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Reactions of the Normal and Abnormal Heart to Motorcar Driving.

Walter Somerville, F.R.C.P.; P. I. Taggart, M.R.C.P.; and D. Gibbons
Ann Intern Med. 1968;68(5):1162. doi:10.7326/0003-4819-68-5-1162_2
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The object was to observe the reaction of certain cardiac functions to motorcar driving. This report related to the electrocardiogram (EKG) and the heart rate.

Radio electrocardiograms were recorded before, during, and after driving in busy city traffic. The test subjects were persons with normal hearts, coronary heart disease, and various arrhythmias. Additional observations were made on professional drivers during competitive racing. Heart rates of 120 to 140 were common in all groups, usually unknown to the subject. Sinus tachycardia of 180 was recorded during racing. Nonspecific, reversible ST and T changes appeared in certain normals. Ischemic ST and T




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