a) Why would exercise influence the R-R interval? Would a changein R-R interval following a short period of exercise be the samefor all people, why/why not?
b) Each component of the ECG waveform is associated with aparticular activity during the cardiac cycle. Based on yourknowledge of the actions of the heart associated with the P, Q, R,S, and T waves in the ECG, and what actions in the heart generatethe lub-dub sounds, when would you expect to hear thelub and dub sounds in relation to the differentcomponents of the ECG waveform?
