Why the study?
Does 60 degree head-up tilt alter cardiovagal and sympathetic baroreflex sensitivity compared to supine position in human volunteers?
Population
8 human volunteers
Comparison
60 degree head-up tilt (HUT) position vs Supine position
Authors
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Posture-specific baroreflex assessment may be warranted in autonomic testing; extends prior observations but leaves open prognostic relevance.
Does 60 degree head-up tilt alter cardiovagal and sympathetic baroreflex sensitivity compared to supine position in human volunteers?
Head-up tilt produces differential effects on cardiac versus sympathetic baroreflex sensitivity, suggesting dynamic cardiovascular control is dominated by sympathetic control during baroreceptor unloading.
O’Leary et al. (2003) studied this question.
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