title: The effect of triathlon on urinary excretion of enzymes and proteins.
abstract: In order to investigate the effect of triathlon and renal function of normal subjects, we evaluated the excretion of urinary enzymes and proteins before and after triathlon. From 6 subjects samples were obtained 24 hours after the first urine collection. We performed quantification of urinary total protein, beta2-microglobulin (beta2-M), N-acetyl-beta-D-glucosaminidase activity (NAG), and concentration of urinary creatinine from each participant. There was a significant increase in urinary total protein excretion immediately after triathlon (p<0.01). The urinary beta2-M and NAG excretions after triathlon were higher than the initial values. Post-exercise proteinuria in one subject persisted until the next morning, whereas the increased excretion of urinary beta2-M and NAG returned to the pre-exercise level at least 24 hours after triathlon. It appears to be reasonable to presume that glomerular damage may persist in some subjects who do heavy exercise.
authors.affiliation: Department of Urology, Yamagata University School of Medicine, Japan.
authors.forename: H
authors.initials: H
authors.lastname: Yaguchi
authors.forename: M
authors.initials: M
authors.lastname: Ishigooka
authors.forename: S
authors.initials: S
authors.lastname: Hayami
authors.forename: T
authors.initials: T
authors.lastname: Kobayashi
authors.forename: Y
authors.initials: Y
authors.lastname: Kubota
authors.forename: T
authors.initials: T
authors.lastname: Nakada
authors.forename: K
authors.initials: K
authors.lastname: Mitobe
mesh_terms: D000118:Acetylglucosaminidase / Q000652:urine*; D000328:Adult; D003404:Creatinine / Q000652:urine*; D015444:Exercise; D006801:Humans; D008297:Male; D011507:Proteinuria / Q000652:urine*; D013997:Time Factors; D001613:beta 2-Microglobulin / Q000652:urine*
chemical_list: D001613:beta 2-Microglobulin; D003404:Creatinine; D000118:Acetylglucosaminidase