Document Detail

Effects of a 200 W-15 min cycling exercise on postural control during quiet standing in healthy young adults.
MedLine Citation:
PMID:  17318648     Owner:  NLM     Status:  MEDLINE    
The purpose of the present experiment was to investigate the immediate effects of a cycling exercise on postural control during quiet standing in healthy young adults. To this aim, 12 university students were asked to stand upright as immobile as possible, with their eyes closed, prior to and following a 15 min cycling exercise performed at a power output of 200 W. Centre of foot pressure (CP) displacements, recorded using a force platform along both the medio-lateral (ML) or antero-posterior (AP) axes, were used to compute the motions of the vertical projection of the centre of gravity (CG(v)) and those of the difference between the CP and the CG(v) (CP - CG(v)). Metabolic (heart rate, respiratory exchange ratio and blood lactate concentration) and psychological (rate of perceived exertion) measurements ensured that subjects were fatigued at the end of the cycling exercise. The cycling exercise induced a decreased of both CG(v) and CP - CG(v) motions along the AP-axis, whereas no significant changes were observed along the ML-axis. These discrepancies of the postural effects according to the direction of balance are likely to stem from the directionally sensitive activity of postural muscles, when considering (1) what the cycling exercise involved in terms of joints and tendons receptors stimulation and lower limb muscles recruitment (i.e. sagittal plane movers of the lower extremities) and (2) the skeletal muscles involved in postural control during quiet standing (i.e. sagittal and frontal plane movers of the lower extremities for the AP and ML balance, respectively).
Nicolas Vuillerme; Frédérique Hintzy
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Publication Detail:
Type:  Controlled Clinical Trial; Journal Article     Date:  2007-02-23
Journal Detail:
Title:  European journal of applied physiology     Volume:  100     ISSN:  1439-6319     ISO Abbreviation:  Eur. J. Appl. Physiol.     Publication Date:  2007 May 
Date Detail:
Created Date:  2007-04-26     Completed Date:  2007-08-30     Revised Date:  2008-11-21    
Medline Journal Info:
Nlm Unique ID:  100954790     Medline TA:  Eur J Appl Physiol     Country:  Germany    
Other Details:
Languages:  eng     Pagination:  169-75     Citation Subset:  IM    
Laboratoire TIMC-IMAG, Faculté de Médecine, UMR CNRS 5525, La Tronche Cédex, 38706, France.
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MeSH Terms
Adaptation, Physiological
Exercise / physiology*
Exercise Test*
Muscle Fatigue / physiology
Postural Balance / physiology
Posture / physiology*
Time Factors

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

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