The phenomena of biological adaptation and overtraining are closely related terms, that is why in sport it is possible to identify two types of overtraining. The first of these is known as short-term overtraining, which is required as a state of peripheral fatigue induced by repeated sessions of physical activity in short periods of time that are related to mechanisms of metabolic type, is considered desirable and normal, by allowing mechanisms of adaptation to be activated depending on the nature and administration of the loads, which allow reaching higher yield quotas. The second, long-term overtraining, is characterized by a series of signs and symptoms of exhaustion and persistent fatigue that take place at the level of the central nervous system and that are produced by the imbalance between demanding physical work and recovery periods.This type of condition is also known as, general syndrome of overtraining (GSO), unexplained low performance syndrome, staleness or burnout, which is propitiated by the need to achieve maximum physical performance and the performance of physical activities in a uncontrolled that cause an interruption to the processes of biological recovery that attenuate the obtaining of the physical form wished, reason why the sportsman experiences a decrease of the physical and mental performance, manifested in a clinical picture that reflects muscular inflammation, headache, elevation sudden blood pressure, loss of functional capacity, alterations of the central nervous system (CNS), metabolic, endocrine and immune systems. The stretching is commonly used as a method of physical rehabilitation. The actual information about how the GSO can reduce or prevent in the athlete are no cleared yet, that is the way the information regarding the relationship with the GSO, the stretching, the expression of BDNF and the effects can produce in the regenerative capacity in the over-trained subjects and their compensatory mechanisms during the different cycles of physical exercise, is null, making necessary the investigation of the effects that can produce in the decrease of factors that indicate GSO.
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Changes of the BDNF from basal levels to 1 and 3 month
Timeframe: Baseline, 1 month to 3 month (12 weeks)