VERTICAL GROUND REACTION FORCES AND EMG DURING LANDING IN FUNCTIONALLY UNSTABLE ANKLE

Authors

  • Eneida Yuri Suda
  • Carla Sonsino Pereira
  • Isabel de Camargo Neves Sacco

Keywords:

ankle, joint instability, motor activity, electromyography, sports

Abstract

The purpose of this study was to compare vertical ground reaction forces (GRF) and electromyographic activity (EMG) from peroneus longus (PL), tibialis anterior (TA) and gastrocnemius lateralis (GL) of volleyball athletes with and without functional ankle instability (FI) during landing after a blocking maneuver. Synchronized EMG and GRF from 200ms prior to impact to 200ms after impact were acquired for 21 athletes with FI and 19 healthy ones. Results showed that FI subjects have a muscle activity that predisposes them to ankle sprains since PL presented lower RMS values prior to landing. GRFs were not different between groups.

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Published

2007-12-12

Issue

25 International Symposium on Biomechanics in Sports (2007)

Section

Muscle-Skeleton-Mechanics

License

Authors can retain copyright, while granting the International Society of Biomechanics in Sports (ISBS) the right of first publication.