Background: The recent sport promotion and healthy boom brought increasing the sport population. Running especially is the most popular activity. Various urinary abnormalities are induced by strenunous exercise. Hematuria has been found after various sports activities and noted as sports hematuria by some studies. We evaluated relation between hematuria and running as the most popular sport in summer.
Material and methods: Urine samples were obtained from 109 healthy volunteers participated in 5 km run, at rest before and immediately after running. We could evaluate 90 of all and investigate counts and morphpology of urinary red cells by microscopic finding of urine sediments and analysis of flowcytometry for urinary cells.
Results: Eighty-three subjects had increased counts of urinary red cells after running. Of these, 32 had counts above the normal range, microscopic hematuria (RBC above 3/hpf). In analysis of these 32 had dysmorphic pattern mostly.
Conclusion: This study confirms that exercise induces hematuria easily and sports hematuria has a glomerular source chiefly.