Document Detail


Muscular efficiency during arm cranking and wheelchair exercise: a comparison.
MedLine Citation:
PMID:  12215959     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The present study was performed to compare various individual muscular efficiency indices, i. e., gross (GE), net (NE), work (WE), and delta (DE), during arm cranking ergometer (ACE) and wheelchair ergometer (WERG) exercise at the same relative exercise intensities. Following a maximal test on both the ACE and WERG, 15 able-bodied subjects completed 4 submaximal bouts at 0, 40, 55 and 70 % of the mode-specific VO(2) peak. The peak power output and VO(2) values were significantly higher with ACE than WERG maximal exercise. As a consequence, the power output imposed during WERG submaximal bouts was significantly lower compared to ACE submaximal bouts. ACE exercise was found to elicit a significantly higher (p < 0.001) VO(2) (16 to 28 vs 14 to 23 ml x min(-1) x kg(-1)), GE (9 to 11 vs 6 to 9 %) and NE (14 to 13 vs 10 to 11 %) compared to WERG exercise at power output from 40 to 70 % VO(2) peak, respectively. However, WE (17 to 15 vs 17 to 14 % at 40 to 55 % VO(2)peak) and DE (12 to 13 vs 12 to 12 % at Delta 40 - 55 % to Delta 55 - 70 % VO(2) peak) values were similar between ACE and WERG exercise. The lower GE and NE observed during WERG compared to ACE exercise could be explained by the biomechanical disadvantages of the hand-rim WERG pattern movement. These findings also supported that the different indices of efficiency influenced the interpretation of the comparison between ACE and WERG propulsion.
Authors:
F Hintzy; N Tordi; S Perrey
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Publication Detail:
Type:  Comparative Study; Journal Article    
Journal Detail:
Title:  International journal of sports medicine     Volume:  23     ISSN:  0172-4622     ISO Abbreviation:  Int J Sports Med     Publication Date:  2002 Aug 
Date Detail:
Created Date:  2002-09-06     Completed Date:  2003-02-20     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  8008349     Medline TA:  Int J Sports Med     Country:  Germany    
Other Details:
Languages:  eng     Pagination:  408-14     Citation Subset:  IM    
Affiliation:
Laboratoire de Modélisation des Activités Sportives (LMAS), Le Bourget du lac, France. Frederique.Hintzy@univ-savoie.fr
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MeSH Terms
Descriptor/Qualifier:
Adult
Arm*
Exercise / physiology*
Exercise Test
Humans
Male
Muscle, Skeletal / physiology*
Oxygen Consumption
Wheelchairs*

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


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