Inclusion criteria:
Body mass index less than 30 kg/m2
The gastroenterologist approves the entry of participants into the exercise program
The presence of visible abdominal distension episodes (with the lack of non-functional disorders confirmation) and participant feels well in between these episodes
The ability of correct diaphragmatic breathing according to intended instruction without pain
Exclusion criteria:
Functional abdominal bloating without visible abdominal distension
Unremitting distension
Any kind of gastrointestinal system surgery
The history of any kind of surgery of stomach, different region of trunk, pelvis and lower limbs in past year
spinal deformities such as scoliosis and hyperkyphotic posture
The diagnosis of other functional gastrointestinal disorders (FGIDs)
The confirmation of non-functional causes
History of current back pain or back pain requiring medical attention in past year
Neurological disorders, Pulmonary disorders, rheumatology conditions, cardiovascular diseases, malignancy or chemotherapy
The history of the vertebral column or chest fracture
Use of medications equal or over 3 moths during prior 12 months that could affect muscle performance
Use of various antibiotics, bismuth, probiotic drugs during the last three months
current use of Mebeverine, Dimethicone, Dicyclomine, Hyoscine, Belladonna
Using special diets, such as ketogenic diet, vegetarianism, Fermentable, Oligosacharides, Disacharides, Monosacharides AND Polyols (FODMAP)
Smoking and alcohol consumption
Current pregnancy or lactating
Allergy to egg consumption
Difficulty in understanding of therapist's instruction (having a minimum education level of diploma)
Participating in sports activities regularly at least one year before the start of the study (frequency of 3 days of week and at least 30 min in day)
Hiatus hernia