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Duration of stretch does not influence the degree of force loss following static stretching.
J Sports Med Phys Fitness. 2006 Dec; 46(4):526-34.JS

Abstract

AIM

There is an emerging body of knowledge indicating static stretching (SS) acutely and adversely affects muscle performance. The practical value of this research is limited considering the lengthy stretch durations under investigation. It is unclear if stretch durations typical of those used pre-exercise similarly affect muscle performance. The purpose of this study was to determine if SS using more representative stretch durations affects muscle performance and to establish if changes in muscle performance were influenced by the duration of stretch.

METHODS

Following 2 familiarization sessions, 16 recreationally trained males and females participated in 2 randomly ordered experimental sessions. In each session maximal effort hamstring performance was assessed prior to and immediately after 1 of 2 stretching protocols. During one of the protocols participants were required to hold each stretch for 15 s while stretch duration in the second protocol was 30 s. Both protocols consisted of 3 repetitions of 2 stretching exercises. A Kincom isokinetic dynamometer was used to assess hamstring performance during isometric, concentric, and eccentric actions.

RESULTS

For each of the three muscle actions a repeated measures ANOVA revealed a significant main effect of time (pre- vs poststretch, P<0.05) but no interaction effect (time x SS protocol). Furthermore, the stretch-induced deficits in muscle performance were consistent across muscle action type.

CONCLUSIONS

SS incorporating stretch durations typical of those employed pre-exercise were sufficient to impair muscle performance and the duration of stretch did not influence the degree of force loss. Inclusion of SS, even with short stretch durations, in preparation for strength activities is not appropriate.

Authors+Show Affiliations

Department of Kinesiology of Physical Education, Northern Illinois University, DeKalb, IL, USA. jasonb@niu.edu

Pub Type(s)

Comparative Study
Journal Article

Language

eng

PubMed ID

17119516

Citation

Brandenburg, J P.. "Duration of Stretch Does Not Influence the Degree of Force Loss Following Static Stretching." The Journal of Sports Medicine and Physical Fitness, vol. 46, no. 4, 2006, pp. 526-34.
Brandenburg JP. Duration of stretch does not influence the degree of force loss following static stretching. J Sports Med Phys Fitness. 2006;46(4):526-34.
Brandenburg, J. P. (2006). Duration of stretch does not influence the degree of force loss following static stretching. The Journal of Sports Medicine and Physical Fitness, 46(4), 526-34.
Brandenburg JP. Duration of Stretch Does Not Influence the Degree of Force Loss Following Static Stretching. J Sports Med Phys Fitness. 2006;46(4):526-34. PubMed PMID: 17119516.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Duration of stretch does not influence the degree of force loss following static stretching. A1 - Brandenburg,J P, PY - 2006/11/23/pubmed PY - 2007/3/23/medline PY - 2006/11/23/entrez SP - 526 EP - 34 JF - The Journal of sports medicine and physical fitness JO - J Sports Med Phys Fitness VL - 46 IS - 4 N2 - AIM: There is an emerging body of knowledge indicating static stretching (SS) acutely and adversely affects muscle performance. The practical value of this research is limited considering the lengthy stretch durations under investigation. It is unclear if stretch durations typical of those used pre-exercise similarly affect muscle performance. The purpose of this study was to determine if SS using more representative stretch durations affects muscle performance and to establish if changes in muscle performance were influenced by the duration of stretch. METHODS: Following 2 familiarization sessions, 16 recreationally trained males and females participated in 2 randomly ordered experimental sessions. In each session maximal effort hamstring performance was assessed prior to and immediately after 1 of 2 stretching protocols. During one of the protocols participants were required to hold each stretch for 15 s while stretch duration in the second protocol was 30 s. Both protocols consisted of 3 repetitions of 2 stretching exercises. A Kincom isokinetic dynamometer was used to assess hamstring performance during isometric, concentric, and eccentric actions. RESULTS: For each of the three muscle actions a repeated measures ANOVA revealed a significant main effect of time (pre- vs poststretch, P<0.05) but no interaction effect (time x SS protocol). Furthermore, the stretch-induced deficits in muscle performance were consistent across muscle action type. CONCLUSIONS: SS incorporating stretch durations typical of those employed pre-exercise were sufficient to impair muscle performance and the duration of stretch did not influence the degree of force loss. Inclusion of SS, even with short stretch durations, in preparation for strength activities is not appropriate. SN - 0022-4707 UR - https://www.unboundmedicine.com/medline/citation/17119516/Duration_of_stretch_does_not_influence_the_degree_of_force_loss_following_static_stretching_ L2 - https://medlineplus.gov/exerciseandphysicalfitness.html DB - PRIME DP - Unbound Medicine ER -