Modifications of the water balance and urinary excretion of sodium and potassium in obese subjects on a "single-meal" low-calorie diet
Capani, F.; Carfagnini, A.; Consoli, A.; Della Loggia, F.; Del Ponte, A.; Di Felice, M.; Donatelli, S.; Guagnano, T.; Iezzi, M.; Sensi, S.
Bollettino della Societa Italiana di Biologia Sperimentale 57(3): 316-319
1981
ISSN/ISBN: 0037-8771 PMID: 7236408 Document Number: 177676
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.