五次”）。对五个问题（步行0.5英里、爬楼梯、推/拉重物、弯腰/蹲伏/跪、写字、处理小物件）的回答按1 - 5分评级（“无困难”到“无法完成”），将得分相加；平均得分≥2.5被视为身体功能受损。在控制年龄和体重指数（BMI）后，白天嗜睡预示着运动频率较低（OR = 1.40，95%CI 1.031 - 1.897，P = 0.031）。在控制年龄、BMI、收入和共病数量后，频繁的白天嗜睡预示着身体功能受损（OR = 2.76，95%CI = 0.237 - 0.553，P = 0.001）。结论是老年人的白天嗜睡与身体功能损害和运动频率降低有关。研究结果表明，老年人的嗜睡并非无害，而是与身体持续衰退有关，值得关注。
