Purpose: This study was to investigate the effects of static stretching with different frequency vibration training on flexibility, power, and agility of senior high school soccer players after 3 and 6 weeks training. Methods: Thirty six trained senior high school male soccer players participated in this study. Subjects were tested sit and reach, vertical jump and T test before training, then, randomly assigned to high frequency vibration (HFV, n=12), low frequency vibration (LFV, n=12) and control (CON, n=12) groups. Before the specialized physical fitness training, HFV performed high frequency vibration training (1.5 mm, 50 Hz), LFV performed low frequency vibration training (1.5 mm, 25 Hz) and CON performed static stretching only. Sit and reach, vertical jump and T test were tested post to 3 and 6 weeks training. Statistical analysis of ANCOVA was applied, statistical significance set at α =.05. Results: This study indicated that only HFV significant increase in sit and reach after 3 weeks training. The performance of HFV and LFV in sit and reach and vertical jump test were significantly higher than CON (p < .05), however, no significant difference was observed in T test between groups after 6 weeks training. Conclusions: The findings suggested that 6 weeks static stretching with vibration training (50 and 25 Hz) could significantly promote the performance of flexibility and power, but no significant improvement was evidenced in agility. Additionally, vibration training with high frequency (50 Hz) could enhance the performance of flexibility within 3 weeks that will enhance training efficiency.
Purpose: This study was to investigate the effects of static stretching with different frequency vibration training on flexibility, power, and agility of senior high school soccer players after 3 and 6 weeks training. Methods: Thirty six trained senior high school male soccer players participated in this study. Subjects were tested sit and reach, vertical jump and T test before training, then, randomly assigned to high frequency vibration (HFV, n=12), low frequency vibration (LFV, n=12) and control (CON, n=12) groups. Before the specialized physical fitness training, HFV performed high frequency vibration training (1.5 mm, 50 Hz), LFV performed low frequency vibration training (1.5 mm, 25 Hz) and CON performed static stretching only. Sit and reach, vertical jump and T test were tested post to 3 and 6 weeks training. Statistical analysis of ANCOVA was applied, statistical significance set at α =.05. Results: This study indicated that only HFV significant increase in sit and reach after 3 weeks training. The performance of HFV and LFV in sit and reach and vertical jump test were significantly higher than CON (p < .05), however, no significant difference was observed in T test between groups after 6 weeks training. Conclusions: The findings suggested that 6 weeks static stretching with vibration training (50 and 25 Hz) could significantly promote the performance of flexibility and power, but no significant improvement was evidenced in agility. Additionally, vibration training with high frequency (50 Hz) could enhance the performance of flexibility within 3 weeks that will enhance training efficiency.