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Between-limb differences in running technique induces asymmetric negative joint work during running.

Satoru Hashizume1, Hiroaki Hobara1, Yoshiyuki Kobayashi1

  • 1a Human Informatics Research Institute , National Institute of Advanced Industrial Science and Technology , Tokyo , Japan.

European Journal of Sport Science
|November 13, 2018
PubMed
Summary

Running generates asymmetric negative work in lower extremity joints, impacting muscle damage. This study reveals significant between-limb differences in negative work and related mechanical parameters for the hip, knee, and ankle during the running contact phase.

Keywords:
3D analysisBiomechanicsinjury & preventionkinetics

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Area of Science:

  • Biomechanics
  • Exercise Physiology
  • Sports Science

Background:

  • Negative work, primarily from eccentric muscle contractions, influences muscle damage.
  • Previous studies often assume negligible between-limb differences in mechanical parameters for lower extremities.
  • The extent of between-limb differences in negative work during running is not well understood.

Purpose of the Study:

  • To investigate between-limb differences in negative work during the contact phase of running.
  • To analyze associated mechanical parameters, including negative power, moment, and angular velocity, between lower extremities.

Main Methods:

  • Twenty-five young adult males ran at 3.0 m/s on a straight runway.
  • Negative work, amplitude, duration of negative power, moment, and angular velocity were calculated for both lower limbs.
  • Statistical analysis was performed to identify significant differences.

Main Results:

  • Significant between-limb differences in negative work were observed for the hip (18.9%), knee (13.6%), and ankle (11.8%) joints.
  • Asymmetric negative work was linked to differences in negative power amplitude and moment at the hip.
  • Knee joint asymmetry was explained by differences in negative power duration and amplitude; ankle asymmetry involved these factors plus moment differences.

Conclusions:

  • Asymmetric negative work is generated across all lower extremity joints during running.
  • The primary mechanical determinants of this asymmetry vary between the hip, knee, and ankle joints.
  • Understanding these between-limb differences is crucial for analyzing running biomechanics and injury risk.