Biomechanics analysis on Jejag kick of pencak silat
Main Article Content
Keywords
Biomechanics, Jejag Kick, Pencak Silat
Abstract
The force in the pencak silat jejag kick is called the moment of force or torque. The force moment is a mea-sure of the force that can cause an object to rotate around the axis where the axis of rotation is located at the knee joint with the length of the calf as the length of the arm (the radius of the rotation axis). This research was conducted using laboratory biomechanical analysis. The research sample consisted of three male ath-letes of pencak silat. Previously, anthropometric measurements were carried out in the form of measuring calf length and calf muscle mass, then taking videos of athletes doing jejag kick movements in a static state with targets, which were then analyzed by kinovea. Research results showed that the technique of the jejag kick pencak silat produces a force called the moment of force or torque. Sample 1 produces a force moment of -12.00 Nm, sample 2 produces -5.53 Nm, and sample 3 produces -8.73 (negative sign means the direction of the pencak silat jejag kick is counterclockwise). The magnitude of the force moment is influenced by the angle of knee extension and the radius of the rotation axis. The amount of force moment affects the kick speed. In the speed of a movement, there is a tendency to keep moving, which is called the moment of inertia. The fasterthe movement, the greater the moment of inertia. The result is a force moment, influenced by the rotational kinetic energy that is owned and requires effort. Every effort is made to produce a force moment; it takes power to drive the effort. This means that the greater the angle of extension and the longer the calf, the greater the force moment, the faster the kick speed, and the greater the moment of inertia. This requires a large amount of rotational kinetic energy, effort, and power
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2. Błaszczyszyn M, Szczęsna A, Pawlyta M, et al. Kinematic analysis of Mae-Geri kicks in begin-ner and advanced Kyokushin karate athletes. Int J Environ Res Public Health. 2019; 16(17): 3155. https://doi.org/10.3390/ijerph16173155
3. Fernandes FM, Wichi RB, Da Silva VF, et al. Biomechanical methods applied in martial arts studies. J Morphol Sci. 2011; 28(3): 141–144.
4. Mattiello-Sverzut AC. The (un)standardized use of handheld dynamometers on the evaluation of muscle force output. Braz J Phys Ther. 2020; 24(1): 89–90. https://doi.org/10.1016/j.bjpt.2019.10.005
5. Muscolo, Caldwell, and Cannella. Multibody biomechanical analysis of taekwondo athletes. In Proceedings of the 8th ECCOMAS Thematic Conference on Multibody Dynamics. 2017, June. 799–804.
6. Pedzich W, Mastalerz A, and Sadowski J. Estimation of muscle torque in various combat sports. Acta Bioeng Biomech. 2012; 14(4): 107–112 . https://doi.org/10.5277/abb120412
7. Pietraszewska J, Struzik A, Burdukiewicz A, et al. Relationships between body build and knee joint flexor and extensor torque of polish first-division soccer players. Appl Sci. 2020; 10(3): 1–11. htt ps://doi.org/10.3390/app10030783
8. Sidhu JS. Anthropometric parameters and motor abilities among school children’s. Int J Physiol Nutr Phys Educ. 2018; 3(1): 366–369.
9. Francis PF, Toomey C, McCormack W, et al. Measurement of maximal isometric torque and muscle quality of the knee extensors and flexors in healthy 50 to 70 years old women. Clin Physiol Funct Imaging. 2017; 37(4): 448–455. htt ps://doi.o r g /10.1111/c pf.12332
10. Abe T, Kearns CF, and Fukunaga T. Sex differ-ences in whole body skeletal muscle mass mea-sured by magnetic resonance imaging and its distribution in young Japanese adults. Br J Sports Med. 2003; 37(5): 436–440. https://doi.org/10.1136/bjsm.37.5.436
11. Haq MZ, Arif T, and Nawaz MA. Angular kine-matics and physical fitness analysis of tall height and short height javelin throwers – a case study of the Islamia University of Bahawalpur, Pakistan. J Bus Soc Rev Emerg Econ. 2020; 6(2): 829–833. https://doi.org/10.26710/jbsee.v6i2.1255
12. Mejía JR. Kicking biomechanics: modeling and evaluating Taekwondo’s axe kick to assess possible knee injuries. Thesis. Universidad de Los Andes, 2015.
13. AhReum H, and So J. Kinematic and kinetic anal-ysis of Taekwondo Poomsae side kick according to various heights of the target. Korean J Sport Biomech. 2019; 29(3): 129–135.
14. Miziara IM, Da Silva BG, Marques IA, et al. Analysis of the biomechanical parameters of high-performance of the roundhouse kicks in Taekwondo athletes. Res Biomed Eng. 2019; 35(3–4): 193–201. ht t ps://doi.org /10.1007/s42600 -019-00022-1
15. Buśko K, and Nikolaidis PT. Biomechanical characteristics of Taekwondo athletes: kicks and punches vs. laboratory tests. Biomed Hum Kinet. 2018; 10(1): 81–88. htt ps://doi.org/10.1515/bh k-2018- 0013
16. Sarmet Moreira PV, Franchini E, Fernandes Ervilha U, et al. Relationships of the expertise level of taekwondo athletes with electromyo-graphic, kinematic and ground reaction force per-formance indicators during the dollyo chagui kick. Arch Budo. 2018; 14: 59–69.
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Published
Dec 9, 2022
Article Details
How to Cite
Rumi Iqbal Doewes, Gunathevan Elumalai, & Siti Hartini Azmi. (2022). Biomechanics analysis on Jejag kick of pencak silat. Journal of Population Therapeutics and Clinical Pharmacology, 29(04), 116–125. https://doi.org/10.47750/jptcp.2022.989
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