Journal article
Function of the lower esophageal sphincter during and after high-intensity exercise
Medicine and science in sports and exercise, Vol.37(10), pp.1728-1733
2005
PMID: 16260973
Abstract
Introduction:
Gastroesophageal reflux is commonly reported during high-intensity endurance exercise in otherwise healthy asymptomatic individuals. Although the mechanisms underlying this exercise-induced reflux are unknown, it most likely reflects a failure of the primary barrier to reflux, the lower esophageal sphincter (LES). The aim of this study was to determine the influence of exercise with and without ingestion of fluid on the LES barrier pressure in asymptomatic individuals.
Methods:
Seven recreational cyclists (five males) performed four 5-min bouts of cycle exercise at 90% V̇O2max, each separated by 1–3 min. Before, during, and after exercise, measurements were made of esophageal pressure (Pes), LES pressure (Ples), and gastric pressure (Pg). LES barrier pressure (Pb) was defined as the difference between Ples and Pg. Following exercise bouts 2 and 3, subjects ingested 600 and 200 mL of a sports drink, respectively.
Results:
Pb before exercise was 13.1 ± 5.2 cm H2O (± SD), decreased to 6.5 ± 4.6 cm H2O during each of the four bouts of high-intensity exercise (P < 0.05), and remained decreased at 7.4 ± 3.5 cm H2O after exercise (P < 0.05).
Conclusions:
High-intensity exercise reduces LES Pb during exercise in asymptomatic individuals. The magnitude of this exercise-induced impairment in LES function is unaffected by ingestion of a sports drink.
Details
- Title
- Function of the lower esophageal sphincter during and after high-intensity exercise
- Authors/Creators
- Kathleen J Maddison - The University of Western AustraliaKelly L ShepherdDavid R Hillman - Sir Charles Gairdner HospitalPeter R Eastwood - School of Anatomy, Physiology and Human Biology
- Publication Details
- Medicine and science in sports and exercise, Vol.37(10), pp.1728-1733
- Identifiers
- 991005592648507891
- Copyright
- © 2005 The American College of Sports Medicine
- Murdoch Affiliation
- Vice Chancellery
- Language
- English
- Resource Type
- Journal article
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Source: InCites
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InCites Highlights
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- Collaboration types
- Domestic collaboration
- Citation topics
- 1 Clinical & Life Sciences
- 1.95 Gastrointestinal & Esophageal Diseases
- 1.95.541 GERD & Achalasia
- Web Of Science research areas
- Sport Sciences
- ESI research areas
- Clinical Medicine