CanFitPro Personal Training Specialist Practice Test

What is the primary cause of lactic acidosis during exercise?

1. Low ATP production

2. High ATP production

3. Lactic acid reaching high levels

4. Insufficient carbohydrate consumption

The correct answer is: Lactic acid reaching high levels

During exercise, the body requires a constant supply of energy in the form of ATP. In aerobic conditions, this energy is primarily produced through the breakdown of glucose. However, in anaerobic conditions, when there is not enough oxygen available, the body switches to a different energy metabolism pathway called glycolysis. This process produces lactic acid as a byproduct, causing the muscles to feel fatigued and sore. However, this lactic acid is usually cleared from the body through various mechanisms. In lactic acidosis, there is a buildup of lactic acid beyond the body's ability to clear it, leading to a decrease in blood pH and potentially harmful effects. So, the primary cause of lactic acidosis during exercise is the buildup of lactic acid. Option A, B, and D are incorrect because ATP production itself is not the cause of lactic acidosis. Additionally,