Document Detail

Individual finger contribution in submaximal voluntary contraction of gripping.
MedLine Citation:
PMID:  22026950     Owner:  NLM     Status:  In-Data-Review    
The objective of this study was to evaluate individual finger force and contribution to a gripping force, the difference between actual and expected finger forces and subjective discomfort rating at 10 different submaximal voluntary contraction (%MVC) levels (10-100% in 10 increments). Seventy-two participants randomly exerted gripping force with a multi-finger force measurement system. The individual finger force, gripping force and discomfort increased as %MVC levels increased. The middle and ring fingers exerted more force and contributed to a gripping force more than the index and little fingers due to their larger mass fractions of the digit flexor muscles. It was apparent at <50% MVC; however, the index finger increased its contribution and exerted even more force than expected at more than 50% MVC. Subjective discomfort supported the results of the objective measures. This could explain the conflicting findings between index and ring fingers in previous finger contribution studies. Statement of Relevance: Hand tool design is of special interest in ergonomics due to its association with musculoskeletal disorders in the hand. This study reveals a different contribution pattern of the fingers in submaximal voluntary contraction of gripping exertion.
Yong-Ku Kong; Kyung-Sun Lee; Dae-Min Kim; Myung-Chul Jung
Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Ergonomics     Volume:  54     ISSN:  1366-5847     ISO Abbreviation:  Ergonomics     Publication Date:  2011 Nov 
Date Detail:
Created Date:  2011-10-26     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0373220     Medline TA:  Ergonomics     Country:  England    
Other Details:
Languages:  eng     Pagination:  1072-80     Citation Subset:  IM; S    
a Department of Industrial Engineering , Sungkyunkwan University , Suwon , South Korea.
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