Effect of Abdominal Massage Versus Visceral Manipulation on Constipation

Inclusion Criteria: * Patients of both sex with age ranges (20-40) years old. * having a diagnosis of functional constipation according to Rome IV criteria onset of constipation symptoms from 6-12 months . * having body mass index 18.5-29.9 kg/m2 , waist height ratio \</=0.5 * Subjects bothered by their constipation Exclusion Criteria: * Pregnancy. * Having comorbidities (chronic pelvic pain, neurological (Parkinson's, multiple sclerosis, spinal cord lesion, etc.), metabolic / endocrine (diabetes mellitus, hypercalcemia, hypothyroid, etc.), cardiorespiratory diseases * Health problems which may prevent standing from sitting, walking (orthopedic, neurological, cardiorespiratory, etc.) * Malignancy, acute inflammation, intestinal tumor * History of gastrointestinal and pelvic surgery or spinal surgery other than cholecystectomy, appendectomy, or hysterectomy * Visual, auditory or cognitive problems which may prevent participation to the study. * Tumor, presence of skin problems in the application area * Presence of laxative use for functional constipation in the last four weeks or patients on laxative therapy. * Alarm symptoms (unexplained, more than 10% weight loss in 3 months, hemorrhoids and anal fissures, rectal bleeding, family history of colon cancer)