This is a prospective, single-center study of adult (age ≥18 years) participants undergoing high-resolution esophageal manometry to assess the optimal method of diaphragmatic breathing. Included patients will complete two validated surveys, the Brief Esophageal Dysphagia Questionnaire (BEDQ) and the Gastroesophageal Reflux Disease Questionnaire (GERDQ). Patients will then undergo a standard protocol of supine and upright swallows with high-resolution manometry analyzed according to the Chicago Classification v4.0. After completion of the standard manometry protocol, participants will then perform a protocol assessing different techniques and positions for diaphragmatic breathing.
