Gastrointestinal complaints are very common among endurance athletes and are one of the main causes of underperformance in endurance events. Runner Gastrointestinal tract (GIT) distress has two main factors:
The combination of reduced blood flow and dehydration puts the colon under great pressure. This can result to symptoms such as stomach cramps, vomiting, nausea and bloating. However, appropriate nutritional choices can reduce the risk of gastrointestinal discomfort during exercise. Here are recommendations that may help you minimize the risk of experiencing GI problems during your race:
Prado De Oliveira,E., Burini,R.C., Jeukendruo,A., (2014) .Gastrointestinal Complaints During Exercise: Prevalence, Etiology, and Nutritional Recommendations. Sports Medicine. 44 ( 1), 79-85.
Van Wijck,K., Lenaerts,K., Van Bijnen, A., Boonen,B. Van Loon, L., , LUC J. C; Dejong,C., (2012) Aggravation of Exercise-induced intestinal injury by Ibuprofen in athletes. Medicine & science in Sports & Exercise. 44 (12) p 2257-2262.