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Differences in Kinetics during One- and Two-Leg Hang Power Clean.

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Summary

The one-leg hang power clean (OHPC) demonstrates superior explosive force and power compared to the two-leg hang power clean (THPC) across various training loads. This highlights OHPC as a potentially more effective exercise for developing key athletic performance metrics.

Keywords:
bilateral deficitpower trainingresistance trainingweightlifting exercise

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Area of Science:

  • Biomechanics
  • Sports Science
  • Exercise Physiology

Background:

  • The hang power clean is a fundamental weightlifting exercise for developing explosive power.
  • Understanding the kinetic differences between one-leg and two-leg variations is crucial for optimizing training.
  • Previous research has not fully quantified the force and power output disparities during these movements.

Purpose of the Study:

  • To quantify and compare the leg kinetics during the one-leg hang power clean (OHPC) and two-leg hang power clean (THPC).
  • To analyze the effects of varying loads (30%, 60%, 90% of estimated/actual one-repetition maximum) on these kinetic parameters.
  • To determine which variation elicits greater explosive force and power development.

Main Methods:

  • Nine male track and field athletes participated in the study.
  • Participants performed OHPC and THPC using loads at 30%, 60%, and 90% of their respective one-repetition maximums.
  • Force-time data were collected using a force platform to calculate peak power, peak force, and peak rate of force development during the pull phase.

Main Results:

  • Peak power and peak force were significantly greater during OHPC compared to THPC across all tested loads.
  • Peak rate of force development was significantly higher during OHPC at 60% and 90% loads compared to THPC.
  • A notable finding was that peak power during THPC at 90% load was significantly less than at 60% load.

Conclusions:

  • The one-leg hang power clean (OHPC) demonstrates greater explosive force and power development characteristics than the two-leg hang power clean (THPC).
  • The findings suggest that OHPC, particularly at higher loads (60% and 90%), may be a more effective exercise for enhancing explosive power in athletes.
  • These kinetic differences provide valuable insights for coaches and athletes in exercise selection and program design.