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Correlation between ankle plantar flexor strength and leg extensor torque.

Takashi Yoshizawa1, Masahiro Kitamura1, Nobuhiro Okamoto1

  • 1Department of Physical Therapy, Fukuoka Wajiro Rehabilitation College: 2-1-13 Wajirogaoka, Higashiku, Fukuoka-city, Fukuoka 811-0213, Japan.

Journal of Physical Therapy Science
|September 5, 2020
PubMed
Summary

Strengthening ankle muscles (triceps surae) significantly boosts leg extensor torque in healthy adults. This suggests targeted physical therapy for ankle strength can improve overall leg extension power.

Keywords:
Ankle plantar flexor strengthClosed kinetic chainLeg extensor torque

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Area of Science:

  • Biomechanics
  • Exercise Physiology

Background:

  • Leg extensor torque is crucial for activities like walking and jumping.
  • The role of ankle plantar flexor strength (triceps surae) in modulating leg extensor torque requires further investigation.

Purpose of the Study:

  • To examine the correlation between ankle plantar flexor strength and leg extensor torque.
  • To determine if increased triceps surae muscle strength positively impacts leg extension torque.

Main Methods:

  • Recruited 30 males and 22 healthy adult females.
  • Measured ankle plantar flexor strength using a Hand Held Dynamometer.
  • Assessed leg extensor torque with the Strength Ergo 240.

Main Results:

  • A significant positive correlation was found between ankle plantar flexor strength and leg extensor torque in both males and females.
  • Both left and right leg measurements showed this positive relationship.

Conclusions:

  • Ankle plantar flexor strength is a meaningful predictor of leg extensor torque.
  • Physical therapy interventions focused on strengthening the ankle plantar flexors may enhance leg extensor torque.