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

Figure 2 Influence of 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 decreased after capsaicin when compared with saline infusion (P = 0.001); B: Secondary peristalsis is triggered more frequently after capsaicin infusion than saline infusion (P = 0.01). Values are expressed as mean ± SE of the mean or median with interquartile range. Line represents the mean or median value.