Document Detail

Effects of pelvic stabilization on lumbar muscle activity during dynamic exercise.
MedLine Citation:
PMID:  16287377     Owner:  NLM     Status:  MEDLINE    
Many commonly utilized low-back exercise devices offer mechanisms to stabilize the pelvis and to isolate the lumbar spine, but the value of these mechanisms remains unclear. The purpose of this study was to examine the effect of pelvic stabilization on the activity of the lumbar and hip extensor muscles during dynamic back extension exercise. Fifteen volunteers in good general health performed dynamic extension exercise in a seated upright position on a lumbar extension machine with and without pelvic stabilization. During exercise, surface electromyographic activity of the lumbar multifidus and biceps femoris was recorded. The activity of the multifidus was 51% greater during the stabilized condition, whereas there was no difference in the activity of the biceps femoris between conditions. This study demonstrates that pelvic stabilization enhances lumbar muscle recruitment during dynamic exercise on machines. Exercise specialists can use these data when designing exercise programs to develop low back strength.
Jun G San Juan; James A Yaggie; Susan S Levy; Vert Mooney; Brian E Udermann; John M Mayer
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Journal of strength and conditioning research / National Strength & Conditioning Association     Volume:  19     ISSN:  1064-8011     ISO Abbreviation:  J Strength Cond Res     Publication Date:  2005 Nov 
Date Detail:
Created Date:  2005-11-18     Completed Date:  2006-02-28     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  9415084     Medline TA:  J Strength Cond Res     Country:  United States    
Other Details:
Languages:  eng     Pagination:  903-7     Citation Subset:  IM; S    
Department of Exercise and Nutritional Sciences, San Diego State University, San Diego, California, USA.
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MeSH Terms
Exercise Test*
Isometric Contraction / physiology
Lumbosacral Region / physiology
Muscle, Skeletal / physiology*
Recruitment, Neurophysiological / physiology
Sex Factors

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