Effects of water immersion on sympathoadrenal and dopa-dopamine systems in humans
Why the study?
Does water immersion to the neck affect sympathoadrenal and dopa-dopamine systems in normal subjects?
Population
14 normal subjects (10 in immersion group, 4 controls)
Comparison
Sitting in a water-immersion tank to the neck… vs Seated without immersion for 3 hours
Design
Other
Follow-up
3 hours
Authors
Discussion
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Member takes
Implication
Supports ANP-driven natriuresis in normals; leaves open translation to volume disorders or therapy.
Structured PICO
Does water immersion to the neck affect sympathoadrenal and dopa-dopamine systems in normal subjects?
P
Population
14 normal subjects (10 in immersion group, 4 controls)
I
Intervention
Sitting in a water-immersion tank to the neck for 3 hours
C
Comparator
Seated without immersion for 3 hours
O
Outcome
Changes in urine volume, urinary sodium excretion, and activities of the sympathetic nervous system, atrial natriuretic peptide system, and renal dopa-dopamine systemsurrogate
Water immersion to the neck induces marked diuresis and natriuresis accompanied by suppression of the sympathetic nervous system and activation of the atrial natriuretic peptide system.
Cite This Study
Grossman et al. (1992) studied this question.