신체활동이 평형전략점수의 개인차에 미치는 영향 = Effects of physical activity on individual differences of balance strategy score

다국어 초록 (Multilingual Abstract)

Effects of physical activity on individual differences of balance strategy score. Exercise Science, 8(3): 345-360, 1999. Aging is a highly personal process, with individuals not only being different from each other but also having physiological systems that age at different rates. The magnitude of Individual differences varies with the attribute or function being measured. Considering that individual differences exist among the elderly, it is no wondering that chronological age is such a poor predictor of function for an individual. Reaction time, measured in cross-sectional studies, also increases in individual differences as age increases. So the comparison of difference among people by the scores about the mean has a great limitation. In the present study, one hundred and seventy six healthy subjects between the ages of 30 and 70 years volunteered(82 regular exercised and 94 sedentary men) to explore individual differences. The balance strategy tests were performed using the dynamic posturography. Computerized dynamic posturography measures the timing and magnitude of surface forces produced in response to perturbations of the support surface and visual surround. This allows measurement of a subjects ability to utilize vestibuar, visual, and somatosensory inputs in the coordination of motor responses that are appropriate to external conditions. On the bass of the present results, I have drawn the following conclusions 1) During conditions using somatosensory Input inaccurate, individual differences is extraordinarily increased in the seventy decade participated physical activity. 2) On inaccurate visual and somalosersory inputs conditions, individual differences was pronounced at the ages of 60 years. The control In the seventy decade, especially, had a higher individual differences than the other group. 3) Individual differences were influenced by physical activity on inaccurate visual and somatosensory inputs conditions.