3軸加速度計を用いて評価した日常生活の活動強度と体重減少の関連性

概要

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We investigated the relationship between body weight reduction and intensity of daily physical activities assessed with 3-dimensional accelerometer during a 3-month exercise program. Twenty-six middle-aged women (58.1±7.4yrs.) participated in this study. Participants underwent a 90-min endurance exercise intervention once a week, and a 3-dimensionsal accelerometer was attached through the program. Body weight (BW), body mass index, fat mass and percent body fat were reduced significantly (p<0.001), while diastolic blood pressure (p<0.01) and shuttle stamina walking test (p<0.05) improved significantly after the exercise intervention. Moreover, a significant negative correlation was observed between the changes in BW and total activity time (TAT) per day of more than 3METs (TAT≧3METs)(r=-0.580, p<0.01) and TAT≧4METs (r=-0.627, p<0.001). To the contrary, the daily steps and the TAT≧2METs were not related to the changes in BW. After adjusting daily steps, TAT≧3METs (β=-0.630, p<0.01) and TAT≧4METs (β=-0.659, p<0.01) were still significantly related to the changes in BW. These results indicate that weight reduction has a much closer relationship with exercise intensity than daily steps. It is important to keep both quantity and intensity of exercise in the unsupervised exercise program aimed at weight reduction.
日本体力医学会の論文
2006-08-01