The comparison of the electromyography activity of selected muscles of the ankle joint in athletes with ankle dorsiflexion range of motion limitation with healthy athletes during the single-leg jump landing

Document Type : Original article

Authors

1 1 MSc in corrective exercise and sport injury, university of Tehran. Tehran. Iran

2 2 Assistant Professor, Department of Sport Medicine, Universiy of Tehran. Tehran. Iran

3 3 Professor, Department of Sport Medicine, Universiy of Tehran. Tehran. Iran

4 4 PHD student in sport injury, Shahid Ba Honar,University of Kerman. Kerman. Iran

5 5 MSc in Motor Control, university of Tehran. Tehran. Iran

Abstract

Background and Aim: Limitation of ankle dorsiflexion range of motion as the most important risk factors for ankle sprain injury can cause disorders in neuromuscular control of muscles around the ankle. The aim of this study was to compare the EMG activity of selected muscles around the ankle joint of those athletes with ankle dorsiflexion range of motion limitation with healthy Athletes during the single-leg jump landing.
Materials and Methods: Fifteen male athletes with ankle dorsiflexion range of motion limitations were categorized as the group with limitation and the same number of male athletes without limitation in ankle dorsiflexion range of motion as the healthy group. Universal goniometer was used to measure range of motion of the ankle. EMG activity of selected muscles of the ankle during single-leg jump landing task was recorded. A multivariate analysis of variance was used to compare the EMG activity of the muscles between groups. The significance level for all analyses was set as p≤0/05.
Results: The results showed that Peroneus Longus, Lateral Gastrocnemius and Soleus muscles in the athletes with motion limitation had significantly lower levels of activity than control group. But the Tibialis Anterior muscle activity was not significantly different between the two groups (p≤0/05).
Conclusions: The reduction in muscle activity observed in the group with motion limitation can be attributed to changes in preplanned programs of the motor control of nervous system and proprioceptive afferent messages disorder of ankle joint.

Keywords

References

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  1. Vladimir Mrdakovic, Dusko B. Ilic, Nenad Jankovic, Zeljko Rajkovic and Djordje Stefanovic. Pre-activity Modulation of lower Extremity Muscles Within Different Types and Heights of Deep Jump. J Sports Sci Med. 2008;7(2):269-78.
The Scientific Journal of Rehabilitation Medicine
Volume 2, Issue 2 - Serial Number 2
July and August 2013
Pages 14-23

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History

  • Receive Date: 09 June 2012
  • Revise Date: 13 October 2012
  • Accept Date: 06 November 2012
  • First Publish Date: 22 June 2013

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