THE KICK VELOCITY, THE POSITION OF THE CENTER OF GRAVITY OF THE BODY OF KARATE ATHLETE AND THEIR RELATIONS IN THE PERFORMANCE OF ASHI MAVASHI GERI

Kostovski Zarko & Redzepi Fadil

For the successful performance of the leg technique ashi mavashi geri it is necessary for the karate athlete to place the body correctly and as soon as possible to finish the kick in the head or other part of the opponent's body. The main goal of the research is to describe and determine the relations of the time-velocity parameters and the positions of certain parts of the body (foot, hip, knee, etc.) from the karate athlete who performs the technique. Six top athletes perform the technique in conditions: when the opponent is passive and when attacked by the opponent (diae). For all six respondents, one successful performance for the two variants is analyzed, which means that a total of 12 kicks of the technique ashi mavashi geri are analyzed. The performance of the technique is recorded with three digital cameras with a frequency of 60 Hz. Ariel Performance Analysis System (APAS) was used to analyze the kick, and then all the modules of the system were processed to obtain accurate information about the overall motion. When performing ashi mavashi geri, a maximum foot speed of 12.69 m / s was achieved, while the time from the starting position to the maximum foot speed was 0.42 seconds. The time taken to kick from the starting position to the end of the foot movement was 0.53 seconds. The knee angle, at maximum foot speed, reaches a mean value of 89.83 degrees, while the mean value of the knee angle at impact is 165.41 degrees. A higher value in the movement of the foot was achieved in the vertical direction (upward to 152.33 cm), while the center of gravity has a greater displacement value in the forward direction (17.4 cm). The velocity of the kick was in a negative relation with the increase in the angle of the hip joint when performing the ash mavashi geri, with a value of the coefficient of correlation of -0.61 (p <0.05). A positive correlation of 0.58 (p <0.05) was also achieved between the movement of the foot in the vertical direction (upward) and the angle in the hip. These values confirm that the velocity of the kick is greater when the trunk and the femur cover a smaller angle, that is, the trunk tends to have upright position with the leg.

Download Manuscrip

Image Gallery

OPEN ACCESS JOURNAL

This is an open access journal which means that all content is freely available without charge to the user or his/her institution. Users are allowed to read, download, copy, distribute, print, search, or link to the full texts of the articles in this journal without asking prior permission from the publisher or the author. This is in accordance with the BOAI definition of open access.  
Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 International License.

Contact Us

Address:"Dimce Mircev no.3"
1000 Skopje, Republic of Macedonia
Telephone: +389 2 3113 654
FAX: +389 2 3119 755
E-mail: chiefeditor.pesh@gmail.com