| （1.Graduate School，Beijing Sport University，Beijing 100084，China； 2.School of Education，Beijing Sport University，Beijing 100084，China） Abstract: By using a 3D force measurement platform (Kistler) and an infrared light sport automatic capture system (Qualisys-MCU500), the authors run arms-swinging vertical jumping and head-held vertical jumping tests respec-tively on 9 layers in the men’s volleyball team of Beijing Sport University, and revealed the following findings: the maximum force measured in the process of arms-swinging vertical jumping and stretching was greater than the maximum force measured in the process of head-held vertical jumping, but the gradient of stretching force in the second half period did not increase significantly as a result of the extension of the second half period of stretching; the maximum ground impact force at landing was irrelevant to vertical jumping height; the impulse of arms-swinging vertical jumping was greater than the impulse of head-held vertical jumping, but from the research results it was found that there was no significant correlation between vertical jumping height and impulse.
Key words: sports mechanics；head-held vertical jumping；arms-swinging vertical jumping；volleyball player |
