Effect of physical activity on QOL improvement in consideration of differences of physical activity program types

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The purpose of this study was to examine association of physical activity programs to improvement of health related QOL. Fifty-four middle-aged and elderly people participated in the study. Before and after 11-week physical activity programs, health related QOL and physical fitness of the participants were measured. Association of physical activity programs to improvement of health related QOL were examined by comparing a model that physical activity programs improve health related QOL directly (model 1) with other model that the programs improve health related QOL through physical fitness improvement. A result of analyses revealed that the model 1 showed better the fit of successive models than the model 2. In addition, there was no significant effect of physical fitness improvement on improvement of health related QOL in the model 2. Therefore, these results show that participation to the physical activity program directly improves health related QOL.