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All Journal Journal Coaching Education Sports Jurnal Penelitian Pendidikan Indonesia
Agung Nugroho
Sekolah Tinggi Olahraga dan Kesehatan Bina Guna, Indonesia
Education Other

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Development of a rhythmic gymnastics model to improve motor skills of students with mild special needs Agung Nugroho; Andri Arif Kustiawan; Nazwa Amalia
JPPI (Jurnal Penelitian Pendidikan Indonesia) Vol. 11 No. 4 (2025): JPPI (Jurnal Penelitian Pendidikan Indonesia)
Publisher : Indonesian Institute for Counseling, Education and Theraphy (IICET)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29210/020256665

Abstract

This study aims to develop rhythmic gymnastics learning model to improve gross motor skills of students with mild intellectual disabilities in special schools. The research employed a research and development (R&D) approach adapted from systematic development stages, including needs analysis, model design, expert validation, limited trials, revisions, and effectiveness testing. The subjects were 40 students with mild intellectual disabilities from special schools in Medan selected through purposive sampling. Data were collected using expert validation sheets, questionnaires, and gross motor skill tests administered through pretest and posttest. Quantitative data were analyzed using paired sample t-tests. The results showed a significant improvement in students’ gross motor skills after implementation of the model (p < 0.05). The model, characterized by simple, repetitive movements integrated with music, was found to be feasible, practical, and effective for supporting adaptive physical education learning.
A Locally Manufactured Laser Gate was Employed to Assess the Agility of College Volleyball Players. Muhammad Syaleh; Agung Nugroho; Muhammad Eka Mardyansyah Simbolon; Dzihan Khilmi Ayu Firdausi; Fredy Eko Setiawan
Journal Coaching Education Sports Vol. 7 No. 2 (2026)
Publisher : Program Studi Pendidikan Kepelatihan Olahraga Fakultas Ilmu Pendidikan Universitas Bhayangkara Jakarta Raya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31599/g0w1sm54

Abstract

Introduction: Agility is essential in volleyball. Accurate measurement helps identify talent, improve training, and reduce injury risk. However, common methods such as the T-agility test have limits in accuracy and practicality. Therefore, sensor-based technologies are developed to provide more objective and precise results. Objective: This study aims to create a low-cost and practical sensor system to measure volleyball agility. It focuses on developing a laser-based timing gate and evaluating its validity and reliability within a single session. Methodology: The participants were 25 collegiate volleyball players (age: 19.0 ± 0.88 years; height: 161.9 ± 7.19 cm; weight: 53.6 ± 9.15 kg). Each participant performed the T-test twice, and the average score was used for analysis. Intra-session reliability was assessed using the Intraclass Correlation Coefficient (ICC). Results: The laser timing system showed slightly faster results than the stopwatch in the first trial, slower results in the second, and overall faster average times across trials. Discussion: A low-cost laser-based agility system was successfully developed and tested against a manual stopwatch. The findings indicate acceptable validity and reliability. Faster times from the laser system are likely due to the removal of human reaction delays. This system is affordable, simple to use, and suitable as an alternative to expensive commercial timing devices, allowing wider access to objective performance measurement. Conclusions: The laser timing gate is a reliable and economical tool for assessing agility in volleyball players and is useful for research and training purposes.
Co-Authors Andri Arif Kustiawan Dzihan Khilmi Ayu Firdausi Fredy Eko Setiawan Muhammad Syaleh Nazwa Amalia Simbolon, Muhammad Eka Mardyansyah