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Modulation of muscle activity and force fluctuations in the plantarflexors after bedrest depends on knee position
Yasuhide Yoshitake1, Motoki Kouzaki, Hideoki Fukuoka
1Department of Health Sciences, Oita University of Nursing and Health Sciences, Oita, Japan.
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
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