ABSTRACT
Exercise intensity is a factor that retards the rate of post-exercise changes. The significance of the increased vagal tone was emphasized by results indicating that the heart rate decreased exponentially to the initial level during the first post-exercise minute despite the maximal noradrenaline level in the blood at the same time. Recovery period means also a change in protein metabolism opposite to that happening during exercise. An increased rate of recovery of heart frequency was found in trained persons also after exercise with increasing intensity up to the individual maximum. Additionally, energy expenditure for the reconstructive function of the recovery period has to be taken into account to explain the prolonged component of excess post-exercise oxygen consumption. The rate of lactate removal during recovery is directly related to the lactate concentration at the end of exercise. The hormone changes in the recovery period express, obviously, the following normalization of the endocrine function.
