Certified Cardiac Rehabilitation Professional (CCRP) Practice Test 2026 – Complete All-in-One Guide for Exam Success!

Electromyography is the correct choice because it specifically involves recording the electrical activity of muscles in response to stimulation. This diagnostic test is particularly useful in identifying muscle and nerve disorders, as it directly measures the electrical signals that are produced by muscle fibers when they are activated. During the procedure, electrodes are placed on the skin or inserted into the muscle, allowing for the capture of data that reflects the muscle's performance under various conditions.

In contrast, electrocardiography focuses on the electrical activity of the heart, providing insights into heart rhythm and function, but does not directly assess muscle response. Echocardiography utilizes ultrasound waves to visualize heart structures and monitor blood flow but does not measure muscle activity. Cardiac catheterization is an invasive procedure used to diagnose and treat certain heart conditions by directly accessing the coronary arteries and does not involve recording muscle responses either. Thus, electromyography stands out as the diagnostic tool specifically designed for assessing muscle activity.