Venous plasma [ADP] before exercise, during incremental treadmill test until exhaustion, and post-exercise recovery in futsal players (FU; n = 11), endurance athletes (EN; n = 11), sprinters (SP; n = 11), and control group (CO; n = 11) in four consecutive training phases. Arrows indicate the first significant differences from samples taken at rest and maximal exercise within examinations. Significant differences between blood sampling points: *** p < 0.001, ** p < 0.01, * p < 0.05. Significant differences between examinations at the same sampling point: § p < 0.001, ‡ p < 0.01, † p < 0.05. Data are presented as means ± SD.