title: Exercise-induced proteinuria in children and adolescents.
abstract: Urinary albumin and beta 2-microglobulin excretion rates were measured by radioimmunological methods in 60 children and adolescents at rest and during physical exercise. The geometric mean of the albumin excretion rate was 4.4 (microgram/min)/m2 at rest and rose to 7.9 (micrograms/min)/m2 during exercise (P less than 0.001), while the geometric mean of beta 2-microglobulin was 31.9 (ng/min)/m2 at rest and 26.2 (ng/min)/m2 during exercise. These results indicate that exercise-induced proteinuria is of a glomerular leaking type. The albumin excretion rate was not dependent on the age or sex of the subjects. The exercise-induced albuminuria correlated weakly but significantly with the maximal blood pressure (r = 0.27; P less than 0.05) and with the physical fitness of the subjects (r = 0.28; P less than 0.05).
mesh_terms: D000293:Adolescent; D000375:Aging; D000419:Albuminuria / Q000209:etiology; D002648:Child; D003404:Creatinine / Q000652:urine; D005260:Female; D006801:Humans; D008297:Male; D005082:Physical Exertion; D011507:Proteinuria / Q000209:etiology*; D012737:Sex Factors; D001613:beta 2-Microglobulin / Q000652:urine
chemical_list: D001613:beta 2-Microglobulin; D003404:Creatinine