Carbohydrate intake in form of gel is associated with increased gastrointestinal distress but not with performance differences when compared to liquid carbohydrate ingestion during simulated long-distance triathlon - Sareban, M.; Zügel, D.; Koehler, K.; Hartveg, P.; Zügel, M.; Schumann, U.; Steinacker, J. M.; Treff, G. (International Journal of Sport Nutrition and Exercise Metabolism, 2016)