Examination of Countermovement Jump Performance Changes in Collegiate Female Volleyball in Fatigued Conditions

Paul T. Donahue,Ayden K. Mcinnis, Madelyn K. Williams, Josey White

JOURNAL OF FUNCTIONAL MORPHOLOGY AND KINESIOLOGY(2023)

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摘要
The purpose of this investigation was to examine changes in countermovement vertical jump performance after a single sport-specific training session in a sample of collegiate female volleyball athletes. Eleven NCAA Division I volleyball athletes performed countermovement vertical jumps with and without an arm swing prior to and immediately after a sport-specific training session. Each participant completed two jumps in each condition using a portable force platform. Paired samples t-tests were performed within each jump condition. When using an arm swing, mean braking force was the only variable to display a statistically significant change (p < 0.05). In the no-arm-swing condition, mean propulsive force, propulsive net impulse, jump height and reactive strength index modified all statistically increased (p < 0.05). Time to takeoff was statistically reduced (p < 0.05). Additionally, a single-subject analysis was performed across all eleven participants resulting in general trends seen in the no-arm-swing condition, whereas the arm-swing condition displayed inconsistent findings across participants.
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关键词
countermovement jump,athlete monitoring,force-time curve
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