The regularity of ???Athletic Pseudonephritis??? after heavy exercise

Abstract
Proteinuria and the appearance of formed elements in urine have been demonstrated with regularity in well trained runners following a 20 km crosscountry race. The rate of protein excretion increased above the pre-exercise value in 41 of 51 men. Correspondingly, the rates of urine and creatinine excretion decreased. Glucose was found in the exercise urine of two subjects who had the greatest rates of protein excretion. Epithelial cells, white cells, red cells, hyaline casts, and granular casts in urine were associated with exercise in 52 men from the same population. It appears that proteinuria is involved in cast formation as a result of exercise. We conclude that the syndrome “athletic pseudonephritis” is a regular phenomenon after heavy exercise.

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