A sled push stimulus potentiates subsequent 20-m sprint performance

Document Type

Journal Article

Publication Title

Journal of Science and Medicine in Sport

Publisher

Elsevier

School

School of Medical and Health Sciences

RAS ID

25055

Comments

Seitz, L. B., Mina, M. A., & Haff, G. G. (2017). A sled push stimulus potentiates subsequent 20-m sprint performance. Journal of Science and Medicine in Sport. 20(8), 781-785. https://doi.org/10.1016/j.jsams.2016.12.074

Abstract

Objectives

The objective of this study was to examine the potentiating effects of performing a single sprint-style sled push on subsequent unresisted 20 m sprint performance.

Design

Randomized crossover design.

Methods

Following a familiarization session, twenty rugby league players performed maximal unresisted 20 m sprints before and 15 s, 4, 8 and 12 min 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) min time points. Sprint time was slower at all the time points after the 125% body mass sled (1.36 ± 2.36%–2.59 ± 2.90%; ESs = 0.34–0.64).

Conclusions

Twenty-meter sprint performance is potentiated 4–12 min 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.

DOI

10.1016/j.jsams.2016.12.074

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