1060 EFFECT OF AGE ON THE ASSOCIATION BETWEEN SUBJECTIVE SLEEP QUALITY AND METABOLIC SYNDROME

Abstract

Introduction: Many previous studies have reported that self-reported global sleep quality and sleep duration are significantly related to the metabolic syndrome (MetS). However, it is no clear how chronological age affects the association between sleep quality and MetS and thus the aim of this study is to investigate age effect on this relationship. Methods: The cross-section baseline data of adult men and women (n=22,995, 23-79yr) were collected from health check-up study, including Pittsburgh Sleep Quality Index (PSQI) with concurrently collected components of MetS. Results: Poor sleep quality (PSQI≥6) and shorter sleep duration showed significant association in people with MetS than those without (20.9% vs 19.0%, p=0.004) after adjusting for age, smoking, alcohol, sex, and exercise. To better clarify the age effect, we classified them by the median age 40 y. Among the older (> 40 y), global PSQI score was significantly higher (p=0.002) and sleep duration was shorter (p=0.007) in subjects with MetS compared to in those without MetS. However, this patterns was not found for younger adults in this sample. Conclusion: The current study showed the effect of age on a relationship between subjective sleep quality and MetS. It suggests that satisfactory sleep in older adults (>40 y) may play a crucial role in the prevention of MetS.