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All Journal Physical Education and Sports: Studies and Research
Siti Nurrochmah
State University of Malang
Education

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Development and validation of a table tennis serve skill assessment instrument for junior high school students: A psychometric approach Muhammad Aliffajaruddin Alfani; M. E. Winarno; Siti Nurrochmah
Physical Education and Sports: Studies and Research Vol. 4 No. 2 (2025): Physical Education and Sports: Studies and Research
Publisher : CV Rezki Media

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56003/pessr.v4i2.525

Abstract

Background: The highest assessment weight in physical education lessons lies in psychomotor skills. In order to find out how far the competencies possessed by students, a clear and comprehensive assessment tool or instrument is needed. Objectives: The research aims to develop a test instrument for forehand and backhand service skills in table tennis small ball games. Methods: The development of this instrument uses a research and development scheme, with predetermined steps (1) determining objectives, (2) analyzing literature, (3) developing specifications, (4) administering, (5) conducting tests, (6) analyzing data validity, reliability, and objectivity. The cluster sampling procedure was conducted on students aged 13-15 who met the inclusion criteria, involving junior high school students (n=80), consisting of 41 female students and 39 male students. Data were analyzed using IBM SPSS Statistics version 11.0. The basis for decision-making is the Pearson correlation test. The analysis technique in the reliability test uses a test and retest external estimation approach. Results: The forehand serve variable has a calculated r-value of 0.456> r-table 0.312, and the backhand serve variable obtained a calculated R-value of 0.352> r-table 0.312, so the table tennis skill instrument on that variable was declared valid. At the same time, the reliability test shows a value above 0.70; the instrument that has been prepared can be declared reliable. Conclusions: The assessment instrument for forehand and backhand serve skills in table tennis games for junior high school students has met the validity and reliability criteria. This shows that the instrument is suitable for teachers as an objective and consistent measuring tool in evaluating basic table tennis skills in students. Recommendations for future studies are encouraged to expand the sample size and integrate digital features to enhance the scalability and objectivity of the assessment.
The relationship between limb length and lower-limb explosive power on squat-style long jump performance in junior secondary students Karina Octaviani; Siti Nurrochmah
Physical Education and Sports: Studies and Research Vol. 4 No. 2 (2025): Physical Education and Sports: Studies and Research
Publisher : CV Rezki Media

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56003/pessr.v4i2.561

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.
The relationship between arm length and body mass index (BMI) with turbo-throwing performance in elementary school students Awaliyah Riskyta Putri; Siti Nurrochmah
Physical Education and Sports: Studies and Research Vol. 4 No. 2 (2025): Physical Education and Sports: Studies and Research
Publisher : CV Rezki Media

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56003/pessr.v4i2.563

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.
Co-Authors Awaliyah Riskyta Putri Karina Octaviani M. E. Winarno Muhammad Aliffajaruddin Alfani