Further evaluation of physical fitness age versus physiological age in women |
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Authors: | Eitaro Nakamura Toshio Moritani and Akio Kanetaka |
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Institution: | (1) Department of Life Sciences, Faculty of Integrated Human Studies, Kyoto University, Sakyo-ku, Kyoto 606-01, Japan, JP;(2) Laboratory of Applied Physiology, Graduate School of Human and Environmental Studies, Kyoto University, Sakyo-ku, Kyoto 606-01, Japan, JP;(3) Kanetaka Medical Clinic Centre, Kusatu, Siga 525, Japan, JP |
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Abstract: | The present study was conducted to examine further whether adult women who are in a state of high physical fitness possess
high physiological functions, and also to investigate whether those who exercise regularly are able to maintain a high quality
of various physiological functions. The subjects of this study were 249 healthy Japanese adult women (aged 20–70 years). Of
these subjects 30 had jogged or walked regularly for more than 3 years. The physiological ages (PA) and physical fitness ages
(FA) of the individuals were estimated from 17 physiological function tests and 5 physical fitness tests, respectively, by
principal components analyses. The results indicated that there was a significant correlation between PA and FA (r = 0.76, P < 0.01). To examine this relationship in more detail, the subjects were classified into three physical fitness groups (high,
normal and low) based on the deviation from the regression line of FA. Comparison of the mean PA among three physical fitness
groups revealed that the high physical fitness groups demonstrated a much lower PA (physiologically younger), while the low
physical fitness groups showed a relatively higher PA (physiologically older) in spite of their equivalent chronological ages.
From this series of studies, a new concept is proposed where different individuals have different peak physiological capacities,
but that these capacities change with age at similar rates. It is suggested that interventions such as exercise and a proper
diet for promoting health could increase peak functional capacity but have little effect on the rate of decline.
Accepted: 3 March 1998 |
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Keywords: | Exercise Physiological age Physical fitness age Women Principal component model |
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