Document Detail


Reversal of antagonists: effect of elbow extension strength and endurance.
MedLine Citation:
PMID:  9365347     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
OBJECTIVE: To evaluate the reversal of elbow antagonists designed to facilitate the extensors relative to agonist-only contractions of the extensors, while using a protocol previously demonstrated to result in an increase in strength through motor learning. DESIGN: Two-group convenience sample composed of healthy subjects. SETTING: Clinic research laboratory. SUBJECTS: Twenty-eight healthy women without a history of upper extremity injury or neurologic disorder. MEASUREMENTS: Elbow extension strength and endurance were measured during maximal effort isometric reversal of the elbow antagonists (experimental group) and elbow extension only (control group) resistance exercise. Biceps brachii short head (BBS), triceps brachii lateral head (TLAT), and triceps brachii long head (TLNG) electromyographic (EMG) activity was measured concurrently. RESULTS: There were no significant differences between groups for either elbow extension strength, BBS, TLAT, or TLNG EMG activity. The experimental and control groups exhibited a significant linear (p < .01) and quadratic (p < .01) increase in baseline strength of 5.2N.m (30.5%). EMG activity from each muscle group increased linearly (p < .01) across all test sessions. Similar results were observed for elbow extension strength and biceps and triceps EMG activity during fatigue testing. CONCLUSIONS: The reversal of antagonists technique was not superior to agonist-only resistance exercise, nor did it interfere with the acquisition of muscular strength or endurance through motor learning.
Authors:
D A Gabriel; J R Basford; K N An
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Publication Detail:
Type:  Clinical Trial; Journal Article; Randomized Controlled Trial; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, P.H.S.    
Journal Detail:
Title:  Archives of physical medicine and rehabilitation     Volume:  78     ISSN:  0003-9993     ISO Abbreviation:  Arch Phys Med Rehabil     Publication Date:  1997 Nov 
Date Detail:
Created Date:  1997-11-25     Completed Date:  1997-11-25     Revised Date:  2007-11-14    
Medline Journal Info:
Nlm Unique ID:  2985158R     Medline TA:  Arch Phys Med Rehabil     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  1191-5     Citation Subset:  AIM; IM    
Affiliation:
Department of Orthopedics, Mayo Clinic, Rochester, MN, USA.
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MeSH Terms
Descriptor/Qualifier:
Adult
Analysis of Variance
Elbow Joint / physiology*
Electromyography
Female
Humans
Isometric Contraction / physiology*
Movement / physiology
Physical Endurance / physiology
Posture
Reference Values
Tensile Strength / physiology*
Grant Support
ID/Acronym/Agency:
HD07447/HD/NICHD NIH HHS

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


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