Abstract
The present study was undertaken for the purpose of clarifying the difference of motor abilities between right-leg and left-leg in jumping exercise. The number of the subjects were forty technical college students, and they were all healthy ordinary males. Following results were obtained from the study. (1) Generally speaking, it is well known that the right and left difference of motor abilities on leg is small in comparison with arm, which was confirmed also in this study. But as to the moderately well trained group in jumping exercise, statistically significant difference were observed in many factors. Table 1,2 shows the results. (2) Difference of jumping motor abilities between right and left on leg in running vertical jump, long jump, and triple jump were larger than that of vertical jump, standing long jump, and standing triple jump both right dominant and left dominant jumper. (3) The selection of dominant leg in general jumping exercise decide by not only partial leg motor abilities, but with all one's motor abilities inclusive of dominant arm.
