The acute effects of combined static and dynamic stretch protocols on 50m sprint performance in track and field athletes
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Abstract
The purpose of this study was to investigate the effect of manipulating the static and dynamic stretch components associated with a traditional track-and-field warm-up. Eighteen experienced sprinters were randomly assigned in a repeated-measures, within-subject design study with 3 interventions: active dynamic stretch (ADS), static passive stretch combined with ADS (SADS), and static dynamic stretch combined with ADS (DADS). A standardized 800-m jogged warm-up was performed before each different stretch intervention, followed by two 50-m sprints. Results indicated that the SADS intervention yielded significantly (p < or = 0.05) slower 50-m sprint times then either the ADS or DADS intervention. The decrease in sprint time observed after the ADS intervention compared to the DADS intervention was found to be nonsignificant (p > 0.05). The decrease in performance post-SADS intervention was attributed to a decrease in the musculotendinous unit (MTU) stiffness, possibly due to a reduction in muscle activation prior to ground contact, leading to a decrease in the MTU's ability to store and transfer elastic energy after the use of passive static stretch techniques. The improved 50-m sprint performance associated with the ADS and DADS interventions was linked to the rehearsal of specific movement patterns, helping proprioception and preactivation, allowing a more optimum switch from eccentric to concentric muscle contraction. It was concluded that passive static stretching in a warm-up decreases sprint performance, despite being combined with dynamic stretches, when compared to a solely dynamic stretch approach.Citation
Fletcher I, Anness R (2007) 'The acute effects of combined static and dynamic stretch protocols on 50m sprint performance in track and field athletes', Journal of Strength and Conditioning Research, 21 (3), pp.784-787.Publisher
Lippincott, Williams & WilkinsPubMed ID
17685686Additional Links
https://journals.lww.com/nsca-jscr/Abstract/2007/08000/THE_ACUTE_EFFECTS_OF_COMBINED_STATIC_AND_DYNAMIC.22.aspxType
ArticleLanguage
enISSN
1064-8011ae974a485f413a2113503eed53cd6c53
10.1519/R-19475.1