title: Cardiac dynamics during the work load as studied by polycardiography.
abstract: Changes in systolic time intervals during the work load point to the differences in their control mechanisms. The exponential decay of the parameters shows sinusoidal oscillations. The number of oscillations is short in cycle length and isometric contraction time; it is the greatest in the ejection period.
mesh_terms: D006321:Heart / Q000502:physiology*; D006334:Heart Function Tests; D006339:Heart Rate; D006801:Humans; D005082:Physical Exertion; D013599:Systole; D014938:Work Capacity Evaluation