As a diagnostic aid for coronary insufficiency, Viennese David Scherf (1899-1977), Professor Cardiology at the New Yorker Medical College, proposed the use of an ECG during moderate exercise. He noted that only 75% of angina patients had ST depression during an exercise test.
Professor Charles McCloy (1886-1959), an exercise physiologist at the State University of Iowa, argued for a return to the goals of physical health and development. He wrote the contributions 'How about some muscle?' (1932), "Forgotten objectives of physical education" (1933), Endurance "(1934) and" Why not some physical fitness? " (1935). McCloy specialized in anthropometry, the analysis of motor skills.