H-reflexes are smaller in dancers from The Royal Danish Ballet than in well-trained athletes期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

H-reflexes are smaller in dancers from The Royal Danish Ballet than in well-trained athletes

Authors:	J. Nielsen C. Crone H. Hultborn

Affiliation:	(1) Department of Neurophysiology, The Panum Institute, University of Copenhagen, Blegdamsvej 3, DK-2200 Copenhagen N, Denmark;(2) Present address: Department of Clinical Neurophysiology, Rigshospitalet, University of Copenhagen, DK-2100 Copenhagen Ø, Denmark

Abstract:	Summary The size of the maximalH-reflex (H_max) was measured at rest and expressed as a percentage of the maximalM-response (M_max) in 17 untrained subjects, 27 moderately trained subjects, 19 well-trained subjects and 7 dancers from the Royal Danish Ballet. TheH_max/M_max was significantly larger in the moderately and well-trained subjects than in the untrained subjects but smaller in the ballet dancers. It is therefore suggested that both the amount and the type of habitual activity may influence the excitability of spinal reflexes.

Keywords:	Ballet dancers H-reflexes Ia afferents Reciprocal inhibition Reflex pathways Spinal cord Training
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