Association of sleep quality with physical performance among Korean aging people

Abstract

Background.– The elderly population is currently increasing. Subjective and objective measures of sleep demonstrate an increase in sleep and wake disturbances with advancing age. The purpose of this study is to evaluate the correlation between the duration and quality of sleep with physical performance. Methods.– The Short Physical Performance Battery(SPPB) and sleep questionnaire (sleep quality and sleep quantity were included) were performed on random sample nested in the Korean Longitudinal Study of Ageing (KLoSA) panel. The associations of sleep duration and quality with SPPB were examined using logistic regression analysis. In both cases depression was stratified. Results.– A total of 402 subjects aged over than 45years who performed sleep questionnaire and SPPB in the KLoSA was included. Inmultivariable-adjustedmodels, therewere associationsbetween better subjective sleep quality andnormal SPPB (P=0.04) in female. Compared to fair sleep group, well sleep group was more likely to have abnormal SPPB (adjusted odds ratio [aOR] =0.46, 95% confidence interval [CI] = 0.22–0.95) in female. Sleep quality shows significantly positive association with normal SPPB score. But the relationship between sleep duration and normal SPPB score was not significant. Conclusion.– In our study, the better sleep quality is associatedwith thebetterphysical function (higherSPPBscore) inagingpopulation, especially in female group.