高齢者における全身持久性評価法の検討 : 400m歩行テストの有効性

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Few studies have evaluated physical endurance as measured by a walking performance test. We investigated a 400-m walking test which indirectly assesses physical endurance in older people. In Study I, fifty-three healthy subjects aged 67.8±0.7 years performed and incremental treadmill walking test, and a 400-m walking test. The RPE 11(fairly light)level by the Borg scale was regarded as the exercise intensity during the 400-m walking test. Mean value of pred.VO_2max and VO_2@VT were 25.8ml/kg/min and 14.4ml/kg/min(56.5%pred.VO_2max), respectively. There were significant correlations between the performance time in the 400-m walking test and pred.VO_2max(r=-0.654:p<0.001)and VO_2@VT(r=-0.685:p<0.001). There was also a significant correlation between pred.VO_2max and VO_2@VT(r=0.732:p<0.001). The respiro-circulatory responses during the 400-m walking test were 60% VO_2max and 55%HRreserve. These values were within the exercise tolerance capacity and safety range of the subjects. There was a significant correlation(r=0.784, p<0.001)in the reliability between the 1st and 2nd walking times in the 400-m walking test. In Study II, the 400-m walking time significantly increased with age. The walking times were grades are : I, Very good(under 250 sec); II, Good(250-270 sec); III, Fair(271-300 sec); IV, Poor(over 301 sec). The fast walking subjects(levels I, II and III)had a significantly high TMIG index. These results suggest that the 400-m walking test is useful for assessing physical endurance, and reflects the performance capacity of daily life in older persons.
日本運動生理学会の論文
1999-07-30

高齢者における全身持久性評価法の検討 : 400m歩行テストの有効性

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