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Related Experiment Video

Updated: May 10, 2025

An Instrumented Pull Test to Characterize Postural Responses
12:18

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The Effect of Load on Subphase Analysis During the Hang Pull.

David Meechan1,2,3, Stuart A McErlain-Naylor4, Juan Peng Phua3

  • 1Human Performance Laboratory, Directorate of Psychology and Sport, University of Salford, Salford, Greater Manchester, United Kingdom.

Journal of Strength and Conditioning Research
|April 23, 2025
PubMed
Summary

This study examined how varying loads affect the hang pull (HP) phases. Heavier loads increase force and movement duration, while lighter loads enhance propulsion velocity, suggesting HP is useful for strength development.

Keywords:
sports performancestrength trainingweightlifting

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Area of Science:

  • Sports Science
  • Biomechanics
  • Strength and Conditioning

Background:

  • Understanding the impact of varying loads on movement phases is crucial for optimizing training.
  • Time-series analysis of weightlifting derivatives can reveal differences in stimulus between relative loads.

Purpose of the Study:

  • To compare the effect of different relative loads on force-time and velocity-time curves during the hang pull (HP).

Main Methods:

  • Twenty-seven males performed the HP with loads from 40% to 140% of their one-repetition maximum (1RM) power clean (PC).
  • Vertical ground reaction force was measured using a force plate to calculate barbell-lifter system velocity.
  • Time-series data were normalized and analyzed using statistical parametric mapping.

Main Results:

  • Propulsion velocity was maximized at 40% 1RM PC, while peak force occurred at 140% 1RM PC.
  • Higher loads (140% 1RM PC) produced greater force throughout the latter movement phases.
  • Lighter loads enhanced propulsion velocity, whereas the 140% 1RM PC resulted in greater negative velocity during the unweighting/braking phase.

Conclusions:

  • The hang pull (HP) allows for the use of supramaximal loads, making it suitable for maximal strength and strength-speed training phases.
  • Prescribing the HP may be beneficial for developing maximal strength and strength-speed qualities.