There is a clear need for a novel method that can readily assess gastric motility in daily clinical practice. Isometric determination of the stomach motility would avoid the use of a large flaccid balloon while still being affordable. The aim of this study was to determine the optimal balloon characteristics that enable to measure motility-induced pressure changes in healthy volunteers.

Inclusion Criteria:

• They are between 18-60 years old.
• Male and female.
• Patients must provide witnessed written informed consent prior to any study procedures being performed.

Exclusion Criteria:

• They are older than 60 years old and younger than 18 years.
• They are taking medication.
• Have severely decreased kidney function.
• Have severely decreased liver function.
• Have severe heart disease, for example a history of irregular heartbeats, angina or heart attack.
• Have severe lung disease.
• Have severe psychiatric illness or neurological illness.
• Have any gastrointestinal disease.
• Have any dyspeptic symptoms.
• Women that are pregnant or breastfeeding.