A sled push stimulus potentiates subsequent 20-m sprint performance

Abstracts Methods Following a familiarization session, twenty rugby league players performed maximal unresisted 20 m sprints before and 15 s, 4, 8 and 12 minutes after a single sled push stimulus loaded with either 75 or 125% body mass. The two sled push conditions were performed in a randomized ord...

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Bibliographic Details
Published in:Journal of science and medicine in sport 2017-08, Vol.20 (8), p.781-785
Main Authors: Seitz, Laurent B, Mina, Minas A, Haff, G.Gregory
Format: Article
Language:English
Subjects:
Adolescent
Adult
Athletes
Athletic Performance - physiology
Cross-Over Studies
Football
Football - physiology
Humans
Load
Physical conditioning
Physical Medicine and Rehabilitation
Post-activation potentiation
Resistance Training - methods
Resisted sprinting
Rugby
Running
Running - physiology
Sports Medicine
Strength training
Time Factors
Weight-Bearing - physiology
Young Adult
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Summary:Abstracts Methods Following a familiarization session, twenty rugby league players performed maximal unresisted 20 m sprints before and 15 s, 4, 8 and 12 minutes after a single sled push stimulus loaded with either 75 or 125% body mass. The two sled push conditions were performed in a randomized order over a one-week period. The fastest sprint time recorded before each sled push was compared to that recorded at each time point after to determine the post-activation potentiation (PAP) effect. Results After the 75% body mass sled push, sprint time was 0.26 ± 1.03% slower at the 15 s time point (effect size [ES] = 0.07) but faster at the 4 (-0.95 ± 2.00%; ES = −0.22), 8 (-1.80 ± 1.43%; ES = −0.42) and 12 (-1.54 ± 1.54%; ES = −0.36) minute time points. Sprint time was slower at all the time points after the 125% body mass sled (1.36 ± 2.36% to 2.59 ± 2.90%; ESs = 0.34 to 0.64). Conclusions Twenty-meter sprint performance is potentiated 4 to 12 minutes following a sled push loaded with 75% body mass while it is impaired after a 125% body mass sled. These results are of great importance for coaches seeking to potentiate sprint performance with the sled push exercise.
ISSN:1440-2440
1878-1861
DOI:10.1016/j.jsams.2016.12.074