Search results

Search:
in the keywords: biomechanics of martial arts

Sort By:

Limit search:

The influence of effective distance on the impact of a punch – Preliminary Analysis

100%

Wąsik J., Ortenburger D., Góra T., Mosler D.

Physical Activity Review

2018

vol. 6

81-86

Introduction: Distance between competitors in fighting sports and their target have an influence on kinematics of motion and as an consequence, its effectiveness. Therefore, the aim of this study is to extent the knowledge about influence of effective distance affects velocity of an object after hit. Material and Methods: Analysis were performed based on captured data of a male competitor with black belt in taekwondo (age: 20 yrs., body mass: 65kg, height: 171 cm). During data capturing, he performed sport punch strike 3 times with his left upper limb, and 3 times with the right one. The target was a ping pong ball. Data capturing was performed in HML (Human Motion Lab). Results: Velocities of sport punch strike were in range from 6.20 -8.01 m/s. Significant increase in passed momentum to the object were in -between 1.12 -1.73 % of effective distance. However, when effective distance were in -between 3.70 -3.95%, there were significant decrease (nearly half) in velocity of hit object. Conclusions: Our findings allows to formulate assumptions for further analysis, which states, tha t when maximum velocity of a punch occurs closer to the moment of hitting a target ( ∆ d), the higher it will be in a moment of that hit (r=0.95; p<0.01). Therefore, it allows to assume, that the lower will be a value of ∆ d, the higher will be destructive f orce for target ( ∆ E)

Kinetics of the knife-hand strike used in power breaking in ITF Taekwon-do

88%

Wąsik J.

Physical Activity Review

2015

vol. 3

37-43

Description and analysis of a sports technique in terms of its compliance with the principles of biomechanics and with regard to the efficiency of a given technique form the basis for the technical aspect of a training process, which is supposed to result in enhancement of athletes’ sports performance level. The study was based on 6 ITF Taekwon-do (International Taekwon-do Federation) athletes (age 16.5±0.7 years; weight 64.1±7.0 kg; height 176.5±4.6 cm). The study relied on an Italian system called Smart-D, manufactured by BTS S.p.A., used for complex movement analyses. The system comprised six cameras reflecting infrared rays, which in real time located the markers fixed to the athlete’s body. In the present study the maximum velocity of the sonkal yop tearigi strike reached 13.00 ± 2.35 m/s. The velocity of the traditional fist strike seems to be lower. In this study the average maximum velocity was reached at the length of the arm being equal 92 % of the maximum length value. This length can be taken as the optimum value in this particular technique in order to achieve the maximum dynamics of the strike.

Refine search results

2 Physical Activity Review

1 2018

1 2015

2 Wąsik J.

1 Góra T.

1 Mosler D.

1 Ortenburger D.

Search results

The influence of effective distance on the impact of a punch – Preliminary Analysis

Kinetics of the knife-hand strike used in power breaking in ITF Taekwon-do