心拍数によるエネルギ-消費量の推定に関する研究-3-老人の生活活動量

概要

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Methods used for estimating physical activity measurement are suitable exclusively for adults. They are difficult to apply for the aged. The objective of this study is to assess actual condition of the daily energy expenditure (EE) and daily activity factor (DAF:EE/ basal metabolic rate -1) of the aged using heart rate (HR). Subjects used were 42 aged people: 17 men and 25 women, 35 from nursing home and 7 from their home, aged from 70.0 to 88.4 years old. Basal metabolic rate (BMR) was measured actually and EE was estimated by HR- oxygen consumption (VO2) method based on the two experimental active and non-active conditions formulas, between HR and VO2. Results obtained are as follows: 1. Mean BMRs measured in men and women were 20.5 kcal/kg and 19.8 kcal/kg, respectively. Mean EEs were 1590 ± 272 kcal/d and 1360 ± 264 kcal/d and mean EEs adjusted for weight were 27.4 ± 5.0 kcal/kg and 27.1 ± 5.4 kcal/kg in men and women, respectively. 2. Mean DAFs estimating from BMR and EE were 0.32 ± 0.22 for men, 0.33 ± 0.23 for women and 0.33 ± 0.23 on average. 3. Significant correlation (p<0.05) was obtained between DAF and the distance of measured BMR from standard BMR shown in the Recommended Dietary Allowances for the Japanese. The results obtained suggest that more physical activity is needed for these subjects, and BMR of active aged people was higher than that of the less.
日本民族衛生学会の論文