[Observations on the functional capacity as shown in the electrocardiogram taken after holding of the breath as compared to that taken after body bending].
D002320:Cardiovascular Physiological Phenomena; D004562:Electrocardiography; D006331:Heart Diseases / Q000502:physiology*; D006801:Humans; D011187:Posture
ELECTROCARDIOGRAPHY; HEART DISEASES/physiology
Betrachtungen über die Leistungsfähigkeit des Atemanhalte-Ekg im Vergleich mit dem Rumpfbeuge-Ekg.