Passive regulation of cardiac output during exercise by the elastic characteristics of the peripheral circulation.
A change in cardiac output induced by a change in cardiac performance is accompanied by opposite changes in cardiac filling pressure owing to the resistive and capacitive properties of blood vessels. The inverse relationship between cardiac output and cardiac filling pressure provides a passive (hydraulic) regulatory mechanism that functions to keep cardiac output constant during rest and exercise.
Sheriff
Don D
DD
Department of Exercise Science, University of Iowa, Iowa City 52242, USA. don-sheriff@uiowa.edu
Mendoza
Jennifer R
JR
D000222:Adaptation, Physiological; D001783:Blood Flow Velocity; D002302:Cardiac Output / Q000502:physiology*; D002496:Central Venous Pressure; D015444:Exercise / Q000502:physiology*; D017079:Exercise Tolerance; D006339:Heart Rate; D006439:Hemodynamics / Q000502:physiology; D006801:Humans; D016491:Peripheral Vascular Diseases / Q000503:physiopathology; D012146:Rest / Q000502:physiology; D018570:Risk Assessment; D012680:Sensitivity and Specificity; D013318:Stroke Volume; D014655:Vascular Resistance