Effect of three different chin-down maneuvers on Swallowing pressure in healthy young adults

Objectives/Hypothesis To determine the effects of three different chin‐down maneuvers on swallowing pressure (SP) in healthy young adults using high‐resolution manometry (HRM). Study Design Repeated measures with subjects serving as their own controls. Methods Twenty‐six healthy subjects (average age 26.4 [range 21–35] years) swallowed 5 mL of cold water to examine the maximum swallowing pressure (MSP) at the velopharynx, meso‐hypopharynx, and upper esophageal sphincter (UES), and to determine the duration of lowered SP at the UES using HRM. The subjects swallowed in the neutral position as a control and in the following three chin‐down positions: 1) head flexion (HF); 2) neck flexion (NF); and 3) combined head and neck flexion (HFNF). Results The MSP at the velopharynx and meso‐hypopharynx did not significantly differ among the three chin‐down positions. Upon swallowing in the NF posture, the MSP was significantly lower (P