The esophageal manometry will be performed in the motility lab at the Shands Endoscopy Center by passing a small tube into the patients nose, down the food pipe and into the stomach. The participants will be instructed to swallow a determined volume of Gatorade,depending on the protocol being followed. All participants will be starting in the supine position followed by semi-recumbent,sitting, then standing up. When the esophageal manometry is finished, the tube is removed and participation in this study is complete.
