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Dynamic balance in elite karateka.

Matteo Zago1, Andrea Mapelli1, Yuri Francesca Shirai1

  • 1Department of Biomedical Sciences for Health, Università degli Studi di Milano, via Mangiagalli 31, 20133 Milano, Italy.

Journal of Electromyography and Kinesiology : Official Journal of the International Society of Electrophysiological Kinesiology
|October 27, 2015
PubMed
Summary

Elite karate athletes demonstrate superior balance control through dynamic adjustments in their center of mass and base of support during traditional techniques (kihon). This research quantifies their advanced motor strategies for maintaining stability.

Keywords:
Body stability controlCenter of massKarate biomechanicsKihonMartial arts

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Area of Science:

  • Sports Science
  • Biomechanics
  • Motor Control

Background:

  • Balance control is crucial for performance in karate.
  • High-level athletes are hypothesized to possess advanced balance abilities.
  • Understanding elite athletes' motor strategies can inform training and talent identification.

Purpose of the Study:

  • To quantitatively investigate the motor strategies used by elite and non-elite karateka for balance control during competition techniques (kihon).
  • To compare the body's center of mass (CoM) kinematics, step width, and joint behavior between elite Masters and non-elite Practitioners.

Main Methods:

  • Comparison of traditional karate techniques (kihon) execution between elite Masters (n=6) and non-elite Practitioners (n=4).
  • Assessment of body center of mass (CoM) kinematics, including height, horizontal displacement, velocity, and acceleration.
  • Analysis of step width and angular joint behavior during the kihon sequence.

Main Results:

  • Elite Masters exhibited an 8% lower normalized average CoM height compared to Practitioners.
  • Masters showed significantly higher horizontal CoM displacement (2.5 vs. 1.9 m), average velocity, and rms acceleration.
  • Masters utilized a wider step width in over half of the sequence steps.

Conclusions:

  • Elite karateka display refined dynamic balance control through strategies like increasing the base of support and specific lower limb maneuvers.
  • The findings suggest a quantifiable method for detecting talented karateka, measuring proficiency, and assessing training effectiveness.