Open AccessAssociation between Estimated Cardiorespiratory Fitness and All-cause Mortality in Underweight Older Adults
Author(s) -
Inhwan Lee,
Byungroh Kim
Publication year - 2020
Publication title -
undong gwahag
Language(s) - English
Resource type - Journals
ISSN - 1226-1726
DOI - 10.15857/es.2020.29.2.146
Subject(s) - cardiorespiratory fitness , hazard ratio , underweight , medicine , confidence interval , proportional hazards model , demography , lower risk , gerontology , body mass index , overweight , sociology
PURPOSE: This study investigated the association between estimated cardiorespiratory fitness (eCRF) and all-cause mortality in underweight older adults.METHODS: Data from the 2006 Korean longitudinal study of aging (KLoSA) involving 348 study participants aged 60 years and older (58.0% women) was analyzed in this study. CRF was estimated with sex- and age-specific algorithms developed by the fitness registry and the importance of exercise national database (FRIEND). Participants were classified into lowest 25% (Q1), lower 25% (Q2), middle 25% (Q3), and highest 25% (Q4) on the basis of individual eCRF distributions. Cox proportional hazards regression was used to calculate hazard ratio (HR) and 95% confidence interval (CI) according to eCRF levels.RESULTS: During 7.8±3.2-year follow-up period, a total of 175 deaths occurred from all causes. Cox regression analysis showed that HR of all-cause mortality was 0.686 (95% CI, 0.474-0.991, p =.045) for Q2, 0.382 (95% CI, 0.253-0.575, p p <.001) for Q4 compared to Q1 as reference (HR=1). The HR of Q4 for all-cause mortality remained significant even after adjustments for covariates, including age and marital status.CONCLUSIONS: The current findings suggest that high eCRF is associated with a decreased risk of all-cause mortality in underweight older adults.