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저체중 노인의 추정 심폐체력과 모든 원인 사망과의 연관성
이인환 ( Inhwan Lee ),김병로 ( Byungroh Kim ) 한국운동생리학회(구 한국운동과학회) 2020 운동과학 Vol.29 No.2
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<.001) for Q3, and 0.248 (95% CI, 0.155-0.397, 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.