title: Circulating gastrointestinal hormone changes in marathon running.
abstract: The purpose of this study was to observe the effect of marathon running on the release of gastrointestinal hormones and whether these might be related to gastrointestinal disturbances in marathon runners. Vasoactive intestinal polypeptide, gastrin, secretin, pancreatic polypeptide, neurokinin A, pancreastatin, insulin and glucagon-like peptide 1 were measured before, immediately upon finishing and 30 min after the race. Twenty-six competitors of the 1992 Belfast Marathon volunteered for this study. They had a mean age of 37 years and a mean finishing time of 239 min. Eight of the subjects complained of gastrointestinal distress during the race. The circulating concentration of all the GI hormones measured, except insulin were significantly elevated after the race. There was no significant change in glucose levels at the finish of the race. Statistical analysis revealed no direct relationship between the large increases in hormone levels and the occurrence of GI symptoms. These results show that GI hormone concentrations are affected by marathon running. Mechanisms of release and possible roles are discussed.
authors.affiliation: Department of Medicine, Queen's University of Belfast, N. Ireland.
authors.forename: A M
authors.initials: AM
authors.lastname: O'Connor
authors.forename: C F
authors.initials: CF
authors.lastname: Johnston
authors.forename: K D
authors.initials: KD
authors.lastname: Buchanan
authors.forename: C
authors.initials: C
authors.lastname: Boreham
authors.forename: T R
authors.initials: TR
authors.lastname: Trinick
authors.forename: C J
authors.initials: CJ
authors.lastname: Riddoch
mesh_terms: D000328:Adult; D053379:Chromogranin A; D005260:Female; D005755:Gastrins / Q000097:blood; D005768:Gastrointestinal Hormones / Q000097:blood*; D005934:Glucagon / Q000097:blood; D052216:Glucagon-Like Peptide 1; D006801:Humans; D007328:Insulin / Q000097:blood; D008297:Male; D008875:Middle Aged; D015288:Neurokinin A / Q000097:blood; D010187:Pancreatic Hormones / Q000097:blood; D010191:Pancreatic Polypeptide / Q000097:blood; D010446:Peptide Fragments / Q000097:blood; D010807:Physical Endurance / Q000502:physiology*; D011498:Protein Precursors / Q000097:blood; D012420:Running / Q000502:physiology*; D012633:Secretin / Q000097:blood; D014660:Vasoactive Intestinal Peptide / Q000097:blood
chemical_list: D053379:Chromogranin A; D005755:Gastrins; D005768:Gastrointestinal Hormones; D007328:Insulin; D010187:Pancreatic Hormones; D010446:Peptide Fragments; D011498:Protein Precursors; C050836:pancreastatin; D012633:Secretin; D014660:Vasoactive Intestinal Peptide; D010191:Pancreatic Polypeptide; D015288:Neurokinin A; D052216:Glucagon-Like Peptide 1; D005934:Glucagon