The sample of 243 K.M.A. cadets has been selected one year before the admission of the K.M.A. and has been studied for five years. One-way ANOVA and Trend Analysis have been applied to this longitudinal data set and the outcome may be subsumed as follows; 1. For 100m running, sargent-jump. the differences among groups except 4. 5year are statisitically significant(P<0.05). For the trend analysis of 100m running and sargent-jump. linear and cubic trends appeared(P<0.001). 2. For 2㎞ running. there are statistically significant differences among groups(except 3. 5year). while the trend analysis showed linear, quadratic. and cubic trends(P<0.001). 3. For pull-up, all gorups are statistically different except 1. 2year. while the trend analysis showed linear. quadratic, and cubic trends(P<0.05. P<0.001).