Document Detail

Multi-segmental torso coordination during the transition from sitting to standing.
MedLine Citation:
PMID:  20022414     Owner:  NLM     Status:  MEDLINE    
BACKGROUND: Research into the multi-segmental mobility of the torso could add to our understanding of the contributions of the head and torso to human movement. The purpose of this study was to determine the motion and temporal coordination of the head and multiple torso segments during the sit-to-stand task.
METHODS: Thirty-two young, healthy participants performed five trials of the sit-to-stand movement and 6s of sitting. Range of motion and patterns of peak flexion and extension of six segments and joints and cross correlation of pairs of the six torso segments were analyzed from 3-D kinematic data.
FINDINGS: Sagittal range of motion for torso joints during the sit-to-stand task was greater than during sitting trials; motion at the lumbar/pelvis joint was greater than at other torso joints. Peak flexion of torso joints occurred earlier than peak extension. Cross correlations at zero lag and time lags of maximum cross correlations varied such that there was greater temporal coordination of intermediate torso segments compared to pairs including the head and pelvis. There was greater temporal coordination of adjacent segment pairs than for pairs that were less proximal to each other.
INTERPRETATION: A high degree of mobility occurs within the torso during the sit-to-stand task. Varying coordination patterns suggest that there are regional differences in movement timing within the torso that may relate to segmental differences in functional roles. Employing multi-segmental torso models may indicate different movement strategies within a healthy population and could highlight differences between clinical populations.
Molly B Johnson; Timothy W Cacciatore; Joseph Hamill; Richard E A Van Emmerik
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Publication Detail:
Type:  Journal Article     Date:  2009-12-22
Journal Detail:
Title:  Clinical biomechanics (Bristol, Avon)     Volume:  25     ISSN:  1879-1271     ISO Abbreviation:  Clin Biomech (Bristol, Avon)     Publication Date:  2010 Mar 
Date Detail:
Created Date:  2010-02-17     Completed Date:  2010-05-24     Revised Date:  2014-02-19    
Medline Journal Info:
Nlm Unique ID:  8611877     Medline TA:  Clin Biomech (Bristol, Avon)     Country:  England    
Other Details:
Languages:  eng     Pagination:  199-205     Citation Subset:  IM    
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MeSH Terms
Head Movements / physiology*
Joints / physiology*
Movement / physiology*
Postural Balance / physiology*
Posture / physiology*
Range of Motion, Articular
Task Performance and Analysis*
Grant Support
G0802073//Medical Research Council

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

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