Document Detail


Mechanical properties of the human heel pad: a comparison between populations.
MedLine Citation:
PMID:  19075307     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The purpose of this study was to compare the heel pad mechanical properties of runners, who repetitively load the heel pad during training, with cyclists who do not load their heel pads during training. Ten competitive long distance runners and 10 competitive cyclists volunteered for this study. The thickness of the unloaded heel pad was measured using realtime B-mode ultrasonography. A heel pad indentation device was used to measure the mechanical properties of the heel pads. To evaluate the differences between the two groups, in heel pad properties, a repeat measures analysis of variance was used (p <.05.) Heel pad thickness was not different between groups when normalized with respect to subject height. There was no significant difference between the groups in percentage energy loss during loading and unloading (runners: 61.4% +/- 8.6; cyclists: 62.5% +/- 4.6 ). Heel pad stiffness for the runners was statistically significantly less than that of the cyclists (p = .0018; runners: 17.1 N. -1 +/- 3.0; cyclists: 20.4 N. -1 +/- 4.0). These results indicate that the nature of the activity undertaken by individuals may influence their heel pad properties. This finding may be important when considering differences in heel pad properties between different populations.
Authors:
John H Rchallis; Chloe Murdoch; Samantha L Winter
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Publication Detail:
Type:  Comparative Study; Journal Article    
Journal Detail:
Title:  Journal of applied biomechanics     Volume:  24     ISSN:  1065-8483     ISO Abbreviation:  J Appl Biomech     Publication Date:  2008 Nov 
Date Detail:
Created Date:  2008-12-16     Completed Date:  2009-01-28     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9315240     Medline TA:  J Appl Biomech     Country:  United States    
Other Details:
Languages:  eng     Pagination:  377-81     Citation Subset:  IM    
Affiliation:
Biomechanics Laboratory, Pennsylvania State University, University, Park, PA, USA.
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MeSH Terms
Descriptor/Qualifier:
Adolescent
Bicycling / physiology*
Biomechanics / physiology
Female
Gait
Heel / physiology*,  ultrasonography
Humans
Male
Running / physiology*
Young Adult

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


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