Document Detail

Power output in vertical jumps: does optimum loading depend on activity profiles?
MedLine Citation:
PMID:  22864398     Owner:  NLM     Status:  MEDLINE    
The previously proposed maximum dynamic output hypothesis (MDO: i.e. the optimum load for maximizing the power output during jumping is one's own body) was tested on individuals of various activity profiles. Forty males (10 strength-trained athletes, 10 speed-trained athletes, 10 physically active non-athletes, and 10 sedentary individuals) performed different vertical jumps on a force plate while a pulley system was used to either reduce or increase the subject's body weight by 10-30 %. As expected, an increase in external loading resulted in a significant increase (p < 0.001) in force output and a concomitant decrease of peak jumping velocity in all groups of participants. The main finding, however, was that all groups revealed the maximum peak and mean power output at approximately the subjects' own body weight although their weight represented prominently different percentage of their maximum dynamic strength. While a significant (p < 0.05), albeit moderate, 'group × load' interaction in one jump was observed for the peak power output, the individual optimum load for maximizing the power output number did not differ among the groups. Although apparently further research on various types of movements is needed, the present results provide, so far, the strongest support of the MDO hypothesis.
Nemanja Pazin; Bobana Berjan; Aleksandar Nedeljkovic; Goran Markovic; Slobodan Jaric
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Publication Detail:
Type:  Journal Article; Randomized Controlled Trial; Research Support, N.I.H., Extramural; Research Support, Non-U.S. Gov't     Date:  2012-08-04
Journal Detail:
Title:  European journal of applied physiology     Volume:  113     ISSN:  1439-6327     ISO Abbreviation:  Eur. J. Appl. Physiol.     Publication Date:  2013 Mar 
Date Detail:
Created Date:  2013-02-12     Completed Date:  2013-08-23     Revised Date:  2014-03-10    
Medline Journal Info:
Nlm Unique ID:  100954790     Medline TA:  Eur J Appl Physiol     Country:  Germany    
Other Details:
Languages:  eng     Pagination:  577-89     Citation Subset:  IM    
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MeSH Terms
Athletic Performance / physiology
Martial Arts / physiology
Models, Biological
Motor Activity / physiology
Movement / physiology*
Muscle Strength / physiology*
Physical Fitness / physiology*
Resistance Training
Sedentary Lifestyle
Weight-Bearing / physiology*
Young Adult
Grant Support

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

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