2019, Volume 15

Coordinative intra-segment indicators of karate performance



Márcio Fagundes Goethel1, Ulysses Fernandes Ervilha 1, Pedro Vieira Sarmet Moreira2, Venicius de Paula Silva 1, Antonio Roberto Bendillati2, Adalgiso Coscrato Cardozo3, Mauro Gonçalves3

1Sensory-Motor Interactions Research Group - GDOR, University of São Paulo, São Paulo, Brazil
2Department of Physical Education, São Paulo State University, São Paulo, Brazil
3Department of Physical Education, São Paulo State University, São Paulo , Brazil


Author for correspondence: Márcio Fagundes Goethel; Sensory-Motor Interactions Research Group - GDOR, University of São Paulo, São Paulo, Brazil; email: gbiomech@gmail.com

Márcio Fagundes Goethel: 0000-0003-4382-0159

Ulysses Fernandes Ervilha : 0000-0003-4528-4644

Pedro Vieira Sarmet Moreira: 0000-0001-9462-0240

Venicius de Paula Silva : 0000-0003-3922-7598

Adalgiso Coscrato Cardozo: 0000-0001-9462-0240

Mauro Gonçalves: 0000-0002-4087-1113



Full text

Abstract

Background and Study Aim: Whether from the lower or upper limbs, intersegmental coordination is required at a high level in the blows of various martial arts modalities, with karate being no exception.  In karate, precision, high speed, and technique are the hallmarks of attack, counterattack, and defence. The aim of this study was the phase relationship between the proximal and distal joints during the execution of two technique of stroke karate: the punch gyaku tsuki and the kick mae geri.

Material and Methods: The study included 14 male athletes, equally divided into 2 subgroups according to their current competitive level: sub-elite (SEG) and elite (EG). The karate stroke performance measure used was the linear velocity peak of the wrist and foot. In order to analyze the intra-segment coordination, it was applied the nonlinear dynamics approach named continuous relative phase (CRP). From the CRP curve it was obtained the peak as well as the time to reach the CRP peak. It was also compared the index of the coordinative patterns’ variability, which was obtained by calculating the average of the CRP values and standard deviation.

Results: The EG group showed significantly higher values in the linear velocity peak of the wrist and foot when compared to the SEG. With respect to the CRP curve peak and the coordinative patterns variability, the SEG group presented significantly higher values, showing no differences in the time to reach the CRP peak.

Conclusions: The EG group presented a better intra-segment coordinative capacity during the execution of strikes. The stability of coordinative patterns seems to have an intimate relationship with the technical refinement. Thus, this variable can be configured also as a predictor of performance.


Key words: vertical axis, mae geri, nonlinear dynamics, horizontal axis, gyaku tsuki


Cite this article as:

AMA:

Fagundes Goethel M, Fernandes Ervilha U, Vieira Sarmet Moreira P et al. Coordinative intra-segment indicators of karate performance. ARCH BUDO. 2019;15

APA:

Fagundes Goethel, M., Fernandes Ervilha , U., Vieira Sarmet Moreira, P., de Paula Silva , V., Roberto Bendillati, A., & Coscrato Cardozo, A. et al. (2019). Coordinative intra-segment indicators of karate performance. ARCH BUDO, 15

Chicago:

Fagundes Goethel, Márcio, Fernandes Ervilha Ulysses, Vieira Sarmet Moreira Pedro, de Paula Silva Venicius, Roberto Bendillati Antonio, Coscrato Cardozo Adalgiso, and Gonçalves Mau. 2019. "Coordinative intra-segment indicators of karate performance". ARCH BUDO 15

Harvard:

Fagundes Goethel, M., Fernandes Ervilha , U., Vieira Sarmet Moreira, P., de Paula Silva , V., Roberto Bendillati, A., Coscrato Cardozo, A., and Gonçalves, M. (2019). Coordinative intra-segment indicators of karate performance. ARCH BUDO, 15

MLA:

Gonçalves, Mauro et al. "Coordinative intra-segment indicators of karate performance." ARCH BUDO, vol. 15, 2019

Vancouver:

Fagundes Goethel M, Fernandes Ervilha U, Vieira Sarmet Moreira P et al. Coordinative intra-segment indicators of karate performance. ARCH BUDO 2019; 15