title: Effects of muscle relaxation on sustained contraction of ipsilateral remote muscle.
abstract: The objective of this study was to clarify the temporal change of muscle activity during relaxation of ipsilateral remote muscles. While participants maintained a constant right wrist extensor isometric force, they dorsiflexed the ipsilateral ankle from resting position or relaxed from dorsiflexed position in response to an audio signal. The wrist extensor force magnitude increased in the 0-400 msec period after the onset of foot contraction compared to that of the resting condition (P < 0.05). On the other hand, wrist extensor force magnitude and electromyographic (EMG) activity decreased in the 0-400 msec period after the onset of ankle dorsiflexion compared to that of the resting condition (P < 0.05). Our findings suggest that foot muscle relaxation induces temporal reduction in hand muscle EMG activity and force magnitude.
authors.affiliation: Faculty of Sport Sciences, Waseda University, Tokorozawa, Japan Japan Society for the Promotion of Science, Chiyoda-ku, Japan kouki0104@gmail.com.
authors.forename: Kouki
authors.initials: K
authors.lastname: Kato
authors.affiliation: Faculty of Sport Sciences, Waseda University, Tokorozawa, Japan.
authors.forename: Tasuku
authors.initials: T
authors.lastname: Watanabe
authors.affiliation: Faculty of Sport Sciences, Waseda University, Tokorozawa, Japan.
authors.forename: Kazuyuki
authors.initials: K
authors.lastname: Kanosue
keywords: Coordination; inhibition; multilimb movements