Why the study?
Does water immersion to the neck reduce plasma norepinephrine release in normal male subjects?
Population
8 normal male subjects, fluid restricted overnight
Comparison
6 h of thermoneutral water immersion to the… vs 8 h of a seated control period wearing a…
Design
Other
Follow-up
6 hours of immersion
Authors
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Neck immersion may suppress sympathetic activity in healthy men; hypothesis-generating for cardiovascular applications, should not yet change practice.
Does water immersion to the neck reduce plasma norepinephrine release in normal male subjects?
Water immersion significantly suppresses plasma norepinephrine release in humans, likely reflecting decreased sympathetic nervous activity initiated by baroreceptor stimulation.
Norsk et al. (1990) studied this question.
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