[Hormonal, beta-endorphin and renin activity changes in man during partial immersion, as a therapeutic method, in water at 38 degrees C]

Minerva Med. 1987 Feb 15;78(3):135-9.
[Article in Italian]


This research was carried out to define the effects on men of head-out water immersion in a bath at 38.41 +/- 0.04 degrees C (mean +/- S.E.) with a method similar to that used for therapeutical rehabilitation and time of immersion of 30 minutes. Beta-endorphin, renin activity, aldosterone, cortisol, HGH, FSH, LH, TSH, T3, T4 and prolactin haematic levels were analysed. Seventeen healthy subjects (fourteen males and three females), aged 21-65 years (mean age 29.8 +/- 2.6) were studied. Water immersion caused a decrease in FSH and LH haematic concentrations; no significant changes occurred in beta-endorphin, renin activity, aldosterone, prolactin, cortisol, HGH, TSH, T3, T4 and FTI values. Thirty minutes after the end of immersion, FSH and LH levels returned to pre-immersion values. The probable pathogenesis of these observations is suggested.

Publication types

  • English Abstract

MeSH terms

  • Adult
  • Aged
  • Endorphins / blood*
  • Female
  • Follicle Stimulating Hormone / blood*
  • Humans
  • Hydrotherapy*
  • Luteinizing Hormone / blood*
  • Male
  • Middle Aged
  • Renin / blood*
  • Temperature
  • beta-Endorphin


  • Endorphins
  • beta-Endorphin
  • Luteinizing Hormone
  • Follicle Stimulating Hormone
  • Renin