ANATOMY

Detailed explanation-1: -This causes hemoglobin to release more oxygen, then it increas oxygen delivery to the muscles. Exercise or physical activity can increase hemoglobin levels in the blood. This is in accordance which explains that, exercise can increase total Hb and red cell mass, which enhances oxygen-carrying capacity [9].

Detailed explanation-2: -You may see blood oxygen levels drop during exercise at higher intensities (especially maximum aerobic intervals, about 3-6 minutes long), or when you train at altitudes much higher than you are used to, but only slightly. As you train, your body will be able to utilize more oxygen more efficiently.

Detailed explanation-3: -During exercise, your muscles are hard at work. Your breathing and heart rate increase, pulling more oxygen into the bloodstream. As you exercise, the oxygen that reaches your muscles converts available glucose into ATP, providing your body with the energy it needs to complete your workout.

Detailed explanation-4: -Skeletal muscle blood flow increases dramatically, while blood flow to other tissues, especially the abdominal viscera and kidneys, is reduced. During heavy exercise, the vast increase in cardiac output is directed almost exclusively to contracting skeletal and cardiac muscles.

Detailed explanation-5: -The process of erythropoiesis will increase the number of erythrocytes and subsequent increase in total hemoglobin, which both contribute to an increase in the blood’s oxygen-carrying capacity.