The Temporal Dynamics of Blood Lactate Concentration and Oxygen Consumption Following Supra-Maximal Efforts

(1) Background: This study aimed to analyze the temporal dynamics of blood lactate concentration and oxy-gen consumption following supra-maximal efforts, providing insights into recovery kinetics and physiologi-cal responses. (2) Methods: Ten highly trained 100-meter sprinters participated. Each athlete completed a graded exercise test (GXT) and a 30-second Wingate Anaerobic Test. Blood lactate concentrations were meas-ured before, immediately after, and at intervals up to 20 minutes post-exercise. Oxygen consumption (VO2) was continuously monitored during and after the GXT. (3) Results: Peak blood lactate concentration was reached around 3 minutes post-exercise, averaging 14.9 ± 3.5 mmol/L. Lactate clearance followed a bi-exponential decay, with a rapid initial phase (τ1 = 60 seconds) and a slower secondary phase (τ2 = 300 seconds). Peak VO2 values were high (45.4 ± 4.1 ml/kg/min), reflecting significant aerobic capacity. VO2 re-covery also showed a bi-exponential pattern, suggesting efficient recovery mechanisms. (4) Conclusion: The findings support previous research by demonstrating a high anaerobic glycolytic contribution during sprint-ing and rapid lactate clearance due to effective recovery. The bi-exponential models for both lactate and VO2 kinetics provide deeper insight into metabolic responses and recovery profiles, which are crucial for optimiz-ing training in competitive sports. This study offers valuable data for improving recovery strategies and per-formance in sprint athletes.