2021, Volume 17

The ground reaction forces in basic stances in shotokan karate as an effective indicator in the prevention of lower limb pain in competitive athletes



Anna Lisowska1, Anna Fryzowicz1, Jacek Mączyński1, Małgorzata Ogurkowska1

1Department of Biomechanics, Poznan University of Physical Education, Poznan, Poland, Poznań, Poland


Author for correspondence: Anna Lisowska; Department of Biomechanics, Poznan University of Physical Education, Poznan, Poland, Poznań, Poland; email: ania.lisowska90@gmail.com

Anna Lisowska: 0000-0003-4311-5484

Anna Fryzowicz: 0000-0003-1163-3973

Małgorzata Ogurkowska: 0000-0002-7539-1304



Full text

Abstract

Background and Study Aim: Shotokan karate training is based on learning basic stances. Improving the stances in the training process can have a significant impact on the loading of lower limb joints. Given frequent pain symptoms in the area of the knee joints among professional shotokan karate athletes, the aim of this study was knowledge about the magnitude of lower limb dynamic load indicators while performing three basic kata stances.

Material and Methods: Participants (n = 15) were male shotokan karate kata athletes (aged 27.5 ±8 years; training experience of 17.5 ±4.8 years). During the study, the ground reaction forces (GRFs) during dynamic transitions were measured. The following functional tests were also performed: Thomas test, Ober test and Patrick test, verifying the occurrence of lower limb muscle contractures. The Foot Posture Index Test was also performed.

Results: The GRFs occurring in basic karate stances were statistically significantly different (p<0.05). In the zenkutsu dachi and kokutsu dachi stances their vertical components reached values more than three times higher than the athletes' body weight. All three basic stances (also kiba dachi) showed statistically significant (p<0.05) higher values of the anteroposterior component of GRFs in the group of kata athletes; the occurrence of lower limb muscle contractures, especially hip abductors, was also demonstrated.

Conclusions: Due to the impact of the anteroposterior component of GRFs, the kiba dachi is considered to be the most dangerous stance. In order to avoid chronic overload changes of the musculoskeletal system, preventive measures should be implemented for kata athletes. These should focus on minimizing the generated GRFs and preventing muscle contractures.


Key words: zenkutsu dachi, load, kokutsu dachi, knee joint, kiba dachi


Cite this article as:

AMA:

Lisowska A, Fryzowicz A, Mączyński J et al. The ground reaction forces in basic stances in shotokan karate as an effective indicator in the prevention of lower limb pain in competitive athletes. ARCH BUDO. 2021;17

APA:

Lisowska, A., Fryzowicz, A., Mączyński, J., & Ogurkowska, M. (2021). The ground reaction forces in basic stances in shotokan karate as an effective indicator in the prevention of lower limb pain in competitive athletes. ARCH BUDO, 17

Chicago:

Lisowska, Anna, Fryzowicz Anna, Mączyński Jacek, Ogurkowska Małgorzata. 2021. "The ground reaction forces in basic stances in shotokan karate as an effective indicator in the prevention of lower limb pain in competitive athletes". ARCH BUDO 17

Harvard:

Lisowska, A., Fryzowicz, A., Mączyński, J., and Ogurkowska, M. (2021). The ground reaction forces in basic stances in shotokan karate as an effective indicator in the prevention of lower limb pain in competitive athletes. ARCH BUDO, 17

MLA:

Lisowska, Anna et al. "The ground reaction forces in basic stances in shotokan karate as an effective indicator in the prevention of lower limb pain in competitive athletes." ARCH BUDO, vol. 17, 2021

Vancouver:

Lisowska A, Fryzowicz A, Mączyński J et al. The ground reaction forces in basic stances in shotokan karate as an effective indicator in the prevention of lower limb pain in competitive athletes. ARCH BUDO 2021; 17