초록

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Abstract ▼ AI-Helper

Vertical jump performance is regarded as a basic skill in volleyball, basketball, and other sports and a reliable measure of lower limb muscle power. Therefore, accurate vertical jump height measuring methods have been studied. The purpose of this study were to compare the vertical jump heights of t...

Vertical jump performance is regarded as a basic skill in volleyball, basketball, and other sports and a reliable measure of lower limb muscle power. Therefore, accurate vertical jump height measuring methods have been studied. The purpose of this study were to compare the vertical jump heights of three-dirnensional video method and ground reaction force (GRF) methods, to analyze the causes of calculated height difference, and to suggest a practical biornechanical theory education method. Jump heights of video method were statistically higher (p<.001) than those of impulse method and flight time method. The causes of difference seemed mainly from the fact that impulse was used to move jumper into the horizontal direction as well as vertical direction Other important components for accurate height calculation are jumper's mass, instance of jump motion initiation, sampling frequency and threshold value of GRF data collection Vertical jump height calculation with GRF data showed an example of practical application of biomechanical theory to human movement and demonstrated a way of GRF equipment use for effective biomechanical theory education.

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