Abstract Summary
The purpose of this study was to clarify the BLD of spring-like behaviour in hopping at various frequencies and the effect of chronic adaptation via sprint running experience on BLD during the hopping. Fifteen male experienced sprinters and 12 male novices participated in this study. Participants were instructed to hop barefoot with hands on hips, bilaterally and with right and left legs unilaterally. They were instructed to hop in time to a metronome set at the frequencies 2.0, 2.5, and 3.0 Hz and without the metronome, at maximal effort. Our results demonstrate that neuromuscular inhibition in contralateral legs changes during the hopping based on hopping frequency; and BLD of spring-like behaviour was not observed during the hopping in experienced sprinters even though the unilateral leg stiffness of sprinters was greater compared to that of novices.
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