Why the study?
Does head-out water immersion at different temperatures affect the release of atrial natriuretic factor in healthy subjects?
Does head-out water immersion at different temperatures affect the release of atrial natriuretic factor in healthy subjects?
Hot water immersion significantly increases ANF secretion compared to cooler temperatures, suggesting that heat-induced circulatory changes and increased heart rate modulate ANF release.
Hyperthermic immersion may augment ANF release in healthy subjects; hypothesis-generating and leaves open any therapeutic role in cardiovascular disease.
Physiology of water immersion -endocrine reaction in hot environment -atrial natriuretic factorSummary: Head-out water immersion (HOI) results in a redistribution of blood volume with a relative central hypervolemia, which is the cause of increased secretion of the atrionatriuretic factor (ANF).This study was conducted to examine the role of different bath temperatures for the stimulation of ANF secretion.Twelve healthy subjects were immersed in 4 water baths (24, 28.35 and 39 *C) for 40 min in a randomized fashion.Plasma ANF was determined by radioimmunoassay following extraction.The baths led to a significant increase in plasma ANF.Maximal increments were the highest in hot baths.This data suggests that heat induced changes in circulation may modulate the secretion of ANF.The importance of heart rate is being discussed.
No takes yet. Share an insight, caveat, or question.
Schnizer et al. (1991) studied this question.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: