The Effect of Arm Muscle Strength, Forward Torsion Flexibility And Wrist Flexibility On Smash Ability

Fery Ashari; Wahyudin; Poppy Elisano Arfanda; Nukhrawi Nawir; Muh. Adnan Hudain

doi:10.26858/cjpko.v17i3.231

Authors

Fery Ashari Universitas Negeri Makassar Author
Wahyudin Universitas Negeri Makassar Author
Poppy Elisano Arfanda Universitas Negeri Makassar Author
Nukhrawi Nawir Universitas Negeri Makassar Author
Muh. Adnan Hudain Universitas Negeri Makassar Author

DOI:

https://doi.org/10.26858/cjpko.v17i3.231

Keywords:

kekuatan otot lengan, kelentukan togok, kelentukan pergelangan tangan, smash, bulutangkis

Abstract

This study aims to examine the effect of arm muscle strength, forward trunk flexibility, and wrist flexibility on smashing ability in badminton extracurricular students at the UPT SPF SDI Unggulan BTN Pemda. This study also analyzes the relationship between independent variables to understand the interaction patterns that occur in the context of smashing ability in badminton. This study used a quantitative approach with a cross-sectional design and path analysis techniques. The study sample consisted of 20 badminton extracurricular students selected using a purposive sampling technique. The research instruments included a Push and Pull (expanding) Dynamometer to measure arm muscle strength, a Sit and Reach test for forward trunk flexibility, a goniometer for wrist flexibility, and a smash accuracy and speed test to measure smashing ability. Data were analyzed using descriptive analysis and path analysis with SPSS version 25 software. Prerequisite tests included the Shapiro-Wilk normality test, linearity test, and multicollinearity test with a significance level of α = 0.05. The results of the study showed that the average arm muscle strength was 11.95 (SD=2.39), forward trunk flexibility was 14.35 (SD=2.98), wrist flexibility was 10.60 (SD=1.76), and smash ability was 6.70 (SD=1.30). All variables were normally distributed (p>0.05) and had a linear relationship. The results of the regression test showed: (1) arm muscle strength had a significant effect on smash ability (R²=0.962; t=6.134; p=0.000); (2) forward trunk flexibility had a significant effect on smash ability (R²=0.962; t=2.127; p=0.004); (3) wrist flexibility had a significant effect on smash ability (R²=0.962; t=0.633; p=0.003); (4) arm muscle strength significantly influences wrist flexibility (R²=0.965; t=3.049; p=0.007); and (5) forward trunk flexibility significantly influences wrist flexibility (R²=0.965; t=3.455; p=0.003). There is a significant direct influence of arm muscle strength (96.2%), forward trunk flexibility (96.2%), and wrist flexibility (96.2%) on the smash ability of extracurricular badminton students. In addition, a direct influence of arm muscle strength (96.5%) and forward trunk flexibility (96.5%) on wrist flexibility was found. The results of this study emphasize the importance of developing an integrated physical training program to improve smash ability, with a focus on strengthening arm muscles, increasing trunk flexibility, and optimizing wrist mobility as physical components that interact with each other in supporting optimal smash technique performance.

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