Research Repository

Effects of a high-protein intake on renal acid excretion in bodybuilders

Manz, F and Remer, T and Decherspliethoff, E and Hohler, M and Kersting, M and Kunz, C and Lausen, B (1995) 'Effects of a high-protein intake on renal acid excretion in bodybuilders.' Zeitschrift Fur Ernahrungswissenschaft, 34 (1). pp. 10-15. ISSN 0044-264X

Full text not available from this repository.


Bodybuilders often prefer a high protein diet to achieve maximum skeletal muscle hypertrophy. In this study the effect of a high protein diet on renal acid load and renal handling of proton excretion was studied comparing dietary intake and urinary ionograms in 37 male bodybuilders and 20 young male adults. Energy intake (+ 7 %), protein intake (128 vs 88 g/d/1.73 m(2)), and renal net acid excretion (95 vs 64 mmol/d/1.73 m(2)) were higher in the bodybuilders than in the controls, however, urine-pH was only slightly lower (5.83 vs 6.12). In the bodybuilders renal ammonium excretion was higher at any given value of urine pH than in the controls. In a regression analysis protein intake proved to be an independent factor modulating the ratio between urine-pH and renal ammonium excretion. The concomitant increase of renal net acid excretion and maximum renal acid excretion capacity in periods of high protein intake appears to be a highly effective response of the kidney to a specific food intake leaving a large renal surplus capacity for an additional renal acid load.

Item Type: Article
Uncontrolled Keywords: Bodybuilder; high protein diet; renal net acid excretion; urine-pH; ammonium excretion; ammonia production; sulfate
Subjects: R Medicine > R Medicine (General)
Divisions: Faculty of Science and Health
Faculty of Science and Health > Mathematical Sciences, Department of
SWORD Depositor: Elements
Depositing User: Elements
Date Deposited: 19 Jun 2012 13:53
Last Modified: 06 Jan 2022 13:24

Actions (login required)

View Item View Item