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  • Title: Physical activity level in healthy free-living Japanese estimated by doubly labelled water method and International Physical Activity Questionnaire.
    Author: Ishikawa-Takata K, Tabata I, Sasaki S, Rafamantanantsoa HH, Okazaki H, Okubo H, Tanaka S, Yamamoto S, Shirota T, Uchida K, Murata M.
    Journal: Eur J Clin Nutr; 2008 Jul; 62(7):885-91. PubMed ID: 17522602.
    Abstract:
    OBJECTIVE: To measure total energy expenditure (TEE) for normal healthy Japanese by the doubly labelled water (DLW), and to compare the physical activity level (PAL) among categories classified by the categories used in daily reference intake (DRI), Japan and the International Physical Activity Questionnaire (IPAQ). SUBJECTS AND METHODS: A total of 150 healthy Japanese men and women aged 20- to 59-year-old living in four districts of Japan. TEE was measured by the DLW method, and the PAL was calculated from TEE divided by basal metabolic rate. Simultaneously with TEE measurement, the PAL was assessed employing the categories used in DRI, Japan and IPAQ. RESULTS: The average TEE and PAL were 10.78+/-1.67 MJ/day and 1.72+/-0.22 for males and 8.37+/-1.30 MJ/day and 1.72+/-0.27 for females, respectively. The subjects in the highly active categories assessed by both DRI and IPAQ showed significantly higher PAL compared with less active categories. However, PALs among light and moderate categories by DRI, and insufficient and sufficiently active by IPAQ were not significantly different. CONCLUSIONS: In developed countries, highly active subjects could be assessed by a simple questionnaire. However, the questionnaire should be improved to clarify the sedentary to moderately active subjects by assessing carefully very light to moderate physical activity.
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