how does the average PR interval from rest and each time per

how does the average P-R interval from rest and each time period in recovery compare?

Solution

An electrocardiogram (ECG) have the waveforms as, P-wave, QRS complex and the T -wave. The P wave represents sino-atrial conduction, the QRS complex represents atrioventricular conduction and finally intraventricular contraction finishing with the T wave.

The normal duration of the PR interval at rest is 0.12-0.20 seconds.

During exercise, the heart rate increases and the heart needs to pump blood to all parts of the body at a faster rate.

Thus, the P-R interval during exercise and recovery is decreased to 0.08-0.13 seconds.