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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 metabo lic 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 •Eday-1), Two-line (2925 •}433 kcal •Eday-1), and FLEX-HR (2949•}506 kcal•Eday-1) did not differ significantly from the TEE determined by DLW (2910•}524 kcal•Eday-1), there was no significant relationship between each of these methods and DLW. In addition, El (2963•}482 kcal•Eday-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•Eday-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. (Jpn. J. Phys. Fitness Sports Med. 2002, 51 : 151•`164) key word : energy expenditure, physical activity, time study, doubly labeled water, energy intake 1)筑波大学大学院 体育科学研究科 〒305-8574茨 城県つ くば市天王台1-1-1 2)東京大学大学院博士課程 総合文化研究科広域科学専攻生命環境科学系 〒153-8902東 京都 目黒 区駒場8-3-1 3)福岡大学 スポーツ科学部 運動生理学研究室 〒814-0133福 岡県福 岡市城南区七隈8-19-1 4)独立行政法 人 国立健康 ・栄養研究所 人間栄養学研究系栄養所要量研究部 〒162-8636東 京都新宿 区戸山1-23-1 5)鹿屋体育大学 体育学部 生涯スポーツ 学講座 〒891-2393鹿 児島県鹿屋市 白水町1番 地 6)筑波大学 体育科学系 〒305-8574茨 城県つ くば市天王台1-1-1 7) School of Dietetics and Human N utrition, McGill University•§ H9X3V9 Ste-Anne-de Bellevue, Montreal, Quebec, CANADA Doctoral Program in Health and Sport Sciences, University of Tsukuba Laboratory for Sports Sciences, Department of Life Sciences, University of Tokyo Department of Health and Sports Science, Fukuoka University Laboratory of Mineral Nutrition, Division of Human Nutrition, Department of Human Nutrition and Health Promotion, National Institute of Health and Nutrition Department for Interdisciplinary studies of Lifelong Sport and Physical Activity, National Institute of Fitness and Sports in Kanoya Institute of Health and Sport Sciences, University of Tsukuba School of Dietetics and Human Nutrition, McGill University 152 海 老 根,島 田,田 中,西 牟 田,吉 武,齊 藤,JONES

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COMPARATIVE STUDY OF TOTAL ENERGY EXPENDITURE IN JAPANESE MEN USING DOUBLY LABELED WATER METHOD AGAINST ACTIVITY RECORD, HEART RATE MONITORING, AND ACCELEROMETER METHODS