Document Detail


Acute neuromuscular responses to resistance training performed at different loads.
MedLine Citation:
PMID:  16580253     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The aim of this study was to compare the acute neuromuscular responses during resistance exercise performed with different loading protocols. Thirteen (N=13) college-aged male subjects experienced in weight training completed two different weight training protocols involving a single elbow flexion exercise. During both protocols subjects performed three sets of the exercise with a 3-min rest between each set. One protocol required the subjects to perform each set to failure using 100% 10 repetition maximum (RM) load whereas the second protocol required the subjects to perform 10 repetitions for the first two sets using 90% 10RM load and only go to failure on the third set. Maximal voluntary isometric contraction (MVIC), integrated EMG recording (iEMG) of the biceps brachii, and blood lactate were measured before and upon completion of the two training protocols. Subjects were able to perform a significantly greater volume of work (total repetitionsxload) in the 90% 10RM protocol compared to the 100% 10RM protocol. Both protocols elicited similar cumulative levels of fatigue as reflected by a decrease in MVIC and iEMG(max) and an increase in blood lactate (p< or =0.05). As a result of the drop in repetitions performed in successive sets, it was concluded that training with 100% 10RM while exercising to failure in each set may not optimise the training volume, which may have implications for chronic muscle adaptation.
Authors:
C Benson; D Docherty; J Brandenburg
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Publication Detail:
Type:  Comparative Study; Journal Article     Date:  2006-03-31
Journal Detail:
Title:  Journal of science and medicine in sport / Sports Medicine Australia     Volume:  9     ISSN:  1440-2440     ISO Abbreviation:  J Sci Med Sport     Publication Date:  2006 May 
Date Detail:
Created Date:  2006-05-08     Completed Date:  2006-07-20     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  9812598     Medline TA:  J Sci Med Sport     Country:  Australia    
Other Details:
Languages:  eng     Pagination:  135-42     Citation Subset:  IM    
Affiliation:
ARC Performance Training Systems, Surrey, BC, Canada.
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MeSH Terms
Descriptor/Qualifier:
Adult
Elbow Joint / physiology*
Electromyography
Humans
Isometric Contraction
Lactic Acid / blood
Male
Physical Education and Training / methods*
Weight Lifting / physiology*
Chemical
Reg. No./Substance:
50-21-5/Lactic Acid

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


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