Randomized trial evaluates physiological resilience in well-trained runners during and after exercise, suggesting the need for longer protocols to enhance reliability.
) and ventilatory thresholds (VTs) had poor reliability (ICC: 0.07-0.36 and TE: 3.5-4.6). However, the absolute values of these variables demonstrated good to excellent reliability in fatigued state (ICC > 0.83, TE% < 5.2%, and CV% < 4.1%) even though they significantly deteriorated. Determining changes in sPeak and drifts in RE and HR appears to be the most reliable method to measure physiological resilience. In contrast, measurement of the physiological profile remains reliable in fatigued state for every variable. Longer or more demanding protocols may be required to obtain greater reliability for deterioration of the physiological profile.
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Malinen et al. (2026) studied this question.
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