Do contusions in judo induce haematuria

Sports haematuria is a well recognized phenomenon whose mechanisms have also been well established. In this study, judo practitioners carried out a quite strenuous throwing exercise, each judoka executed 80–100 falls. There was no haematuria in any of the 39 judokas, whether the 4.5-cm-thick judo mats were placed on a wooden floor or on a concrete one. The occurrence of haematuria must always be taken seriously and as an abnormal phenomenon on an individual level.