Sleep duration and all-cause mortality: links to physical activity and prefrailty in a 27-year follow up of older adults in the UK

摘要

Objectives: To assess sleep duration-mortality relationships across a 27-year follow-up period in a well characterized random sample of older people, and to test the hypothesis that mortality risks associated with long sleep duration confound with, and can be explained by, low levels of functional capacity indicative of frailty.