Summary
As a consequence of a short and exhaustive exercise, proteinuria increases due to haemoconcentration; proteins in urine increase from 40.4 ± 7.7 mg to mg 922.8 ± 19.1 and the A/G ratio in urine increases from 0.57 ± 0.01 to 1.54 ± 0.12, a value which is about the same as in plasma proteins.
Exercise proteinuria seems to be independent from pH and from modifications of lactic acid serum level; it is probably due to secretion of l-noradrenaline during exercise, as infusion of this substance induces the same changes as exercise.
After a 50 days' training, exercise proteinuria and proteinemia show a progressive decrease, while the inversion of urinary A/G ratio after exercise remains unaltered.
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Cantone, A., Cerretelli, P. Effect of training on proteinuria following muscular exercise. Int. Z. Angew. Physiol. Einschl. Arbeitsphysiol. 18, 324–329 (1960). https://doi.org/10.1007/BF00699372
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DOI: https://doi.org/10.1007/BF00699372