Kehl O, Jäger K, Münch R, Bühler H, Segantini P, Bollinger A, Ammann R
Schweiz Med Wochenschr. 1986 Jul 19;116(29):974-6.
Anemia in runners is common but its origin is unknown. The present study reports on frequency and origin of gastrointestinal blood loss in cross-country skiers and runners. 41 participants in the Engadin Ski Marathon were checked by questionnaire and occult blood test. 8 (19%) had diarrhea or abdominal pain during or immediately after skiing and 3 (7%) had hemoccult-positive stools. In addition, the blood flow of the superior mesenteric artery was measured by duplex scanning in two trained runners after standardized exercise. While the mesenteric blood flow in the asymptomatic runner changed only insignificantly there was an impressive decrease in the second runner, who had been treated for anemia, down to 20% and 40% (30 and 90 min respectively) after exercise. It is concluded that the occurrence of gastrointestinal blood loss in cross-country skiing, and the significant decrease in mesenteric blood flow in a symptomatic runner, indicate a close and possible causal relationship between mesenteric ischemia and "jogging anemia".
跑步者贫血很常见，但其病因不明。本研究报告了越野滑雪者和跑步者胃肠道失血的频率及病因。通过问卷调查和潜血试验对41名参加恩嘎丁滑雪马拉松的参与者进行了检查。8人（19%）在滑雪期间或刚结束后出现腹泻或腹痛，3人（7%）大便潜血呈阳性。此外，对两名经过训练的跑步者在标准化运动后通过双功扫描测量了肠系膜上动脉的血流量。无症状跑步者的肠系膜血流量变化不明显，而另一名曾接受贫血治疗的跑步者，其血流量在运动后显著下降，分别降至20%和40%（分别在运动后30分钟和90分钟）。结论是，越野滑雪时胃肠道失血的发生，以及有症状跑步者肠系膜血流量的显著下降，表明肠系膜缺血与“慢跑性贫血”之间存在密切且可能的因果关系。
