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No differences in weightlifting overhead pressing exercises kinetics.

Marcos A Soriano1,2,3, Jason Lake4,5, Paul Comfort3,5

  • 1Strength Training & Neuromuscular Performance Research Group, Camilo José Cela University, Madrid, Spain.

Sports Biomechanics
|October 27, 2021
PubMed
Summary
This summary is machine-generated.

This study found no significant kinetic differences between the push press (PP), push jerk (PJ), and split jerk (SJ) when performed at 80% of the one-repetition maximum (1RM) push press. All three Olympic lifts demonstrated reliable force and power output measures.

Keywords:
Push pressbiomechanicsforce platformpower outputpush jerksplit jerk

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Area of Science:

  • Biomechanics
  • Sports Science
  • Human Movement Analysis

Background:

  • The push press (PP), push jerk (PJ), and split jerk (SJ) are distinct weightlifting exercises.
  • Understanding the kinetic differences between these lifts is crucial for optimizing training and performance.

Purpose of the Study:

  • To compare the kinetics (force, power, impulse) of the PP, PJ, and SJ.
  • To assess the reliability of kinetic measures across repetitions for each lift.

Main Methods:

  • Sixteen resistance-trained individuals performed 3 repetitions of PP, PJ, and SJ at 80% of their 1RM PP.
  • Kinetics were measured using a force platform, analyzing dip and thrust phases.
  • Inter-repetition reliability was assessed using Intraclass correlation coefficients (ICC).

Main Results:

  • No significant differences in peak force, mean force, peak power, mean power, or impulse were found between the PP, PJ, and SJ.
  • Reliability for kinetic measures was moderate to excellent across all three lifts (ICC range: 0.55-1.00).

Conclusions:

  • The PP, PJ, and SJ exhibit similar kinetic profiles when executed at the same relative load (80% 1RM PP).
  • These findings suggest that load, rather than the specific lift variation, is the primary determinant of kinetics at this intensity.