Key result
Upright submaximal exercise significantly increased RVEF from 44% to 60% and LVEF from 62% to 76% (P<0.001 for both) compared to rest in normal subjects.
Why the study?
Does upright submaximal exercise alter right and left ventricular ejection fractions and volumes compared to rest in normal subjects?
Population
22 normal subjects
Comparison
Upright submaximal exercise vs Rest
Design
Cross-sectional
Authors
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Normative biventricular EF responses during upright exercise in healthy subjects; leaves open relevance to patients with cardiovascular disease.
Observational (n=22)
Does upright submaximal exercise alter right and left ventricular ejection fractions and volumes compared to rest in normal subjects?
Absolute Event Rate: 60% vs 44%
p-value: p=<0.001
In normal subjects, upright submaximal exercise significantly increases both right and left ventricular ejection fractions, driven by the Starling effect and increased myocardial contractility.
Brynjolf et al. (1984) conducted an observational in Healthy (n=22). Upright submaximal exercise vs. Rest was evaluated on Right ventricular ejection fraction (RVEF) (p=<0.001). Upright submaximal exercise significantly increased RVEF from 44% to 60% and LVEF from 62% to 76% (P<0.001 for both) compared to rest in normal subjects.
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