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Portable fixed dynamometry to quantify ankle dorsiflexion force.

Marita E Mauracher1, Michael J Asmussen2, Sandro R Nigg2

  • 1Institute for Biomechanics, ETH Zurich, Zurich, Switzerland.

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|March 22, 2019
PubMed
Summary

The novel rapid objective quantification-tibialis anterior (ROQ-TA) device reliably and validly measures ankle dorsiflexion strength in healthy individuals. This tool offers a rapid, objective method for assessing muscle strength.

Keywords:
dynamometrymuscle strengthobjectivereliabilitytibialis anteriorvalidity

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Area of Science:

  • Biomechanics
  • Neuromuscular Function
  • Clinical Measurement

Background:

  • Accurate quantification of muscle strength is essential for clinical diagnosis and research.
  • Existing methods for measuring muscle strength can be time-consuming or subjective.
  • There is a need for rapid, objective tools to assess muscle function, particularly the tibialis anterior.

Purpose of the Study:

  • To evaluate the reliability and validity of a new device, the rapid objective quantification-tibialis anterior (ROQ-TA).
  • To compare the ROQ-TA's performance against established methods like manual muscle testing and isokinetic dynamometry.
  • To determine the clinical utility of the ROQ-TA for measuring ankle dorsiflexion force.

Main Methods:

  • Twenty healthy subjects participated in the study.
  • Ankle dorsiflexion strength was measured using the ROQ-TA, manual muscle testing, and isokinetic dynamometry (IKD).
  • Measurements were repeated across two separate testing sessions to assess reliability.

Main Results:

  • The ROQ-TA demonstrated high reliability, with an intraclass correlation coefficient (ICC) of 0.872.
  • Isokinetic dynamometry also showed high reliability (ICC = 0.892).
  • The ROQ-TA showed good agreement with IKD for validity, with ICCs of 0.672 and 0.769 across the two sessions.

Conclusions:

  • The ROQ-TA is a reliable and valid instrument for assessing ankle dorsiflexion force.
  • This device provides a rapid and objective measure of tibialis anterior muscle strength.
  • The ROQ-TA shows promise as a valuable tool in both clinical and research settings for muscle strength assessment.