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All Journal JSES : Journal of Sport and Exercise Science Tanjungpura Journal of Coaching Research
Kristiono, Aljawahir Agus
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What is the relationship between body mass index and reaction speed in PPLOP boxing athletes in Central Java? Islam, Syahrizal; Husein, Muhamad; Abadi, Akabar Kusuma; Pratama, Okky Putra Alwin; Nubatonis, Jefrio Demitrimus; Kristiono, Aljawahir Agus; Dewi, Indah Sari; Wijaya, Muhammad Budi; Salacup, Vince Louisse D.
Tanjungpura Journal of Coaching Research Vol 2, No 2 (2024): Tanjungpura Journal of Coaching Research
Publisher : Universitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/tajor.v2i2.79361

Abstract

Background and Study Aim. Boxing requires an optimal balance between body weight and reaction speed. Body Mass Index (BMI) is a common measure used to assess body composition. For boxers, maintaining weight within the optimal range is crucial for peak performance. Additionally, reaction speed is a key skill in boxing; the ability to quickly respond to an opponent’s moves can significantly impact match outcomes.Material and Methods. This cross-sectional study utilized quantitative data analysis. Primary data included body weight, height, and reaction speed from a sample of 12 PPLOP Central Java boxing athletes. Data normality was assessed using the Shapiro-Wilk test, while the linearity test evaluated whether the relationships between variables were linear. Bivariate correlation tests were conducted. The study used Body Mass Index and Hand Touch Reaction tests with validity levels of 0.98 and 0.323, respectively, for measuring body weight, height, and reaction speed.Results. There is a relationship between body weight and reaction speed with a sig value of .003 <0.05 with a negative relationship direction. 2. there is no relationship between height and reaction speed with a sig value of (0.798>0.05) with a negative relationship direction, 3. there is a relationship between body mass index and reaction speed with a sig value of .001 <0.05 with a negative relationship directionConclusion. Based on the results of the study it can be concluded that there is a linear relationship between body weight and reaction speed, there is no linear relationship between height and reaction speed and there is a linear relationship between body mass index and reaction speed.
The Relationship between Mental Toughness and Anxiety in Athletes: A Meta-Analysis Study Islam, Syahrizal; Husein, Muhamad; Hasan, Baharuddin; Muti, Gilang Gemilang; Muti, Nabella Salsabila; Lembang, Melyani Taruk; Nubatonis, Jefrio Demitrimus; Kristiono, Aljawahir Agus; Taiar, Redha; Salacup, Vince Louisse D.
JSES : Journal of Sport and Exercise Science Vol. 8 No. 2 (2025): September
Publisher : Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/jses.v8n2.p161-177

Abstract

Purpose: This study was motivated by the importance of the role of psychological aspects, especially mental toughness, in supporting athletes' abilities when facing anxiety in a match. Materials and Methods: This study used a meta-analysis method. The search used the Publish and Publish application, with Google Scholar as the database. Literature searches from various sources used the keywords: "Mental Toughness", "Athlete Anxiety", "Competitive Anxiety", "Performance Anxiety", and "Sports Psychology". Five hundred eighteen articles were obtained, which were then filtered based on inclusion and exclusion criteria, and 23 articles were analyzed. Result: The results of the analysis show a negative relationship in the moderate category between mental toughness and competitive anxiety, with rRE = -0.320 (z = -3.030; p < 0.002; 95% CI: -0.113 to -0.528). Egger's test showed no publication bias (p = 0.748 > 0.05). Conclusion: These findings suggest that increased mental toughness is negatively associated with athletes' levels of competitive anxiety. In other words, the higher an athlete's level of mental toughness, the lower their anåxiety levels during competition. This research suggests that coaches and sports psychologists are crucial to integrating psychological practices, such as goal setting, positive self-talk, and imagery, into athletes' training programs. This approach can help improve mental toughness and reduce athletes' anxiety during competition.
Co-Authors Abadi, Akabar Kusuma Hasan, Baharuddin Husein, Muhamad Indah Sari Dewi Islam, Syahrizal Lembang, Melyani Taruk Muti, Gilang Gemilang Muti, Nabella Salsabila Nubatonis, Jefrio Demitrimus Pratama, Okky Putra Alwin Salacup, Vince Louisse D. Taiar, Redha Wijaya, Muhammad Budi