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A sled push stimulus potentiates subsequent 20-m sprint performance.

Laurent B Seitz1, Minas A Mina2, G Gregory Haff1

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|February 11, 2017
PubMed
Summary

A sled push with 75% body mass can enhance sprint performance 4-12 minutes afterward. However, using 125% body mass impairs sprint speed, highlighting the importance of load selection for post-activation potentiation.

Keywords:
FootballPerformancePhysical conditioningPost-activation potentiationResisted sprintingRunning

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Area of Science:

  • Sports Science
  • Exercise Physiology
  • Biomechanics

Background:

  • Post-activation potentiation (PAP) is a phenomenon where a prior conditioning activity enhances subsequent performance.
  • The sled push is a common exercise used to develop lower body strength and power.

Purpose of the Study:

  • To investigate the effects of a single sprint-style sled push on 20m unresisted sprint performance.
  • To determine the optimal load for eliciting post-activation potentiation in rugby league players.

Main Methods:

  • A randomized crossover design was employed with 20 rugby league players.
  • Participants performed maximal 20m sprints before and at various intervals after a sled push (75% or 125% body mass).
  • Sprint times were compared to assess post-activation potentiation (PAP) effects.

Main Results:

  • A sled push with 75% body mass resulted in potentiated sprint performance at 4, 8, and 12 minutes post-exercise.
  • Sprint performance was impaired at all measured time points following a sled push with 125% body mass.
  • Effect sizes indicated small to moderate potentiation at 75% body mass and impairment at 125% body mass.

Conclusions:

  • Sprint performance can be potentiated 4-12 minutes after a 75% body mass sled push.
  • Sprint performance is negatively affected by a 125% body mass sled push.
  • Coaches can utilize specific sled push loads to strategically enhance sprint performance through PAP.