Document Detail

Acute Effect of Passive Static Stretching on Lower-body Strength in Moderately Trained Males.
MedLine Citation:
PMID:  22692125     Owner:  NLM     Status:  Publisher    
ABSTRACT: The purpose of this investigation was conducted to determine the acute effect of passive static stretching of the lower-body musculature on lower-body strength in a one repetition maximum (1RM) squat exercise in young (18 -24 yrs.) moderately trained men (N = 17). Two supervised warm-up treatments were applied before each performance testing session using a counterbalanced design on nonconsecutive days. The first treatment consisted of an active dynamic warm-up (AD) with resistance machines (i.e. leg extension / leg flexion) and free weights (i.e. barbell squat) while the second treatment added passive static stretching (PSS) of the lower-body plus the AD treatment. 1RM was determined using the maximum barbell squat following a progressive loading protocol. Subjects were also asked to subjectively evaluate their lower-body stability during 1RM testing sessions for both the AD and PSS treatments. A significant decrease in 1RM (8.36 %) and lower-body stability (22.68 %) was observed following the PSS treatment. Plausible explanations for this observation may be related to a more compliant muscle tendon unit (MTU) and / or altered or impaired neurological function in the active musculature. It is also possible that strength was impaired by the PSS due to joint instability. The findings of this study suggest that intensive stretching such as lower-body PSS should be avoided prior to training the lower-body or performing the 1RM in the squat exercise in favor of an AD dynamic warm-up using resistance training equipment in the lower-body musculature.
Jeffrey C Gergley
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-6-11
Journal Detail:
Title:  Journal of strength and conditioning research / National Strength & Conditioning Association     Volume:  -     ISSN:  1533-4287     ISO Abbreviation:  -     Publication Date:  2012 Jun 
Date Detail:
Created Date:  2012-6-13     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9415084     Medline TA:  J Strength Cond Res     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Associate Professor: Department of Kinesiology & Health Science, Box 13015 - SFA Station, Nacogdoches, Texas 75962-3015, Office: (936) 468-1614, Fax: (936) 468-1850. Email:
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