Author(s): WANG, H.H., TANG, H.T., Institution: NATIONAL TAIWAN SPORT UNIVERSITY, Country: TAIWAN, Abstract-ID: 272

INTRODUCTION:
Providing reaction and visual feedback during sports training has been shown to improve reactive performance. Velocity-based resistance training Resistance training has also been proven to enhance rapid strength. However, whether velocity-based resistance training with reaction and visual feedback is a more effective training method for elite athletes remains to be verified. The aim of the present study was to identify which of three training methods leads to the best training effects on sport performance in elite Taekwondo athletes.
METHODS:
Eight-teen elite taekwondo athletes were recruited and divided into free -weight resistance training group (FWRTG, n=6), velocity based resistance training group (VBRTG, n=6), VBRT with reaction and feedback group (VBRT-RFG, n=6). All subjects completing 6 weeks,3 times a week training program which consisted of 3-5 sets of 10-20repetitions. Intensity was 30-50%1RM. Mean propulsive velocity (MPV) were monitoring during VBRT and VBRT-RF. Beside, 15% and 20% of Velocity loss were standard for arranging longer rest periods or stopping training. Before and after training, velocity, power, RFD, kicking ability were collected for statistical analysis. Data of baseline and percentage of training effects among groups were analyzed with Analysis of Variance, ANOVA and Bonferroni post hos test. The Paired Samples t-Test was used to compare the difference between pre-test and post-test. The level of significance was set at α = .05.
RESULTS:
FWRTG showed a significant enhancement effects in MPV of 40%1RM, MPV of 50%1RM, height of three times CMJ, strength of three times kicks (p<.05). MPV of 30%1RM, MPV of 40%1RM, strength and velocity of three times kicks increase significantly in VBRTG (p<.05)。MPV of 30%1RM, MPV of 40%1RM, 50ms RFD, strength and velocity of three times kicks increase significantly in VBRT-RF (p<.05). Compare percentage of training effects among three groups found that MPV of 30%1RM of VBRTG was significantly higher than that of FWRTG.
CONCLUSION:
All three training methods can enhance the muscle strength of Taekwondo athletes. FWRT can strengthen the performance of heavier loads and longer movements, as well as the strength of kicks. VBRT and VBRTRF can enhance the performance of lighter loads and shorter movements, as well as the strength and velocity of kicks. Among the three training methods, only VBRT-RF has a significant enhancement effect on 50ms RFD. Besides, light load of MPV, VBRT-RF is the most efficient training method among the three training methods.