Document Detail


Sequential processes for controlling distance in multijoint movements.
MedLine Citation:
PMID:  18628109     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The purpose of this study was to examine the mechanisms underlying control of distance during multijoint movements in different directions. The findings revealed 2 sequential muscle torque impulses, which correlated with 2 events in the hand acceleration profile. These 2 events occurred prior to peak velocity, characterizing control in the initial acceleration phase of motion. The contribution of shoulder and elbow joint torque to each event varied with movement direction. However, regardless of direction, these 2 torque events appeared to be functionally distinguishable: a preplanned initiation event was responsible for the initial hand acceleration, whereas a 2nd modulation event adjusted acceleration in compensation for variations in acceleration. Thus, the findings support the idea that control of distance during multijoint movement occurs through sequential control mechanisms.
Authors:
Sydney Y Schaefer; Robert L Sainburg
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Publication Detail:
Type:  Clinical Trial; Journal Article; Research Support, N.I.H., Extramural; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Journal of motor behavior     Volume:  40     ISSN:  0022-2895     ISO Abbreviation:  J Mot Behav     Publication Date:  2008 Jul 
Date Detail:
Created Date:  2008-07-16     Completed Date:  2008-09-11     Revised Date:  2013-06-21    
Medline Journal Info:
Nlm Unique ID:  0236512     Medline TA:  J Mot Behav     Country:  United States    
Other Details:
Languages:  eng     Pagination:  325-36     Citation Subset:  IM    
Affiliation:
Department of Kinesiology, The Gerontology Center, Pennsylvania State University, University Park, PA 16802, USA.
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MeSH Terms
Descriptor/Qualifier:
Adult
Algorithms
Biomechanics / methods,  statistics & numerical data
Elbow Joint / physiology
Electromyography
Female
Humans
Joints / physiology*
Kinetics
Male
Motor Activity / physiology*
Movement / physiology*
Muscle, Skeletal / physiology*
Psychomotor Performance / physiology
Shoulder Joint / physiology
Torque*
Grant Support
ID/Acronym/Agency:
R01 HD039311/HD/NICHD NIH HHS; R01 HD039311-06A2/HD/NICHD NIH HHS; R01 HD039311-07/HD/NICHD NIH HHS; R01 HD039311-08/HD/NICHD NIH HHS; R01HD39311/HD/NICHD NIH HHS; T32AG00048/AG/NIA NIH HHS
Comments/Corrections

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