What can you say about the amplitude of the various waves in

What can you say about the amplitude of the various waves in different cardiac cycles? The P wave and the QRS complex represent depolarization of the a trial and ventricular muscle respectively. Why does the QRS complex have the largest amplitude? In step 5 you calculated a heart rate averaged over 15 seconds whereas in step 6 you calculated \'instantaneous\' heart rates. Explain any differences between these values. The range for a normal resting heart rate is 60 to 90 bpm. A trained athlete could have a resting heart rate of 45 to 60 bpm. Why might a very fit person have a slower heart rate than someone of average fitness? What effect did strong hand or arm muscle contraction have on the ECG trace? What is the origin of this effect?

Solution

1. Amplitude of the various waves changes from one cardiac cycle to another cardiac cycle because your heart rate fluctuates based upon your activity level. Resting heart rate varies greatly from your active heart rate.