Article

This study aimed to investigate attentional demand during single-leg landing
after a jump. The experiment was set up as dual-task test. Twelve healthy male
participants were instructed to make a two-leg jump with right-leg landing as
softly as possible. The flight time of the jump was set to 300ms through
sufficient practice. As a cognitive task, the participants were asked to push the
right or left custom-made button as soon as a go-signal was presented. The timing
when the go-signal presented varied from 0 to 300ms from the take-off. Catch
trials in which the go-signal was not presented were randomly inserted. The
results showed that the maximum vertical ground reaction force after touchdown
was greater under the dual-task condition than in the single-task condition.
Increase in the maximum vertical ground reaction force was consistent regardless
of the timing of presenting the go-signal, and the same effect was observed in
the catch trials. These results indicate that the effect of dual tasking was
caused by attentional allocation to the choice reaction time task. Athletes may
be exposed a large ground reaction forces during landing while performing
cognitive tasks.
CI - Copyright (c) 2011 Elsevier B.V. All rights reserved.

Langue : ANGLAIS