Halvorsen F A, Lyng J, Ritland S
Scand J Gastroenterol. 1986 May;21(4):493-7. doi: 10.3109/00365528609015168.
Gastrointestinal bleeding has been proposed to be a contributing factor in the development of 'runner's anaemia'. To study the incidence of gastrointestinal bleeding, 2-3 prerace and 2-3 postrace faecal samples from 63 marathon runners were tested for the presence of blood. Five of the participants had faecal blood before but not after the race. A reasonable explanation for the bleeding was found for four. Eight runners (13%) had positive tests for faecal blood after the competition. Clinical investigation disclosed no gastrointestinal disease. Postrace haematuria was discovered in another 13% of the runners. None of the runners observed overt gastrointestinal bleeding or haematuria, nor did anyone develop anaemia. Gastrointestinal disturbances related to running were reported by 54%. It is concluded that gastrointestinal complaints and gastrointestinal bleeding are prevalent among marathon runners.
胃肠道出血被认为是“跑步者贫血”发展的一个促成因素。为了研究胃肠道出血的发生率，对63名马拉松运动员的2 - 3份赛前和2 - 3份赛后粪便样本进行了潜血检测。5名参与者在赛前粪便潜血阳性，但赛后转为阴性。其中4人找到了出血的合理原因。8名运动员（13%）在比赛后粪便潜血检测呈阳性。临床检查未发现胃肠道疾病。另外13%的运动员赛后出现血尿。没有运动员观察到明显的胃肠道出血或血尿，也没有人出现贫血。54%的运动员报告有与跑步相关的胃肠道不适。结论是胃肠道不适和胃肠道出血在马拉松运动员中很普遍。
