The recovery after every training is defined as ANABOLIC PHASE, when anabolic processes returned changed parameters towards the resting levels or even to an increase values than it was reached before exercise (supercompensation). This make organism to adapt to sports training with enhanced performance in certain time interval. In spite it is not recently known, the time interval for reaching previous levels or even supercompensation is last from a several seconds (ATP), minutes (CrP) to overnight interval, dependent on duration and intensity of exercise. Therefore, after competitions, the such recovery interval (anabolic phase) is longer.
Special case of the recovery phenomenon represents time interval after extreme long competitions (marathons, extreme marathons and triatlons (Ironman). In sports practice, the enhanced values of urea or myoglobin on one hand and changed heart rate variability (HRV) seems to be used. However, these characteristics show, that recovery period of few days or even a week is adequate time interval. But training practice show that runners were not able to train even a month. Muscle microdamage, which persits such long time support idea, that recovery interval, which consist of easy training sessions should lasting such a long time. Our experience (Usaj, Lihteneger, Lojen (2023) xxxxxxx) using different approach for approve such long recovery period. By using stable isotope of Glucose (13C-Glucose) in drinking solution through the simulation run of 20 km, it has been possible to show, that muscles, during running starts to oxidate carbohydrates earlier by using more endogenous source (glacogen), than before competition. This interval slowly delayed toward end of test 20 km running a month after event and with according to increased performance.
