著者

大橋 千里 金子 龍一

出版者

富山高等専門学校

雑誌

富山商船高等専門学校研究集録 (ISSN:03878996)

巻号頁・発行日

vol.42, pp.145-149, 2009-08

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The purpose of this study is to investigate the effects of daily physical activity on the endurance ability and the obesity index in a boy with down's syndrome. We examined the subject's obesity index and he was mildly obese(Rohrer-index:161.4, body fat:24.8%). The amount of daily physical activity and its intensity(light,moderate and vigorous) was estimated by a pedometer(Lifecorder) two times during the school term and during the summer vacation. There were significant differences between the school term period and the summer vacation period in steps/day(9347±1561 vs 7086±2517, p<0.001), light activity(min/day)(70.7±10.3 vs 52.6±13.0 p<0.001)and vigorous activity(min/day)(6.4±2.9 vs 2.7±1.6 p<0.001). There was no significant difference in moderate activity(min/day). We conducted walking tests before and after the summer vacation to examine the walking speed at a heart rate of 132 beats/min(aerobics with smile), which we used as the index of endurance ability. His walking speed changeed from 80.8m/min(pre-summer vacation) to 56.1m/min(post-summer vacation) showing a decline in endurance ability. This suggests that the decrease in daily physical activity during summer vacation influenced the decline in endurance ability of the subject.