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Nutrients. 2018 Jun 24;10(7). pii: E811. doi: 10.3390/nu10070811.

Prevalence, Severity and Potential Nutritional Causes of Gastrointestinal Symptoms during a Marathon in Recreational Runners.

Author information

1
Research Institute for Sport and Exercise Sciences, Liverpool John Moores University, Liverpool L3 5UA, UK. j.pugh@2014.ljmu.ac.uk.
2
School of Health Sciences, Liverpool Hope University, Liverpool L16 9JD, UK. j.p.morton@ljmu.ac.uk.
3
Homerton University Hospital NHS Foundation Trust, London E9 6SR, UK. kirkb@hope.ac.uk.
4
Research Institute for Sport and Exercise Sciences, Liverpool John Moores University, Liverpool L3 5UA, UK. robert.fearn@nhs.net.
5
Research Institute for Sport and Exercise Sciences, Liverpool John Moores University, Liverpool L3 5UA, UK. G.L.Close@ljmu.ac.uk.

Abstract

The purpose of the present study was to investigate the prevalence of gastrointestinal symptoms (GIS) amongst recreational runners during a marathon race, and potential nutritional factors that may contribute. Recreational runners of the 2017 Liverpool (n = 66) and Dublin (n = 30) marathons were recruited. GIS were reported post-marathon and we considered GIS in the 7 days prior to the marathon and during the marathon using the Gastrointestinal Symptom Rating Scale (GSRS). Nutritional intake was recorded using food diaries for the day before the race, morning of the race, and during the race; 43% of participants reported moderate (&ge;4) GIS in the 7 days prior to the marathon and 27% reported moderate symptoms during the marathon with most common symptoms being flatulence (16%) during training, and nausea (8%) during the marathon race. Correlations between all nutritional intake and GIS were not statistically significant (p > 0.05). There were significant correlations between total GIS score (r = 0.510, p < 0.001), upper GIS score (r = 0.346, p = 0.001) and lower GIS score (r = 0.483, p < 0.001) in training and during the marathon. There appears to be a modest prevalence of GIS in recreational runners, in the week prior to a marathon and during marathon running, although there was no association with nutritional intake before or during the race.

KEYWORDS:

carbohydrates; gastrointestinal symptoms; marathon running; sports nutrition

PMID:
29937533
PMCID:
PMC6073243
DOI:
10.3390/nu10070811
[Indexed for MEDLINE]
Free PMC Article

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