G. S. Prema, G. Rekha2
ECG is the most basic non-invasive, fairly informative and routine modality of investigation which gives clear and accurate information regarding cardiac function. An electrocardiogram associated with exercise is used as screening procedure for detecting latent coronary artery disease in asymptomatic patients. Present study is done to evaluate the R wave amplitude changes during exercise and to correlate heart rate changes that can influence ECG changes. It was seen during the study that R-Wave Amplitude increases after exercise upto heart rate of 120-130/min and decreases with further increase in the heart rate. This incidentally reflects end diastolic dimensions of left ventricle
