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  • The relationship between limb length and lower-limb explosive power on squat-style long jump performance in junior secondary students

    Karina Octaviani1, Siti Nurrochmah2
    1. State University of Malang , ID
    2. State University of Malang , ID
    2025-07-01
    doi https://doi.org/10.56003/pessr.v4i2.561
    Published Online: 01 July 2025
    |
    page 103-114
    Abstract

    Background: To determine the relationship between leg length and leg muscle explosive power with squat style long jump performance applied to junior high school students.

    Objectives: This study examines the relationship between leg length, leg muscle explosive power, and the ability to jump squatting style long.

    Methods: The method used is a quantitative descriptive design with a correlational study. The study population amounted to 60 male students in class VIII. Sampling using the Purposive Proportional Systematic Random Sampling technique amounted to 45 students. The collected data were analyzed using three prerequisite tests: data normality test, homogeneity test, and linearity test. After fulfilling the prerequisite test requirements, it can be continued with 4 hypothesis tests, product moment test, multiple correlation test, regression equation line, and practical contribution and relative contribution.

    Results: The data obtained using inferential statistics in multiple correlation analysis is complemented by multiple regression analysis. The results of the multiple correlation test obtained a coefficient = 0.687 and Sig. P = 0.001 < a = 0.05.

    Conclusions: The study concludes a positive and linear relationship between leg length and leg muscle explosive power with squat-style long jump performance. Based on these findings, further research is recommended to explore additional variables such as speed, flexibility, and confidence, which may influence squat-style long jump performance.

    APA Citation Style
    Octaviani, K. , & Nurrochmah, S. (2025). The relationship between limb length and lower-limb explosive power on squat-style long jump performance in junior secondary students. Physical Education and Sports: Studies and Research, 103-114. https://doi.org/10.56003/pessr.v4i2.561

  • The relationship between arm length and body mass index (BMI) with turbo-throwing performance in elementary school students

    Awaliyah Riskyta Putri1, Siti Nurrochmah2
    1. State University of Malang , ID
    2. State University of Malang , ID
    2025-07-01
    doi https://doi.org/10.56003/pessr.v4i2.563
    Published Online: 01 July 2025
    |
    page 115-124
    Abstract

    Background: This research is motivated by insufficient scientific research that specifically examines the relationship between arm length and Body Mass Index (BMI) on turbo throwing performance in elementary school students, especially in preparation for the National Student Sports Olympics (O2SN).

    Objectives: This study examines the relationship between arm length and BMI and the turbo-throwing performance of sixth-grade students of State Elementary School Bunulrejo 1 Malang in preparation for the National Student Sports Olympics (O2SN) in 2025.

    Methods: The method used is a quantitative descriptive design with a correlational study. The study population comprised 71 male students, with a sample of 45 male students. The research instrument was a turbo-throwing basic motion performance test, arm length measurement, and Body Mass Index (BMI) measurement. The analysis technique uses inferential statistics in the form of multiple correlation analysis, which is complemented by multiple regression analysis.

    Results: The results were obtained using inferential statistics through multiple correlation analysis. The results of the multiple correlation test obtained a coefficient value = 0.723 and Sig. P = 0.001 < a = 0.05, and the contribution of the variable effectiveness of arm's length to turbo-throwing performance is 46.3%, while BMI is 5.9%, so the variables arm length and BMI provide an effective contribution of 52.2%.

    Conclusions: Arm length and BMI significantly influence turbo-throwing performance. Arm length is the most dominant factor. These results can be a reference for teachers and coaches when selecting O2SNs and coaching athletes at the basic education level. Future researchers are expected to examine other variables that have not been studied to provide a more comprehensive picture of turbo-throwing performance.

    APA Citation Style
    Putri, A. R. , & Nurrochmah, S. (2025). The relationship between arm length and body mass index (BMI) with turbo-throwing performance in elementary school students. Physical Education and Sports: Studies and Research, 115-124. https://doi.org/10.56003/pessr.v4i2.563

  • Associations of lower limb muscle strength and body reaction time with crescent kick performance in competitive pencak silat athletes

    Jery Setiawan1, Siti Baitul Mukarromah2
    1. State University of Semarang , ID
    2. State University of Semarang , ID
    2026-08-17
    doi https://doi.org/10.56003/pessr.v5i2.762
    Published Online: 17 August 2026
    |
    page 208-219
    Abstract

    Background: Crescent kick performance is an important technical component of competitive pencak silat and may be associated with physical capacities such as lower limb muscle strength and reaction time. However, evidence regarding the relationships of these physical characteristics with crescent kick performance remains limited.

    Objectives: This study aimed to examine the associations of lower limb muscle strength and body reaction time with crescent kick performance among competitive pencak silat athletes.

    Methods: This quantitative correlational study involved 30 competitive pencak silat athletes (age: 19.8 ± 2.1 years; height: 168.4 ± 6.3 cm; body mass: 61.7 ± 8.2 kg; body mass index: 21.7 ± 2.3 kg/m²) recruited using total sampling. Lower limb muscle strength was assessed using a leg dynamometer, body reaction time using a reaction timer, and crescent kick performance using a 10-second crescent kick test. Data were analyzed using descriptive statistics, Pearson correlation, and multiple correlation analysis, with statistical significance set at p < .05.

    Results: Lower limb muscle strength was positively associated with crescent kick performance (r = 0.734, p < .001), whereas body reaction time was negatively associated with crescent kick performance (r = -0.739, p < .001), indicating that shorter reaction times were associated with better kick performance. Multiple correlation analysis showed a strong combined association of lower limb muscle strength and body reaction time with crescent kick performance (R = 0.754, R² = 0.568, p < .001). Together, these variables accounted for 56.8% of the variance in crescent kick performance.

    Conclusions: Greater lower limb muscle strength and shorter body reaction time were associated with better crescent kick performance among competitive pencak silat athletes. These findings highlight the relevance of muscular strength and neuromuscular responsiveness to crescent kick performance and may inform physical conditioning programs for pencak silat athletes. Further studies with larger samples and additional biomechanical, physiological, and technical measures are needed to better understand the factors associated with crescent kick performance.

    APA Citation Style
    Setiawan, J. , & Mukarromah, S. B. (2026). Associations of lower limb muscle strength and body reaction time with crescent kick performance in competitive pencak silat athletes. Physical Education and Sports: Studies and Research, 208-219. https://doi.org/10.56003/pessr.v5i2.762
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