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A study on the development of the new method to evaluate the capacity of physical activity of daily living in the elderly the measurement of walking


, : A study on the development of the new method to evaluate the capacity of physical activity of daily living in the elderly the measurement of walking. Bulletin of the Physical Fitness Research Institute (78): 19-24

In order to evaluate physical activity of daily living in the elderly, we examined the measurements of walking abilities on 40 men and 98 women aged 60-90 yr. The measurements were as follows: (1) Ordinary speed in 10 m walking (OSW), (2) High speed in 10 m walking (HSW), (3) Variance of foot steps during 10 m walking in ordinary speed (VOS), (4) Variance of foot steps during 10 m walking in high speed (VHS), (5) Walking distance for 5 minutes (5 MW), (6) Physiological cost index (PCI) calculated from dividing HR increased during 5 minutes walking by mean walking speed. The results were summarized as follows: (1) Significant correlations were observed between OSW and HSW in male (r = 0.884, P < 0.001) and female (r = 0.883, P < 0.001). OSW and HSW showed the same level of correlation coefficients between first and second measurement on the same object (OSW: r = 0.934, P < 0.001, HSW: r = 0.949, P < 0.001). (2) Significant corrrelations between variance of foot step and cumulated length of central gravity in standing position were observed in both sexes during ordinary speed of walking (male: r=0.515, P < 0.001, female: r = 0.260, P < 0.05), but only in male during high speed of walking (r = 0.380, P < 0.05). These correlation coefficients were higher in ordinary speed than in high speed in both sexes. (3) There was a significant correlation between age and 5 MW in female (r = -0.439, P < 0.001). Walking distance for 5 minutes showed significant positive correlations with OSW and HSW in male (OSW : r = 0.329, P < 0.05, HSW: r = 0.421, P < 0.01) and female (OSW:r = 0.721, P < 0.001, HSW: r = 0.688, P < 0.001). (4) Relationships between age and PCI were not significant in either sex. There was a positive correlation between HR increased during 5 minutes walking and 5 MW in all subjects (r = 0.225, P < 0.05). In conclusion, it seems to suggest that OSW was better than FSW as the variable for the safety in old age. VOS was more useful than VHS as an index for walking stability. Walking distance for 5 minutes and PCI were not necessarily available for index of endurance during walking in old age. Therefore, it was regarded that OSW and VOS were useful as the variable for walking in old age.

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