2026 Volume 4 Issue 1 Pages 55-61
Objective: Injuries in volleyball often occur during jump landing. Greater vertical ground reaction force (vGRF) during jump landing is one of the risk factors for ankle sprains and anterior cruciate ligament injuries. While experienced players typically achieve higher spike jump heights, no differences in vGRF have been observed between experience levels. Additionally, vGRF is positively correlated with landing sound. Quieter landing is associated with greater lower limb joint displacement. We compared the landing sound and mechanics during spike jump landing between inexperienced and experienced players.
Methods: Twenty male university students (inexperienced, n＝10; experienced, n＝10) participated in this study. After measuring maximum spike jump height, they performed spike jumps at that height and landed on both feet. Landing sound was measured using a smartphone application (Sonic Tools SVM, Rokki Systems). Knee and ankle joint angles during jump landing were analyzed using software (Tracker 6.2.0, Open Source Physics). Group differences in jump height, landing sound, and joint angles were compared using t-tests, and correlations between landing sound and joint angles were analyzed using Pearson correlation coefficients (p<0.05).
Results: In experienced players, landing sound was significantly negatively correlated with maximum ankle dorsiflexion. For maximum knee flexion and knee angular displacement, negative correlations were observed, although they are not statistical significance.
Conclusion: Our findings suggest that volleyball experience may enhance the ability to absorb impact during spike jump landing. Instructing players to increase ankle dorsiflexion during spike jump landing may help reduce landing sound.
