Penerapan Hukum Newton dalam Menghitung Sudut Efektif pada Gerakan Bench Press
Abstract
Bench press is a form of powerlifting exercise that aims to increase the strength and endurance of the muscles of the upper body, that is, the muscles of the chest, arms, and shoulders. The characteristic of the bench press exercise is to lift or push the weight using both hands in a supine position. The purpose of this research is to determine the effective angle required for lifting weights with the least amount of thrust (biomechanics aspects). The research steps were carried out in four stages, namely: first, designing biomechanics mathematical equations; second, experiments on people doing bench press movements; third, processing biomechanics data; and fourth, analysis and discussion of biomechanics data. According to the study's findings, an effective angle was obtained by analyzing the thrust to lift the barbell, that is, the angle flanked by the upper and lower arms, which is approximately 89°-114° for those who use the smallest thrusts on the grip: 0.4 m, 0.5 m, and 0.6 m. It can be concluded that the wider the distance between the grips, the greater the thrust required.
Downloads
References
[2] P. M. Ferland and A. S. Comtois, “Classic powerlifting performance: A systematic review,” J. Strength Cond. Res., vol. 33, pp. S194–S201, 2019, doi: 10.1519/JSC.0000000000003099.
[3] S. Larsen, O. Gomo, and R. van den Tillaar, “A Biomechanical Analysis of Wide, Medium, and Narrow Grip Width Effects on Kinematics, Horizontal Kinetics, and Muscle Activity on the Sticking Region in Recreationally Trained Males During 1-RM Bench Pressing,” Front. Sport. Act. Living, vol. 2, no. January, 2021, doi: 10.3389/fspor.2020.637066.
[4] J. Kompf and O. Arandjelović, “The Sticking Point in the Bench Press, the Squat, and the Deadlift: Similarities and Differences, and Their Significance for Research and Practice,” Sport. Med., vol. 47, no. 4, pp. 631–640, 2017, doi: 10.1007/s40279-016-0615-9.
[5] N. K. Sakti, “Pengaruh Latihan Machine Dan Free Weight Bench Press Terhadap Kekuatan Otot Lengan,” Universitas Negeri Semarang, Semarang, 2014.
[6] J. . Gabriel, Fisika Kedokteran. Jakarta: Penerbit Buku Kedokteran EGC, 1996.
[7] A. R. E. S. Nasher, Y. E. Prawatya, and R. Rahmawati, “Pengukuran Postur Kerja Pada Penggunaan Alat Olahraga Angkat Beban Dengan Pendekatan Biomekanika Dan Fisiologi,” J. TIN Univ. Tanjungpura, vol. 4, no. 2, pp. 239–249, 2020.
[8] P. A. Tipler, Fisika Untuk Sains dan Teknik. Jakarta: Erlangga, 1998.
[9] F. J. Bueche and E. Hecht, Fisika Universitas Edisi Kesepuluh. Jakarta: Erlangga, 2006.
[10] Sutrisno, Fisika Dasar : Mekanika. Bandung: Penerbit ITB, 1997.
[11] B. M. E. Jati and T. K. Priyambodo, Fisika Dasar Edisi 2 untuk Mahasiswa dan Ilmu-Ilmu Eksakta Teknik dan Kedokteran. Yogyakarta: Penerbit ANDI, 2013.
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.