Relationship between ground contact time in sprinting, jumping events and jump tests

Abstract

　The present study aimed to determine the relationship between ground contact time during sprinting and long jumping, and during jumping tests such as the RJ and RDJ. The main findings of this study are as follows:

(1) Significant positive correlations were found between ground contact times in RJ and RDJ for all jumping tests, for both double- and single-leg conditions.

(2) No significant correlations were observed between ground contact time during sprinting and during any of the jumping tests. Similarly, no significant correlations were found between ground contact time in the long jump and in any of the jumping tests.

　These results suggest that the relationship between ground contact time in jumping tests such as RJ and RDJ, and in actual performances such as sprinting and the long jump, is weak. They also suggest that, while intra-individual ground contact time characteristics may be similar between simple jumping exercises, they are not between sprinting and jumping events and jump tests.