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Physiological stress and performance analysis to karate combat.

Helmi Chaabene1, Ilhem Hellara, Faten B Ghali

  • 1Research Laboratory "Sports performance Optimization", National Center of Medicine and Science in Sports (CNMSS), Tunis, Tunisia - chaabanehelmi@hotmail.fr.

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Karate combat significantly increases physiological stress, elevating salivary cortisol and decreasing the testosterone/cortisol ratio. Blood lactate correlates with these hormonal changes, indicating a catabolic response in athletes.

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Area of Science:

  • Sports Science
  • Exercise Physiology
  • Combat Sports Research

Background:

  • Karate combat is a demanding activity with significant physiological implications.
  • Understanding the physiological stress and hormonal responses in karate is crucial for athlete well-being and performance optimization.

Purpose of the Study:

  • To investigate the relationship between physiological markers and performance analysis parameters during karate contests.
  • To assess the acute hormonal and physiological strain experienced by elite karate athletes.

Main Methods:

  • Nine elite karate athletes provided saliva samples pre- and post-combat.
  • Salivary cortisol (sC), salivary testosterone (sT), and the T/C ratio (sR) were analyzed.
  • Blood lactate concentration was measured post-combat.

Main Results:

  • Salivary cortisol significantly increased post-combat 2 compared to pre-combat 1 (105.3% increase).
  • The testosterone/cortisol ratio showed a significant decrease post-combat 2 (-43.5% decrease).
  • Blood lactate positively correlated with salivary cortisol and negatively with testosterone and the T/C ratio post-combat 1.

Conclusions:

  • Karate combat induces substantial physiological stress, even under simulated conditions.
  • The physiological strain results in a catabolic hormonal response in karate athletes.
  • Hormonal measures did not show significant relationships with match performance analysis parameters in this study.