Background and Study Aim: Taekwondo (TKD) is a combat sport in which leg techniques are predominant. Roundhouse ( bandal chagi ) is one of the kicking techniques commonly used in competition. Evaluate and monitoring the power and accuracy of each blow is crucial for training process. Sports scientists and coaches have used the countermovement jump to evaluate the strength and power of lower limbs muscles. However, it is not a specific taekwondo test. Therefore, it was interesting to compare kick and jump performance in order to show the importance of monitoring training by specifics tests. The purpose of this study was to correlate the countermovement jump performance with the roundhouse kick performance in TKD athletes. It was hypothesized that there will not be an elevated correlation between them.

Material and Methods: Thirty-one taekwondo athletes (18 males and 13 females), following familiarization procedures, performed three countermovement jumps and after about 10 minutes, three roundhouse kicks. Tests were performed in similar contact mats. There was an armoured inertial sensor inside a specific taekwondo racket.

Results: There was a strong, positive and significant correlation between tests for group (r = 0.771, p<0.001). The correlation to females was moderate (r = 0.556, p<0.05) and not significant to males (r = 0.421, p = 0.082). The r² value for group, females and males were 0.594, 0.309, and 0.177, respectively.

Conclusions: Once speed kick test is more specific, we suggest that it might be better to monitoring the athletes’ performance by this test. The inertial sensor developed to this study is a simple and good way to monitoring the speed kick performance