1) An obvious physical strength decline was found in the test of grip power, back-muscle strength, and jumping ability in the period of the past 12 years. 2) A distinctive difference was found in the grip power test between the group A and group B, C, D. And in the test of back-muscle strength and jumping ability, a distinctive difference was found between the group A and the group D, and also between the group B and the group D. 3) As for maximum oxygen intake, a distinctive difference was not found in the test. From the result of the test, the decline of the physical strength in the maximum oxygen intake was not found in the 5 year-period.

この論文は国立情報学研究所の電子図書館事業により電子化されました。