Modulation of muscle activity and force fluctuations in the plantarflexors after bedrest depends on knee position.

Full Abstract

Force fluctuations in leg muscles increase after bedrest, perhaps due to modulation of the neural strategy that is specific to a muscle or common to agonist muscles. The purpose of this study was to examine the modulation of muscle activity and force fluctuations during steady contractions with variable involvement of plantarflexor muscles after bedrest at knee-flexed (FLX) and extended (EXT) positions. Before and after 20-day bedrest, plantarflexion force and surface electromyogram (EMG) in the medial gastrocnemius (MG), lateral gastrocnemius, and soleus muscles were measured during steady isometric contractions in five young men. In EXT, power

Author information

Author/s: Yoshitake, Yasuhide (Y); Kouzaki, Motoki (M); Fukuoka, Hideoki (H); Fukunaga, Tetsuo (T); Shinohara, Minoru (M);

Affiliation: Department of Health Sciences, Oita University of Nursing and Health Sciences, Oita, Japan.

Grants: NS052480 (Agency:NINDS NIH HHS)

Journal and publication information

Publication Type: Journal Article; Research Support, N.I.H., Extramural; Research Support, Non-U.S. Gov't

Journal: Muscle & nerve (Muscle Nerve), published in United States. (Language: eng)

Reference: 2007-Jun; vol 35 (issue 6) : pp 745-55

Dates: Created 2007/05/24; Completed 2007/07/12; Revised 2007/12/03;

PMID: 17366590, status: MEDLINE (last retrieval date: 2/18/2009, IMS Date: )

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