Document Detail


Training-specific adaptations of H- and stretch reflexes in human soleus muscle.
MedLine Citation:
PMID:  17251172     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The authors investigated the effect of physical exercise on reflex excitability in a controlled intervention study. Healthy participants (N = 21) performed 4 weeks of either power training (ballistic strength training) or balance training (sensorimotor training [SMT]). Both training regimens enhanced balance control and rate of force development, whereas reductions in peak-to-peak amplitudes of stretch reflexes and in the ratio of the maximum Hoffman reflex to the maximum efferent motor response (Hmax:Mmax) measured at rest were limited to SMT. The differences in reflex excitability between the training regimens indicated different underlying neural mechanisms of adaptation. The reduced reflex excitability following SMT was most likely induced by supraspinal influence. The authors discuss an overall increase in presynaptic inhibition of Ia afferent fibers as a possible mechanism.
Authors:
M Gruber; W Taube; A Gollhofer; S Beck; F Amtage; M Schubert
Publication Detail:
Type:  Journal Article; Randomized Controlled Trial; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Journal of motor behavior     Volume:  39     ISSN:  0022-2895     ISO Abbreviation:  J Mot Behav     Publication Date:  2007 Jan 
Date Detail:
Created Date:  2007-01-25     Completed Date:  2007-03-01     Revised Date:  2008-11-21    
Medline Journal Info:
Nlm Unique ID:  0236512     Medline TA:  J Mot Behav     Country:  United States    
Other Details:
Languages:  eng     Pagination:  68-78     Citation Subset:  IM    
Affiliation:
University of Freiburg, Department of Sport Science, Schwarzwaldstrasse 175, 79117 Freiburg i Br, Germany. markus.gruber@sport.uni-freiburg.de
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MeSH Terms
Descriptor/Qualifier:
Adaptation, Physiological
Adult
Electromyography
Exercise / physiology*
Female
H-Reflex / physiology*
Humans
Male
Muscle, Skeletal / innervation,  physiology*
Neuronal Plasticity / physiology
Postural Balance / physiology
Practice (Psychology)*
Reflex, Stretch / physiology*
Statistics, Nonparametric

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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