APPLICATION OF THE QUARTILE STANDARDIZED ASSESSMENT METHOD FOR MONITORING OXYGEN MASS TRANSFER REGIMES IN ATHLETES

Abstract

The paper presents the potential application of the Quartile Standardized Grading Method (QSGM) for monitoring oxygen mass transfer regimes (OMTR) in the body, reflecting the coordination between oxygen transport and utilization during intensive muscular work in athletes. It was found that OMTR demonstrate distinct functional profiles depending on individual characteristics, the capacity of the cardiorespiratory system (CRS), and tissue metabolic mechanisms. As a specific example, the paper analyzes three elite athletes with different individual features. Analysis of the integral indices of the OMTR blocks revealed clear individual differences in the functioning of the oxygen mass transfer system. Athlete A was characterized by relatively low efficiency of oxygen delivery and utilization, with tissue-level limitations and insufficient coordination of transport stages during aerobic exercise. Athlete B demonstrated high and stable integral indices, reflecting optimal coordination of ventilatory, hemodynamic, and tissue components, with maximal realization of OMTR potential at maximal and critical power outputs. Athlete C showed a balanced intermediate profile, with moderate OMTR capacity and adaptive changes in diffusion efficiency depending on exercise intensity. Through the unification of heterogeneous physiological indicators using QSGM, model characteristics of functional state and reserve capacities were developed for each athlete. Visualization of the results with quartile and color coding facilitated comparative analysis and monitoring of physiological and energetic processes at different exercise intensities. The use of QSGM enables standardization of physiological parameters, enhances sensitivity in monitoring functional state, and provides a systemic assessment of CRS coordination under varying levels of muscular loads.