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Related Experiment Video

Updated: Feb 8, 2026

Measurement of Maximum Isometric Force Generated by Permeabilized Skeletal Muscle Fibers
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Relationships between Isometric Force-Time Characteristics and Dynamic Performance.

Thomas Dos'Santos1, Christopher Thomas2, Paul Comfort3

  • 1Directorate of Sport, Exercise & Physiotherapy, University of Salford, Salford, Greater Manchester M6 6PU, UK. t.dossantos@edu.salford.ac.uk.

Sports (Basel, Switzerland)
|June 19, 2018
PubMed
Summary
This summary is machine-generated.

The isometric mid-thigh pull test reveals that rapidly generating high force is crucial for dynamic athletic performance, including power clean, countermovement jump height, and reactive strength, but not squat jump height.

Keywords:
countermovement jumpisometric mid-thigh pullpeak forcepower cleanreactive strength index modifiedsquat jumptime-specific force

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Area of Science:

  • Sports Science
  • Biomechanics
  • Human Movement

Background:

  • Dynamic performance is critical for athletic success.
  • Understanding the relationship between force production and dynamic movements is essential for training.
  • Isometric mid-thigh pull (IMTP) is a measure of force production capacity.

Purpose of the Study:

  • To investigate the correlation between isometric mid-thigh pull (IMTP) force-time characteristics and dynamic performance metrics.
  • To compare dynamic performance between stronger and weaker athletes based on IMTP data.

Main Methods:

  • Forty-three athletes from diverse sports (rowing, soccer, BMX, hockey) participated.
  • Athletes performed squat jump (SJ), countermovement jump (CMJ), IMTP, and one-repetition maximum power clean (PC).
  • Reactive strength index modified (RSImod) was calculated from CMJ data.

Main Results:

  • Strong correlations were found between IMTP force-time characteristics and power clean (PC) performance.
  • Moderate correlations existed between IMTP force-time characteristics and reactive strength index modified (RSImod).
  • CMJ height showed a moderate correlation with IMTP force at 250 ms; SJ height did not correlate significantly.

Conclusions:

  • The ability to rapidly produce high force is integral to power clean, CMJ height, and reactive strength.
  • Stronger athletes, identified by IMTP, exhibited superior CMJ height, RSImod, and PC.
  • IMTP force-time characteristics are valuable predictors of specific dynamic performance aspects in athletes.