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:: Volume 25, Number 2 (7-2017) ::
sjimu 2017, 25(2): 42-54 Back to browse issues page
The Effects of Plyometric Training on Performance and the Feed-forward Activation of Calf Muscles in Active Females with Functional Ankle Instability in Single Leg Drop Landing
Somayeh Momeni *1, Amirhoseyn Barati2, Amir Letafatkar3, Aliashraf Jamshidi4, Fariborz Hovanlo5
1- Dept of Biomechanics and Sport Medicine, Faculty of Physical Education, Kharazmi University, Tehran, Iran , sm.822003@gmail.com
2- Dept of Sport Medicine, Faculty of Physical Education, Shahid Beheshti University, Tehran, Iran
3- Dept of Biomechanics and Sport Medicine, Faculty of Physical Education, Kharazmi University, Tehran, Iran
4- Dept of Physiotherapy, Faculty of Rehabilitation, Tehran University of Medical Sciences, Tehran, Iran
5- Depat of Physiology, Faculty of Physical Education, Shahid Beheshti University, Tehran, Iran
Abstract:   (483 Views)
Introduction: Appropriate muscle recruitment has a significant role in the stabilization of joints. The aim of this study is to investigate the effects of six weeks Plyometric training on performance and the feed-forward activation of calf muscles in active females with functional ankle instability in single leg drop landing.


Materials & methods: Thirty active females with functional ankle instability participated in this quasi-experimental study. The experimental group underwent six weeks of Pi-Yin Hung Plyometric training protocol during the period of 18 sessions. In order to assess the performance, functional tests (lateral hop and multiple hop tests) and ankle joint function assessment tool were used. Electrical activation assessments of peroneus longus, tibialis anterior and gastrocnemius muscles (in single leg drop landing task) were completed in the pre-test and post-test (after six weeks). SPSS Software version 20 was used in order to analyze the data (p<0.05).

Finding: Results revealed that after the implementation of six weeks Plyometric training, multiple hops testing time dropped significantly and lateral hop testing distance had a significant increase.

A significant increase in the feed-forward activation of peroneus longus and medial gastrocnemius was seen (p≤0.05), but there were no significant changes at the feed-forward activation of tibialis anterior (p<0.05).

Discussion & conclusions: Plyometric training by changing the feed-forward activation of peroneus longus and medial gastrocnemius muscles, improved lower extremity performance in patients with functional ankle instability and should be incorporated into rehabilitation programs for those with functional ankle instability.

Keywords: Functional ankle instability, Electromyography, Feed-forward activation, Performance
Full-Text [PDF 548 kb]   (334 Downloads)    
Type of Study: Research | Subject: Physical Education
Received: 2016/09/1 | Accepted: 2016/10/30 | Published: 2017/07/3
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Momeni S, Barati A, Letafatkar A, Jamshidi A, Hovanlo F. The Effects of Plyometric Training on Performance and the Feed-forward Activation of Calf Muscles in Active Females with Functional Ankle Instability in Single Leg Drop Landing. sjimu. 2017; 25 (2) :42-54
URL: http://sjimu.medilam.ac.ir/article-1-3776-en.html
Volume 25, Number 2 (7-2017) Back to browse issues page
مجله علمی پزوهشی دانشگاه علوم پزشکی ایلام scientific journal of ilam university of medical sciences
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