Document Detail

Interaction between Thorax, Lumbar, and Pelvis Movements in the Transverse Plane during Gait at Three Velocities.
MedLine Citation:
PMID:  22927548     Owner:  NLM     Status:  Publisher    
We determined the angular range of motion and the relative timing of displacement in the thorax, lumbar spine, and pelvis in the transverse plane during treadmill walking at three velocities. Nine healthy young females walked on a treadmill for three minutes at 0.40, 0.93, and 1.47 m/s. The position of seven reflective markers and three rigs placed on the thorax, lumbar spine, and pelvis, were recorded at 200 Hz by an eight-camera motion capture system. As gait velocity increased stride length increased, cycle time decreased, and angular displacement in the thorax and L1 decreased but increased at the pelvis and L5 (all P<.05). The time of maximal angular rotation occurred in the following sequence: pelvis, L5, L3, L1, and thorax (P<.001). The thorax andL1 and L3 were in-phase for shorter duration as gait velocity increased and this reduction was especially large, ~32% (P<.05), between thorax and pelvis. As gait velocity increased, the pelvis rotated earlier, causing the shortening of in-phase duration between thorax and pelvis. These data suggest that, as gait velocity increases, pelvis rotation dictates trunk rotation in the transverse plane during gait in healthy young females.
Ya-Ting Yang; Yasuyuki Yoshida; Tibor Hortobágyi; Shuji Suzuki
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-8-23
Journal Detail:
Title:  Journal of applied biomechanics     Volume:  -     ISSN:  1065-8483     ISO Abbreviation:  J Appl Biomech     Publication Date:  2012 Aug 
Date Detail:
Created Date:  2012-8-28     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9315240     Medline TA:  J Appl Biomech     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Graduate School of Human Sciences, Waseda University, Tokorozawa, Saitama, Japan.
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