Livovsky Dan M, Barber Claudia, Barba Elizabeth, Accarino Anna, Azpiroz Fernando
Digestive System Research Unit, University Hospital Vall d'Hebron, Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (Ciberehd), Departament de Medicina, Universitat Autònoma de Barcelona, 08193 Bellaterra (Cerdanyola del Vallès), Spain.
Faculty of Medicine, Hebrew University of Jerusalem, Digestive Diseases Institute, Shaare Zedek Medical Center, Jerusalem 9103401, Israel.
Nutrients. 2021 Feb 18;13(2):658. doi: 10.3390/nu13020658.
Postprandial objective abdominal distention is frequently associated with a subjective sensation of abdominal bloating, but the relation between both complaints is unknown. While the bloating sensation has a visceral origin, abdominal distention is a behavioral somatic response, involving contraction and descent of the diaphragm with protrusion of the anterior abdominal wall. Our aim was to determine whether abdominal distention influences digestive sensations. In 16 healthy women we investigated the effect of intentional abdominal distention on experimentally induced bloating sensation (by a meal overload). Participants were first taught to produce diaphragmatic contraction and visible abdominal distention. After a meal overload, sensations of bloating (0 to 10) and digestive well-being (-5 to + 5) were measured during 30-s. maneuvers alternating diaphragmatic contraction and diaphragmatic relaxation. Compared to diaphragmatic relaxation, diaphragmatic contraction was associated with diaphragmatic descent (by 21 + 3 mm; < 0.001), objective abdominal distension (32 + 5 mm girth increase; = 0.001), more intense sensation of bloating (7.3 + 0.4 vs. 8.0 + 0.4 score; = 0.010) and lower digestive well-being (-0.9 + 0.5 vs. -1.9 + 0.5 score; = 0.028). These results indicate that somatic postural tone underlying abdominal distention worsens the perception of visceral sensations (ClinicalTrials.gov ID: NCT04691882).
餐后客观腹胀常伴有主观的腹部膨胀感，但这两种症状之间的关系尚不清楚。虽然膨胀感源于内脏，但腹胀是一种行为性躯体反应，涉及膈肌收缩和下降以及前腹壁突出。我们的目的是确定腹胀是否会影响消化感觉。在16名健康女性中，我们研究了故意腹胀对实验性诱发的膨胀感（通过进食过量）的影响。参与者首先学会产生膈肌收缩和可见的腹部膨胀。在进食过量后，在30秒内测量膨胀感（0至10分）和消化舒适度（-5至+5分），期间交替进行膈肌收缩和膈肌放松动作。与膈肌放松相比，膈肌收缩与膈肌下降（下降21 + 3毫米；<0.001）、客观腹部膨胀（腹围增加32 + 5毫米；= 0.001）、更强烈的膨胀感（评分7.3 + 0.4对8.0 + 0.4；= 0.010）以及更低的消化舒适度（评分-0.9 + 0.5对-1.9 + 0.5；= 0.028）相关。这些结果表明，腹胀背后的躯体姿势张力会恶化内脏感觉的感知（ClinicalTrials.gov标识符：NCT04691882）。
