Abstract
Junior high school age, that has been established as compulsory, is one of the most important stage in life, not only from the view point of the mental development, but of the physical growth and the development of exercise-capacity.
As the materials for this study I used the records of 50 metre run, broad jump, basket ball throw, vertical jump and suspension involved in the exercise-capacity test program conducted with about 300 boys of a junior high school in Shibuya-ku in July, 1950.
And I examined (1) the correlation in running, jumping and throwing, (2) the comparison of the capacity of sports dud-boys with that of ordinary boys, (3) the correlation of the capacity by the age, (4) the difference in their exercise-capacity by school years, (5) the development of such capacity and (6) the correlation of such capacities with the stature, weight and lower limb length.
