Document Detail

Influence of body posture on intestinal transit of gas.
MedLine Citation:
PMID:  12801953     Owner:  NLM     Status:  MEDLINE    
BACKGROUND: Patients describe that body posture may affect their abdominal bloating, distension, and flatulence, but whether changes in position have objectively demonstrable effects, either beneficial or deleterious, has not been investigated.
AIM: To determine the effect of body posture, upright versus supine, on intestinal transit of gas loads.
SUBJECTS: Eight healthy subjects without gastrointestinal symptoms.
METHODS: In each subject a gas mixture was continuously infused into the jejunum (12 ml/min) for three hours, and gas evacuation, clearance of a non- absorbable gaseous marker, perception, and abdominal girth were measured. Paired studies were randomly performed in each subject on separate days in the upright and supine positions.
RESULTS: In the upright position, intestinal gas retention was much smaller than when supine (13 (52) ml v 146 (75) ml retention at 60 minutes, respectively; p<0.05), and clearance of the gas marker was expedited (72 (10)% clearance v 49 (16)% at 60 minutes, respectively; p<0.05). The gas challenge test was well tolerated both in the upright and supine positions without abdominal distension.
CONCLUSION: Body posture has a significant influence on intestinal gas propulsion: transit is faster in the upright position than when supine.
R Dainese; J Serra; F Azpiroz; J-R Malagelada
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Publication Detail:
Type:  Clinical Trial; Journal Article; Randomized Controlled Trial; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, P.H.S.    
Journal Detail:
Title:  Gut     Volume:  52     ISSN:  0017-5749     ISO Abbreviation:  Gut     Publication Date:  2003 Jul 
Date Detail:
Created Date:  2003-06-12     Completed Date:  2003-08-19     Revised Date:  2014-07-28    
Medline Journal Info:
Nlm Unique ID:  2985108R     Medline TA:  Gut     Country:  England    
Other Details:
Languages:  eng     Pagination:  971-4     Citation Subset:  AIM; IM    
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MeSH Terms
Gastrointestinal Transit / physiology*
Intestines / physiology
Metabolic Clearance Rate
Posture / physiology*
Self Concept
Supine Position / physiology
Grant Support
Reg. No./Substance:

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