Document Detail


Effects of endurance and strength-directed electrical stimulation training on the performance and histological properties of paralyzed human muscle: a pilot study.
MedLine Citation:
PMID:  20976779     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Electrical stimulation (ES) improves muscle properties after spinal cord injury (SCI), but cycling power output (PO) remains low. We investigated the effect of endurance and strength ES training on these parameters. Assessments of quadriceps strength and fatigue resistance, cycling PO, and muscle biopsies were made in four well-trained SCI subjects (three cyclists and one rower) before and after additional weight training in the cyclists and once in the rower. Weight training improved muscle strength, but cycling PO was low in all subjects. There was no effect of training type on biopsy data. Biopsies showed non-specific signs of pathology, predominance of type IIa fibers, and uniform metabolic activity. Oxidative activity was low, as were capillary:fiber ratios in the cyclists. Cycling PO is limited by factors other than muscle strength. Future ES training studies should attempt to improve muscle oxidative capacity to optimize the potential benefits of ES exercise.
Authors:
Lynsey D Duffell; Anthea M Rowlerson; Nick De N Donaldson; Stephen D R Harridge; Di J Newham
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Muscle & nerve     Volume:  42     ISSN:  1097-4598     ISO Abbreviation:  Muscle Nerve     Publication Date:  2010 Nov 
Date Detail:
Created Date:  2010-10-26     Completed Date:  2010-11-22     Revised Date:  2011-01-04    
Medline Journal Info:
Nlm Unique ID:  7803146     Medline TA:  Muscle Nerve     Country:  United States    
Other Details:
Languages:  eng     Pagination:  756-63     Citation Subset:  IM    
Affiliation:
Division of Applied Biomedical Research, King's College London, London, UK.
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MeSH Terms
Descriptor/Qualifier:
Bicycling / physiology
Biopsy
Cell Count
Electric Stimulation
Ergometry
Female
Humans
Isometric Contraction / physiology
Leg / physiology
Male
Middle Aged
Muscle Fatigue / physiology
Muscle Fibers, Fast-Twitch / pathology,  physiology
Muscle Strength / physiology*
Muscle, Skeletal / pathology*,  physiopathology*
Oxidation-Reduction
Paralysis / pathology*,  physiopathology*
Physical Endurance / physiology*
Physical Fitness / physiology*
Pilot Projects
Spinal Cord Injuries / pathology,  physiopathology
Weight Lifting / physiology
Comments/Corrections
Erratum In:
Muscle Nerve. 2011 Jan;43(1):154

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


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