Document Detail

Cross-sectional investigation of indices of isokinetic leg strength in youth soccer players and untrained individuals.
MedLine Citation:
PMID:  18627555     Owner:  NLM     Status:  MEDLINE    
In this cross-sectional study, the differences in the isokinetic peak torque of the knee joint muscles (dominant and non-dominant) were investigated in three groups of youths (n=45; age, 14.9+/-1.1 years) with different soccer training backgrounds. Significant main effects were observed for training background on the functional hamstrings to quadriceps ratios for knee flexion (H(CON):Q(ECC) ratio; F(2,42)=4.023, P=0.025) and extension (H(ECC):Q(CON) ratio; F(2,42)=8.53, P<0.001) at 4.32 rad/s. Post hoc tests indicated that both ratios were significantly different between conventionally trained players compared with resistance-trained players and controls (mean+/-SD; H(ECC):Q(CON) ratio, dominant limb; 0.91+/-0.10; 1.04+/-0.12; 1.10+/-0.22; non-dominant limb; 0.89+/-0.09; 1.05+/-0.19; 1.06+/-0.15; H(CON):Q(ECC) ratio, dominant limb; 0.36+/-0.06; 0.34+/-0.07; 0.30+/-0.08; non-dominant limb; 0.33+/-0.05; 0.32+/-0.08; 0.28+/-0.07). Results suggest that the muscle-loading patterns experienced in youth soccer may alter the reciprocal balance of strength about the knee under high-velocity conditions. The findings also indicate that these balances may be improved by incorporating resistance training into the habitual exercise routines of youth soccer players.
J Iga; K George; A Lees; T Reilly
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Publication Detail:
Type:  Comparative Study; Journal Article     Date:  2008-07-10
Journal Detail:
Title:  Scandinavian journal of medicine & science in sports     Volume:  19     ISSN:  1600-0838     ISO Abbreviation:  Scand J Med Sci Sports     Publication Date:  2009 Oct 
Date Detail:
Created Date:  2009-10-02     Completed Date:  2010-01-15     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9111504     Medline TA:  Scand J Med Sci Sports     Country:  Denmark    
Other Details:
Languages:  eng     Pagination:  714-9     Citation Subset:  IM    
Faculty of Sport, Health and Social Care, University of Gloucestershire, Gloucestershire, UK.
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MeSH Terms
Athletic Performance*
Biomechanics / physiology
Cross-Sectional Studies
Great Britain
Muscle Strength / physiology*
Resistance Training

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