二重標識水法を用いた簡易エネルギー消費量推定法の評価 : 生活時間調査法, 心拍数法, 加速度計法について

概要

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The purpose of this study was to examine total energy expenditure (TEE) in Japanese men under free-living conditions using various field methods, and compare these methods with the doubly labeled water method (DLW). Ten Japanese men, aged 24.2±1.8(mean±SD)yrs, were studied for 14 consecutive days. TEE was assessed by DLW, activity record method (AR ; using relative metabolic rate and calculated basal metabolic rate), heart rate monitoring methods (Two-line and FLEX-HR methods), and accelerometer method (AC). Energy intake (EI) was also evaluated over the same period. Although TEE estimated by AR (2730±139 kcal・day^<-1>), Two-line (2925±433 kcal・day^<-1>), and FLEX-HR (2949±506 kcal・day^<-1>) did not differ significantly from the TEE determined by DLW (2910±524 kcal・day^<-1>), there was no significant relationship between each of these methods and DLW. In addition, EI (2963±482 kcal・day^<-1>) and TEE determined by DLW were similar, and there was a significant correlation (r=0.809,P<0.01). Compared with DLW, AC (2697±541 kcal・day^<-1>) underestimated TEE at the group level ; however, AC was the only method to show a significant correlation with DLW (r=0.871,P<0.001). Therefore, it seems possible that AC would accurately estimate TEE at the individual level by improving both the instrument and its methodology.
2002-02-01