Introduction: Tae Kwon Do is the art of using hands and feet to defend what is now modern sports world has become [1]. It is very important for training plan that which muscles are more active in different kicks. Therefore, the current study aimed to analysis lower extremity muscle activities in different techniques, to find out relationship between muscle activities in different kicks to examine the effects of each muscle to improve training performance [2]. Methods: Nineteen professional Taekwondo players volunteers participated in the study (Age of 26 years, height of 175 cm, and weight of 67). Six common kicks (Ap Chagi, Dollyo Chagi, Naeryeo Chagi, Pit Chagi, Bandal Chagi, Yeop Chagi were recorded at 200 Hz by 6 high speed camera (Vicon Industries Ltd., Hampshire, UK). The muscle activity of six muscles of both legs were recorded: the Vastus Medialis (VM), the Tibialis Anterior (TA), the Biceps Femoris (BF), the Semitendinosus (ST), the Gastrocnemius Medial (GM) and the Vastus Lateralis (VL). Results: Some kicks showed similar patterns of muscle activations throughout the phases. The BF demonstrated greater activation than other muscles. This was concomitant with an increased activation in VL, ST and BF in different kicks. When compared among the six kicks, VL, GM and VM showed greater activation than TA, BF and ST. Significant differences between kicks presented only in the activation time and amplitude. On the other hand, VL presented greater EMG pattern analogy in different kicks. Conclusions: As the kicks were classified into phases, our findings showed that the predominant activation of leg muscles depended on whether movement occurred primarily in the lower limb joints and the direction of the motion. The lift-off and preparation phases represented co-activation of GM and BF respectively. These results were in agreement with Luk and Hong (2000). Contact: Mohammad Ali Safaei: Department of Physical Education, Science and Research Branch, Islamic Azad University, Tehran, Iran ; Hamidreza Barnamehei: Department of Biomedical Engineering, Science and Research Branch, Islamic Azad University, Tehran, Iran
© Copyright 2020 19th International Symposium "Modern Science and Practice for Strength and Endurance Training" October 10-12, 2018. Julkaistu Tekijä Neuromuscular Research Center and Biology of Physical Activity, Faculty of Sport and Health Sciences, University of Jyväskylä. Kaikki oikeudet pidätetään. / Kääntänyt https://www.DeepL.com/Translator