The cross-over point describes the exercise duration when there is a shift from oxidative metabolism supplying the majority of energy to nonoxidative metabolism supplying the majority of energy.

Question

Quizplus · Accepted Answer

The cross-over point actually describes the exercise duration or intensity at which there is a shift from fat being the primary source of fuel to carbohydrates becoming the primary source of fuel. Oxidative metabolism continues to be the primary pathway for ATP production during both low and high-intensity exercises, but the substrate preference changes.

The Cross-Over Point Describes the Exercise Duration When There Is