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Macronutrient Consumption Prior to, and During, Mountain Marathon Events

Mahon, EA and Hackett, AF and Stott, TA and George, KP and Davies, IG (2014) Macronutrient Consumption Prior to, and During, Mountain Marathon Events. American Journal of Sports Science, 2 (1). pp. 5-12. ISSN 2330-8540

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Abstract

Participation in ultra-endurance events such as mountain marathons is increasing, yet analysis of the nutritional intake and requirements of this group of athletes have received relatively little attention. This field study examined athletes’ food intake prior to, and during a mountain marathon event to assess compliance with recommendations and to identify associations with performance. Nineteen male athletes competing in the Longmynd Hike (LH) completed a 7-day food diary in the week prior to the event and a weighed food inventory of all items consumed during the event. Despite reported intentions to increase carbohydrate (CHO) consumption in the week prior to the event, there was no significant change in consumption across the week. The mean daily CHO intake of 4.5 g/kg/d was below that recommended to effectively enhance glycogen stores. CHO and energy consumption prior to the event were positively associated with performance [energy (kJ/kg/d): r = .56, p = 0.03; CHO (g/kg/d): r = .54, p = 0.04]. Energy and CHO consumption during the event were also positively correlated with performance [energy (kJ/kg/h): r = .80, p < 0.001; CHO (g/kg/h): r = .75, p = 0.001)], despite most participants again failing to meet recommendations for intake. Further research is needed to determine reasons for non-compliance with nutritional guidelines and to investigate to what extent type and timing of macronutrient intake during such events impacts on performance.

Item Type: Article
Subjects: R Medicine > RC Internal medicine > RC1200 Sports Medicine
Divisions: School of Sport Studies, Leisure and Nutrition
Sport & Exercise Sciences
Publisher: Science PG
Date Deposited: 10 Mar 2016 15:35
Last Modified: 04 Oct 2016 15:10
DOI or Identification number: 10.11648/j.ajss.20140201.12
URI: http://researchonline.ljmu.ac.uk/id/eprint/3151

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