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Journal : Jurnal PORKES

Adaptasi Muskuloskeletal Atlet Asli NTT: Perspektif Biomekanik Louk, Michael Johannes Hadiwijaya; Runesi, Salmon; Utomo, Andy Widhiya Bayu; Siagian, Fera Ratna Dewi; Neolaka, Erwin Sarnoto
Jurnal Porkes Vol 8 No 1 (2025): PORKES
Publisher : Universitas Hamzanwadi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29408/porkes.v8i1.29951

Abstract

This study aims to examine the musculoskeletal adaptations of indigenous athletes from East Nusa Tenggara (NTT) from a biomechanical perspective. NTT athletes exhibit unique biomechanical characteristics influenced by environmental factors and habitual physical activity from an early age. This study employs a quantitative approach using experimental biomechanics analysis. The research subjects consist of local NTT athletes compared to national athletes in various biomechanical parameters, including bone mineral density (BMD) and ground reaction force (GRF). The results indicate that NTT athletes have higher BMD, particularly in the tibia and femur, demonstrating structural adaptations to repetitive mechanical loading. Additionally, the vertical GRF of NTT athletes is lower during the landing phase, suggesting a more efficient biomechanical strategy for impact absorption. These adaptations contribute to enhanced performance and physical endurance. This study provides new insights into sports biomechanics and can be utilized to design more tailored training programs for athletes in similar regions.
Analisis Biomekanika Gerak Anggota Tubuh Atas pada Jump Servis dan Spike dalam Permainan Bola Voli Runesi, Salmon; Louk, Michael Johannes Hadiwijaya; Fufu, Ronal Dwi Ardian; Siagian, Fera Ratna Dewi; Neolaka, Erwin Sarnoto; Huwae, Joppi
Jurnal Porkes Vol 8 No 3 (2025): December: Article in Progress
Publisher : Universitas Hamzanwadi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29408/porkes.v8i3.32378

Abstract

This research was conducted in March–May 2025 at Nusa Cendana University (UNDANA), Kupang, with the aim of analyzing the biomechanics of upper limb movements in two basic volleyball techniques, namely jump serve and spike. This research began from the importance of understanding biomechanics in improving performance while preventing shoulder and elbow injuries in university volleyball athletes. The research method used a quantitative descriptive approach with a high-speed video-based motion analysis technique (240 fps) analyzed using Kinovea software. The research sample consisted of 20 volleyball athletes from UKM UNDANA (10 male and 10 female) selected by purposive sampling. Parameters included joint angles, arm swing speed, and upper body segment momentum. The results showed that the optimal shoulder angle in the spike (165° ± 4.1) was greater than the jump serve (155° ± 3.6), with a higher arm swing speed in the spike (18.2 m/s ± 1.3) than the serve (14.5 m/s ± 1.1). The arm momentum value for the spike (7.8 kg·m/s ± 0.9) was also greater than the serve (6.2 kg·m/s ± 0.7). An independent t-test showed a significant difference (p < 0.05) in these three parameters. In conclusion, the spike exerted greater shoulder tension, a more explosive swing speed, and greater momentum than the jump serve. These results suggest that coaches should design exercises that synchronize movement and strengthen the shoulder muscles.