Document Detail


Mechanical power and segmental contribution to force impulses in long jump take-off.
MedLine Citation:
PMID:  499190     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Changes in total mechanical work, its partitioning into different energy states, mechanical power, force-time characteristics, force impulses of body segments and mass center's pathway characteristics during long jump take-off were investigated on four national and six ordinary level athletes. Both cinematographic and force-platform techniques were used. The data showed that the national level jumpers had higher run-up and higher take-off (release) velocities in horizontal and vertical directions. In addition, they were able to utilize efficiently the elastic energy stored in the leg extensor muscles at take-off impact. This was seen in high support leg eccentric and concentric forces, which were produced in short contact times. The ordinary level athletes had greater variability in the investigated attributes, and they reached their maximum length of jumps in many different ways. Cinematically the greatest difference between the subject groups was observed in the timing of the various body segment movements. In better athletes all the body parts (arms, trunk, and legs) had decelerating horizontal impulses, but in all ordinary level athletes the horizontal impulse of the swing leg was accelerating during take-off.
Authors:
P Luhtanen; P V Komi
Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  European journal of applied physiology and occupational physiology     Volume:  41     ISSN:  0301-5548     ISO Abbreviation:  Eur J Appl Physiol Occup Physiol     Publication Date:  1979 Aug 
Date Detail:
Created Date:  1980-01-24     Completed Date:  1980-01-24     Revised Date:  2004-11-17    
Medline Journal Info:
Nlm Unique ID:  0410266     Medline TA:  Eur J Appl Physiol Occup Physiol     Country:  GERMANY, WEST    
Other Details:
Languages:  eng     Pagination:  267-74     Citation Subset:  IM    
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MeSH Terms
Descriptor/Qualifier:
Biomechanics
Humans
Motor Skills / physiology*
Sports Medicine*
Track and Field*

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


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