HMS, BM EQ-Bank 353 MC

During a fitness test, which of the following observations indicates a significant increase in lactate levels as an immediate physiological response to training?

A decrease in heart rate during the first minute of recovery
An increase in breathing rate during high-intensity exercise
A feeling of muscle burning during intense exercise
A decrease in oxygen consumption during moderate exercise

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\(C\)

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C is correct: The feeling of muscle burning during intense exercise is a common sensation associated with lactate accumulation in the muscles, which is an immediate physiological response to high-intensity training.

Other Options:

A is incorrect: Decreased heart rate during recovery relates to cardiovascular recovery, not lactate levels
B is incorrect: Increased breathing rate relates to ventilation response, not directly to lactate
D is incorrect: Oxygen consumption increases, not decreases, during exercise