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Submaximal Exercise Physiology

Meaning

Submaximal Exercise Physiology is the study of the body’s acute and chronic physiological responses to physical activity performed at an intensity below the maximal oxygen uptake (VO2max) or lactate threshold. This domain focuses on the metabolic efficiency, cardiorespiratory function, and hormonal signaling adaptations that occur during sustained, moderate-intensity exercise. Clinically, submaximal testing is used to accurately assess aerobic fitness, metabolic flexibility, and cardiovascular resilience without inducing excessive stress or fatigue. Understanding this physiology is key to designing sustainable training protocols that enhance mitochondrial function and support hormonal balance.