Document Detail


Anaerobic power of the arms and legs of young and older men.
MedLine Citation:
PMID:  10362857     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The purpose of this study was to examine differences in the anaerobic exercise performance of young and older men. Eight healthy, active older (68.5 +/- 2.4 years old, mean S.D.) and eight healthy, active young (30.6 +/- 4.5 years old) subjects were assessed for peak and mean power output (PP and MP, respectively) of the legs and arms, during 30 s Wingate tests. PP during leg exercise was significantly (P < 0.05) higher in the young (14.6 +/- 1.6 W kg-1) compared with the older (10.7 +/- 1.0 W kg-1) group. MP of the legs was also greater in the young subjects (10.7 +/- 0.7 vs. 7.4 +/- 0.9 W kg-1). These differences in PP and MP remained significant when expressed relative to lean leg volume. PP during arm cranking was significantly greater in the young subjects (8.9 +/- 0.7 vs. 7.5 +/- 0.6 W kg-1) as was MP (6.4 +/- 0.7 vs. 5.0 +/- 0.7 W kg-1). Post-exercise blood lactate concentration in the older group (7.0 +/- 1.6 mmol l-1) was less (P < 0.05) than in the young group (10.6 +/- 2.0 mmol l-1), for leg work only. The significant loss of anaerobic power in the older group could not be explained by a difference in muscle mass. Power output was also lower in the arms, but to a lesser extent. The results of this study suggest that a reduction in the ability to perform high intensity exercise may be an inevitable consequence of ageing. The extent, however, of this decline varies with different muscle groups.
Authors:
G D Marsh; D H Paterson; D Govindasamy; D A Cunningham
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Publication Detail:
Type:  Comparative Study; Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Experimental physiology     Volume:  84     ISSN:  0958-0670     ISO Abbreviation:  Exp. Physiol.     Publication Date:  1999 May 
Date Detail:
Created Date:  1999-07-12     Completed Date:  1999-07-12     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  9002940     Medline TA:  Exp Physiol     Country:  ENGLAND    
Other Details:
Languages:  eng     Pagination:  589-97     Citation Subset:  IM    
Affiliation:
Division of Imaging, and Division of Activity and Ageing, The Lawson Research Institute, St Joseph's Health Centre, London, Ontario, Canada.gdmarsh@julian.uwo.ca
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MeSH Terms
Descriptor/Qualifier:
Adult
Aged
Aging / physiology*
Anaerobiosis
Arm
Exercise / physiology*
Exercise Test
Humans
Leg
Male
Muscle Contraction / physiology

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


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