Document Detail


Sensitivity of loading to the timing of joint kinematic strategies in simulated forefoot impact landings.
MedLine Citation:
PMID:  19827472     Owner:  NLM     Status:  In-Process    
Abstract/OtherAbstract:
The impact loads experienced in landing may be influenced by the joint kinematic strategy used. This study aimed to enhance the understanding of the sensitivity of impact loading to the timing of joint kinematic strategies in simulated forefoot landings. Coordinate and force data of drop landings were used to initiate, drive, and evaluate a wobbling mass model. Ankle, knee, and hip joint angle profile timings were modified in the simulated motions. Changes to the timing of the ankle and knee joint angle profiles were associated with substantial changes in the peak vertical ground reaction force (GFzmax) of up to 3.9 bodyweights (BW) and 1.5 BW, respectively, whereas loading was less sensitive to temporal changes in the hip joint strategy. Accentuated impact loads incurred by a modified knee flexion action may be explained by the need to maintain an ordered and controlled load attenuation strategy. Individual strategies and external and joint reaction forces should be considered for developing insight into loading in impact landings.
Authors:
Marianne J R Gittoes; David G Kerwin; Mark A Brewin
Publication Detail:
Type:  Comparative Study; Journal Article    
Journal Detail:
Title:  Journal of applied biomechanics     Volume:  25     ISSN:  1065-8483     ISO Abbreviation:  J Appl Biomech     Publication Date:  2009 Aug 
Date Detail:
Created Date:  2009-10-15     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9315240     Medline TA:  J Appl Biomech     Country:  United States    
Other Details:
Languages:  eng     Pagination:  229-37     Citation Subset:  IM    
Affiliation:
Cardiff School of Sport, University of Wales Institute, Cardiff, UK.
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