It has been recognized that prolonged sitting in one position while driving an automobile for long distances may result in venous thrombosis in the legs. The occurrence of thrombosis of major vessels in the legs of three patients who had been watching television for prolonged periods while sitting in awkward positions drew attention to another cause for the development of thrombophlebitis and arterial occlusion. Television lends itself peculiarly to prolonged sitting during which the legs may not be moved much or at all, since the viewer must face the screen to watch the program, in contrast to listening to the radio where the listener may move about at will. In two of the patients described below venous thrombosis occurred in the legs, with pulmonary embolism. In the third patient thrombosis of the femoral artery occurred as the result of prolonged sitting while the patient was watching television with her legs
Naide M. PROLONGED TELEVISION VIEWING AS CAUSE OF VENOUS AND ARTERIAL THROMBOSIS IN LEGS. JAMA. 1957;165(6):681–682. doi:10.1001/jama.1957.72980240003010a
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