Influence of capsaicin infusion on secondary peristalsis in patients with gastroesophageal reflux disease

Figure 4 Influence of repeated capsaicin-containing red pepper sauce on distension threshold to induce secondary peristalsis during rapid air injection. A: The threshold volume for inducing secondary peristalsis is significantly greater after second infusion of capsaicin than first infusion of capsaicin (P = 0.002); B: Secondary peristalsis is triggered less frequently after second infusion of capsaicin than first infusion of capsaicin (P = 0.02). Values are expressed as mean ± SE of the mean or median with interquartile range. Line represents the mean or median value.