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All Journal Journal of Coaching and Sports Science Indonesian Journal of Sport Science and Technology (IJST)
Sauqi Sawa Bikalawan
Universitas Negeri Surabaya
Humanities Biochemistry, Genetics & Molecular Biology Education Health Professions Public Health Social Sciences

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Biomechanical Analysis of Table Tennis Racket Performance Using Makassar Ebony Veneer: A Comparative Study Wachid Sugiharto; Nurhasan Nurhasan; Dwi Cahyo Kartiko; Muchamad Arif Al Ardha; Sauqi Sawa Bikalawan; Sheva Edhu Wigraha; Jay Mark Arbaan
Journal of Coaching and Sports Science Vol. 4 No. 1 (2025): Journal of Coaching and Sports Science
Publisher : CV. FOUNDAE

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58524/jcss.v4i1.724

Abstract

Background: A racket's performance in controlling trajectory and manipulating the speed of the ball is greatly influenced by its structural characteristics and materials. The material of the table tennis racket can affect its performance, reducing the speed and control of the ball.Aims: The main objective of this research is to analyze the biomechanical performance of the Garuda Unesa Speed (GUS) table tennis racket made from Makassar ebony veneer as the main material and to compare its attributes, particularly speed and control, with those of high-end commercial rackets.Methods: This study applies a comparative design by comparing two types of rackets in table tennis. Two-dimensional kinematics analysis was also conducted using Kinovea software.Result: Based on the t-test results with a non-parametric path, all variables showed a significant difference with a p-value of 0.01 (Sig < 0.05). However, one variable did not show a significant difference, namely the velocity variable, with a p-value of 0.05 (Sig < 0.05). If examined from the average value, the speed variable has a slight difference (a difference of 0.5). The average speed data shows that the Makassar ebony wood veneer racket has better speed.Conclusion: Based on the results of biomechanical analysis, the reflection of the Makassar ebony wood veneer racket makes a good contribution to the speed and control of the table tennis racket. This finding has practical implications for designing an effective table tennis athlete smash and block game by utilizing the speed and control of a table tennis racket using Makassar ebony wood veneer.
Analisis Akurasi Smartwatch sebagai Instrumen Pengukuran Denyut Nadi Maksimal dalam Pembelajaran PJOK Alvin Afandi; Labib; Ria Rizki Puspanegari; Sauqi Sawa Bikalawan
Indonesian Journal of Sport Science and Technology (IJST) Vol. 5 No. 1 (2026): Indonesian Journal of Sport Science and Technology (IJST)
Publisher : Universitas PGRI Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31316/ijst.v5i1.9968

Abstract

Integrasi teknologi wearable dalam Pendidikan Jasmani (PJ) menawarkan solusi pragmatis untuk pemantauan fisiologis massal, namun validitas smartwatch fotoplethysmography (PPG) untuk mengukur denyut jantung maksimal (HRmax) selama tes lapangan intensitas tinggi yang autentik pada remaja masih kurang diteliti. Studi ini bertujuan untuk mengevaluasi validitas konkuren smartwatch PPG komersial terhadap strap dada elektrokardiografi (EKG) (Polar H10). Desain kuantitatif deskriptif-komparatif digunakan, melibatkan tiga puluh siswa SMA laki-laki sehat yang melakukan Tes Kebugaran Multistage (Tes Beep) untuk mendapatkan HRmax. Data dikumpulkan secara simultan oleh dua pengamat independen. Polar H10 menghasilkan HRmax rata-rata 186,4 ± 8,2 bpm, sedangkan smartwatch mencatat 184,1 ± 9,5 bpm. Normalitas dikonfirmasi melalui Shapiro-Wilk (p > 0,05). Korelasi Pearson menunjukkan hubungan positif yang sangat kuat antara perangkat (r = 0,914, p = 0,000). Uji t sampel berpasangan mengungkapkan perbedaan yang signifikan secara statistik (p = 0,03), dengan smartwatch meremehkan HRmax dengan perbedaan rata-rata 2,3 bpm. Meskipun signifikan secara statistik, perbedaan marginal ini jauh di bawah ambang batas <5 bpm yang ditetapkan untuk kesepakatan yang dapat diterima dalam validasi perangkat wearable. Akibatnya, smartwatch PPG menunjukkan validitas praktis yang tinggi untuk menilai HRmax dalam pengaturan pendidikan jasmani berbasis sekolah, memberdayakan pendidik untuk mengganti palpasi manual yang mengganggu dan tali dada yang mahal dengan alat yang mudah diakses dan andal untuk menentukan intensitas latihan.
Co-Authors Alvin Afandi Dwi Cahyo Kartiko Jay Mark Arbaan Labib Muchamad Arif Al Ardha Nurhasan Nurhasan Ria Rizki Puspanegari Sheva Edhu Wigraha Wachid Sugiharto