The GIT motility constituents such as migrating motor complex in the stomach and the one way peristaltic movements in small intestine are significantly influenced by the bacterial colonization. Moreover, the decrease of intestinal motility may cause a small intestinal bacterial overgrowth (SIBO). Therefore the use of Lactobacillus or Bifidobacterium, which caused an enhancement in intestinal contractility could be of interest in the modification of several functions of the upper GIT including gastric emptying, probiotics-induced normalization of motor disorders associated with IBS causing gastrointestinal dysfunction
