Active IQ L3 PT Practice Questions - Active IQ Level 3 Certificate In Personal Training Exam

During exercise, what primary cardiovascular mechanism helps to increase venous return back to the heart?

The vasoconstriction of active skeletal muscle arterioles The skeletal muscle pump and intrathoracic pressure changes during respiration A decrease in the heart rate to allow longer diastolic filling time The voluntary relaxation of the diaphragm and intercostal muscles

Correct Answer:

The skeletal muscle pump and intrathoracic pressure changes during respiration

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