A case study evaluation of competitors undertaking an antarctic ultra-endurance event: nutrition, hydration and body composition variables

Extreme Physiology & Medicine
Scott PaulinIan Davis

Abstract

The nutritional demands of ultra-endurance racing are well documented. However, the relationship between nutritional consumption and performance measures are less obvious for athletes competing in Polar conditions. Therefore, the aim of this study was to evaluate dietary intake, hydration status, body composition and performance times throughout an 800-km Antarctic race. The event organisers declared that 17 competitors would participate in the South Pole race. Of the 17 competitors, pre-race data were collected from 13 participants (12 males and 1 female (M ± SD): age: 40.1 ± 8.9 years; weight: 83.9 ± 10.3 kg; and body fat percentage: 21.9 ± 3.8%). Dietary recall, body composition and urinary osmolarity were assessed pre-race, midway checkpoint and end race. Data were compared on the basis of fast finishers (the Norwegian team (n = 3) who won in a record of 14 days) and slower finishers (the remaining teams (n = 10) reaching the South Pole between 22 and 28 days). The percentage contribution of macronutrients to daily energy intake for all participants was as follows: carbohydrate (CHO) = 23.7% (221 ± 82 g.day(-1)), fat = 60.6% (251 ± 127 g.day(-1)) and protein = 15.7% (117 ± 52 g.day(-1)). Energy demands were closer met by fa...Continue Reading

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Citations

Sep 9, 2015·Extreme Physiology & Medicine·Michael P W Grocott, Hugh M Montgomery
Oct 16, 2018·Research in Sports Medicine·C BlennerhassettS A Sparks
Dec 19, 2018·Nutrients·Pantelis T NikolaidisBeat Knechtle
Jan 29, 2019·Frontiers in Physiology·Daniela ChlíbkováJosef Bednář
Sep 24, 2020·Nutrients·Maria Michela CesareRossella Di Stefano
May 30, 2019·Frontiers in Physiology·Daniela ChlíbkováJosef Bednář
Jun 4, 2019·Frontiers in Physiology·Nicholas B TillerLee M Romer
Nov 30, 2016·Extreme Physiology & Medicine·Eric Williamson
Mar 16, 2019·International Journal of Environmental Research and Public Health·Pantelis T NikolaidisBeat Knechtle

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