2022 Volume 67 Pages 577-589
The rhythm adjustment ability of elementary school students was evaluated quantitatively with reference to the structure of movements in the long jump. The items analyzed included a 20-m run, two 20-m runs over mini hurdles placed at different intervals, a standing broad jump, and a long jump. Coefficients of correlation between the RA ratio (Rhythm Adjustment ability) for the 20-m mini hurdle and 20-m run and other measured items were calculated, in addition the effect of the RA ratio on the long jump. The results showed that RA ratio is important for the long jump distance, and that the long jump distance was significantly influenced by speed (20-m run), leg power (standing broad jump) and RA ratio. It was also shown that the contribution of RA ratio was equivalent to the contribution of speed, and higher than the contribution of leg power. These results suggest that the RA ratio is valid for evaluation of the rhythm adjustment ability.
