Abstract: Objective: the study was designed to analyze the effect of different frequency vibration training (45Hz, 30Hz) on player’s core strength and stability in the hope of exploring new approaches for volleyball strength training, providing references for both the improvement of vibration training method and the development of physical strength training. Methods: the subjects were randomly divided into three groups, the control group (no additional vibration stimulation), 30Hz group, 45Hz group, the training time was 9 weeks. After the experiment, the core area strength was tested by the DAVID core strength test system, and the stability of the core area was tested by the eight stage abdominal bridge. Results: the backward extension strength, forward flexion strength, lateral bending strength, cyclotron strength, hip muscle strength and the stability test indexes of the core area of the experimental group increased more significantly than that of the control group; 45Hz group performed better than 30Hz group in the tests of backward extension strength, forward flexion strength, hip muscle strength and the stability. There is no significant difference in lateral bending strength and cyclotron strength between the 2 groups. Conclusion: vibration training can improve the core area strength and stability, 45Hz vibration frequency is more obvious in improving the core area flexor and extensor strength, hip muscle strength and the core area stability.

Key words: Vibration Training, Volleyball, Core Area Strength, Core Area Stability