Preprint Article Version 1 This version is not peer-reviewed

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

Version 1 : Received: 24 October 2024 / Approved: 25 October 2024 / Online: 25 October 2024 (08:14:32 CEST)

How to cite: Shahidi, S. H. The Temporal Dynamics of Blood Lactate Concentration and Oxygen Consumption Following Supra-Maximal Efforts. Preprints 2024, 2024101990. https://doi.org/10.20944/preprints202410.1990.v1 Shahidi, S. H. The Temporal Dynamics of Blood Lactate Concentration and Oxygen Consumption Following Supra-Maximal Efforts. Preprints 2024, 2024101990. https://doi.org/10.20944/preprints202410.1990.v1

Abstract

(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.

Keywords

Blood lactate; oxygen consumption; elite sprinters; recovery kinetics; graded exercise test; Wingate Anaerobic Test

Subject

Physical Sciences, Other

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