Immune and Hormonal Response to High-intensity Exercise During Orienteering
Nayara Costa Araujo1, Anibal Monteiro Magalhães Neto1, Mahmi Fujimori1
1Federal University of Mato Grosso, Institute of Biological and Health Science, Barra do Garças, Brazil.
Elite orienteering athletes experience significant stress, impacting their immune and endocrine systems. This high-intensity sport triggers an anti-inflammatory response as an adaptation mechanism.
Area of Science:
- Sports Science
- Immunology
- Endocrinology
Background:
- Ori enteering is a demanding sport combining physical and cognitive challenges.
- Previous research focused on physiological stress, neglecting immunological changes.
- Understanding immune responses in elite athletes is crucial for performance and health.
Purpose of the Study:
- To investigate the immunological, physiological, and pathological responses of elite orienteering athletes during high-intensity exercise.
- To assess stress markers and immune system changes in response to an orienteering race.
Main Methods:
- Elite orienteering athletes (n=30) were studied during a regional championship.
- Cortisol levels were measured pre- and post-competition to gauge stress.
- Cytokine profiles (IL-2, IL-4, IL-6, IL-10, TNF-α, IFN-γ, IL-17) were analyzed to evaluate immune response.
Main Results:
- Cortisol levels significantly increased post-competition, confirming a stress state.
- Immune markers Interferon-gamma (IFN-γ), Interleukin-6 (IL-6), and Interleukin-10 (IL-10) showed elevated levels after the race.
- These findings suggest a significant impact of high-intensity exercise on athlete's endocrine and immune systems.
Conclusions:
- Orienteering induces substantial physiological stress in elite athletes.
- The observed immune response is predominantly anti-inflammatory, suggesting an adaptive mechanism.
- This study highlights the complex interplay between stress, exercise, and immune function in endurance athletes.
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