Prevalence of gastrointestinal complaints in runners competing in a long-distance run: An internet-based observational study in 1281 subjects

Abstract

The prevalence of GI complaints during and after running was low compared with that reported in other studies, which is partly due to the definition of "symptomatic" used in our study. The risk factors associated with becoming symptomatic were identical to those in other studies. The relationship between complaints during the run and the type of complaints afterwards suggests a role of GI ischaemia in the pathophysiology of running-induced GI symptoms.

Exercise, fitness, and the gut

“…The risk of this occurring is greater in the under-trained athlete who may experience high levels of splanchnic vascular hyper-responsiveness secondary to prolonged blood flow redistribution [15,16]. Dehydration is a risk factor and women appear to be more frequently affected [17]. For more comprehensive reviews readers are referred elsewhere [ ].…”

Gut-training: the impact of two weeks repetitive gut-challenge during exercise on gastrointestinal status, glucose availability, fuel kinetics, and running performance

“…These symptoms led to greater compromised carbohydrate intake during exercise and greater time to event completion during a multi-stage running event (i.e., consecutive days of prolonged strenuous exercise) ; and similar symptom manifestation is reported to be a main contributing factor for endurance event withdrawal (Hoffman and Fogard 2011;Jeukendrup et al 2000;Stuempfle and Hoffman 2015). Additionally, it has previously been observed that female runners reported higher incidence of symptoms compared with male counterparts (ter Steege et al 2008).…”

Abdominal symptoms during physical exercise and the role of gastrointestinal ischaemia: a study in 12 symptomatic athletes

“…During the recovery phase, symptoms may consist of nausea, vomiting, bloody diarrhoea and even collapse 2–4. The severity of the symptoms varies from ‘mild but disturbing’ to ‘severe’ and may even lead to hospitalisation and emergency surgery 2 5…”