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The Optimal Load for Maximal Power Production During Lower-Body Resistance Exercises: A Meta-Analysis.

Marco A Soriano1, Pedro Jiménez-Reyes, Matthew R Rhea

  • 1Department of Physical Activity and Sport Sciences, Kinesiology and Biomechanics Laboratory, San Antonio Catholic University of Murcia, Murcia, Spain.

Sports Medicine (Auckland, N.Z.)
|June 12, 2015
PubMed
Summary
This summary is machine-generated.

Optimal load for peak power varies by exercise. Moderate loads benefit squats, lighter loads benefit jump squats, and heavier loads benefit power cleans. This informs program design for athletes.

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Area of Science:

  • Sports Science
  • Biomechanics
  • Exercise Physiology

Background:

  • Muscular power development is crucial for athletic performance.
  • Strength and conditioning programs often prioritize power enhancement.

Purpose of the Study:

  • To meta-analyze the effect of varying loads on peak power output.
  • To identify exercise-specific optimal loads for power production.
  • To guide strength and conditioning professionals in program design.

Main Methods:

  • Systematic search of electronic databases (MEDLINE, PubMed, Google Scholar, Web of Science) up to June 2014.
  • Included 27 studies with 468 participants and 5766 effect sizes.
  • Categorized loads into three zones: 0-30% 1RM (Zone 1), 30-70% 1RM (Zone 2), and ≥70% 1RM (Zone 3).

Main Results:

  • Optimal load for peak power differs across exercises.
  • Squats: Moderate loads (30-70% 1RM) yielded optimal power.
  • Jump squats: Lighter loads (≤30% 1RM) produced highest peak power.
  • Power cleans and hang power cleans: Heavier loads (≥70% 1RM) resulted in greater peak power.

Conclusions:

  • Evidence supports exercise-specific optimal loads for maximizing power production.
  • Findings provide a basis for evidence-based program design in strength and conditioning.