PHASE-SPECIFIC KINEMATIC AND KINETIC CHARACTERISTICS OF COUNTERMOVEMENT JUMP IN VOLLEYBALL PLAYERS

Section: Articles Published Date: 2026-01-23 Pages: 70-79 Views: 12 Downloads: 3

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Abstract

The purpose of this study was to analyze the biomechanical characteristics of vertical jump performance using three-dimensional motion capture technology. Squat jump and countermovement jump actions were examined in an elite athlete using STT Systems 3DMA (Motive 2023.0) at a sampling frequency of 120 Hz. Kinematic and kinetic parameters were assessed across three key phases: initial position, preparation phase, and lift-off phase. The results reveal phase-dependent joint coordination patterns, effective proximal-to-distal force transfer, and optimized center of gravity (CoG) behavior, which collectively explain the athlete’s high jump performance (540 mm). The findings provide objective biomechanical evidence relevant for performance diagnostics and training optimization.

Keywords

Vertical jump performance; three-dimensional motion capture; squat jump; countermovement jump; joint kinematics; kinetic chain; vertical impulse; elastic energy utilization; postural stability; sports biomechanics.