Journal article
Left ventricular dynamics during recovery from exercise
Journal of applied physiology (1948), Vol.39(3), pp.449-452
09/1975
DOI: 10.1152/jappl.1975.39.3.449
PMID: 1176410
Abstract
Left ventricular dynamics during recovery were measured in dogs, 3 min after brief periods of mild, moderate, and severe treadmill exercise. As compared with resting values, stroke volume was unchanged, and the maximum first derivative of the left ventricular pressure was either unchanged or slightly elevated. Increases in heart rate of 20, 26, and 46 beats/min for mild, moderate, and severe exercise appear to be the major factor in augmenting cardiac output during recovery. With moderate and severe exercise, left ventricular end-diastolic diameter increased and continued to be elevated during recovery, whereas end-systolic diameter decreased during exercise but was elevated above resting values during recovery. Therefore, with strenuous exercise, a sympathetic-mediated increase in contractility recedes promptly during the postexercise period but the Frank-Starling mechanism continues to be a factor.
Details
- Title: Subtitle
- Left ventricular dynamics during recovery from exercise
- Creators
- L D HorwitzJ M AtkinsS A Dunbar
- Resource Type
- Journal article
- Publication Details
- Journal of applied physiology (1948), Vol.39(3), pp.449-452
- DOI
- 10.1152/jappl.1975.39.3.449
- PMID
- 1176410
- ISSN
- 0021-8987
- eISSN
- 2691-2473
- Language
- English
- Date published
- 09/1975
- Academic Unit
- Cardiovascular Medicine; Internal Medicine
- Record Identifier
- 9984656541802771
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