Abdominal wall muscle activity in irritable bowel syndrome with bloating

The American Journal of Gastroenterology
P G McManisN J Talley

Abstract

Recurrent episodes of bloating and visible abdominal distension are common and distressing in irritable bowel syndrome, but the mechanisms are unknown. Patients often note that the distension is most pronounced in the upright posture, suggesting that the bloating may be the result of a decrease or absence of the normal rise in electromyograph activity in the abdominal wall muscles when standing. There are no reports of noninvasive electromyograph recordings of abdominal wall muscles in irritable bowel syndrome. We examined the hypothesis that abdominal distension is the result of relaxation of anterior abdominal wall musculature. Studies were performed on patients with irritable bowel syndrome and a history of visible distension (n = 11, mean age 48.6 yr, body mass index 24.8) and normal volunteers (n = 13, mean age 39.9 yr, body mass index 24.6). Surface recordings of muscle activity were made while subjects were lying, performing voluntary contraction of the abdominal wall, and standing. The examiners were blind as to the clinical status of the subjects. There were no differences in abdominal wall muscle activity (by electromyograph voltage) when comparing patients with irritable bowel syndrome to normal volunteers (e.g., rel...Continue Reading

Citations

Oct 23, 2002·Alimentary Pharmacology & Therapeutics·S ZarD Kumar
May 10, 2007·Gut·R SpillerUNKNOWN Clinical Services Committee of The British Society of Gastroenterology
Aug 5, 2005·Neurogastroenterology and Motility : the Official Journal of the European Gastrointestinal Motility Society·L A Houghton, P J Whorwell
Aug 13, 2004·Neurogastroenterology and Motility : the Official Journal of the European Gastrointestinal Motility Society·B MarinoG Basilisco
Jun 6, 2009·The American Journal of Gastroenterology·Anurag AgrawalPeter J Whorwell
Nov 8, 2013·Journal of Neurogastroenterology and Motility·A Young SeoDong Hyun Oh
Sep 7, 2005·Gastroenterology·Fernando Azpiroz, Juan-R Malagelada

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