[Modifications of the water balance and urinary excretion of sodium and potassium in obese subjects on a "single-meal" low-calorie diet].
Four obese patients were given a single-meal diet (684 kcal.) for two periods of three days each. Water-loss, according to Peter-Passmore formula, and urinary sodium and potassium excretion were measured at 4-hours intervals. A water-loss greater in the first than in the second and in the third day in both periods and a strong linear correlation between water-loss  and sodium urinary excretion were found. Furthermore a circadian rhythm either is sodium or in potassium urinary excretion not modifiable by meal timing with both regiment was detected.
D000328:Adult; D004038:Diet, Reducing; D005260:Female; D006801:Humans; D008297:Male; D009765:Obesity / Q000178:diet therapy*; D014882:Water-Electrolyte Balance
Modificazioni del bilancio idrico e della escrezione urinaria del sudio e del potassio in soggetti obesi sottoposti a dieta ipocalorica "monopasto" Rilievi cronobiologici.