One essential element of athlete training is conditioning camps, where athletes undergo a rigorous and targeted training schedule to prepare for upcoming sporting events. During sports camps, due to the accumulation of a large number of training units, including high-intensity exercises, athletes react with post-exercise overload, acute fatigue, and overreaching which can become a chronic overtraining syndrome. Overtraining syndrome is a very specific and severe condition where overtraining without adequate rest and recovery leads to performance decrements lasting more than 2-3 months, coupled with a mood disturbance. The exact etiology and pathogenesis are unknown and actively being investigated. During training camps the balance between training volumes and recovery is often a delicate one and, the accumulation of exercise-induced stress may exceed the capacity of both neuroendocrine and immune adaptation leading to an alteration of physiological functions, decreasing adaptation to performance, impairment of psychological processing, immunological dysfunction, and biochemical abnormalities. Moreover, there is currently a lack of biomarkers accessible to assist in diagnosing and, what's even more important - help to prevent the overtraining syndrome, except for the continued presence of unexplained underperformance despite athletes' adequate rest and recovery. Thus, this study aims to explain how long and intensive training for endurance affects the hormonal and immune systems of young athletes. The main questions it aims to answer are: 1. How does intense training influence hormonal and immune responses in young, trained athletes? 2. Does training specialization affect the hormonal and immune response to intense training?
Age range
15 Years – 17 Years
Sex
ALL
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Changes in epinephrine serum level.
Timeframe: at rest baseline (before training), after 4 - and after another 5 days of training.
Changes in norepinephrine serum level.
Timeframe: at rested baseline (before training), after 4 - and after another 5 days of training.
Changes in cortisol serum level.
Timeframe: at rested baseline (before training), after 4 - and after another 5 days of training.
Changes in hs-CRP serum level.
Timeframe: at rested baseline (before training), after 4 - and after another 5 days of training.
Changes in Myoglobin serum level.
Timeframe: at rested baseline (before training), after 4 - and after another 5 days of training.