Document Detail


Race-day carbohydrate intakes of elite triathletes contesting olympic-distance triathlon events.
MedLine Citation:
PMID:  20739718     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The aim of this study was to investigate the prerace and during-race carbohydrate intakes of elite-level triathletes contesting draft-legal Olympic-distance triathlon (ODT) events. Self-reported prerace and during-race nutrition data were collected at 3 separate ODT events from 51 elite senior and under-23 triathletes. One hundred twenty-nine observations of food and fluid intake representing actual prerace (n = 62) and during-race (n = 67) nutrition practices from 36 male and 15 female triathletes were used in the final analysis of this study. Female triathletes consumed significantly more carbohydrate on the morning before race start when corrected for body mass and race start time than their male counterparts (p < .05). Male and female triathletes consumed 26% more energy (kJ/kg) and 24% more carbohydrate (g/kg) when commencing a race after midday (1:00-1:30 p.m.) than for a late morning (11:00-11:15 a.m.) race start. During the race, triathletes consumed less than 60 g of carbohydrate on 66% of occasions, with average total race intakes of 48 ± 25 and 49 ± 25 g carbohydrate for men and women, respectively. Given average race times of 1:57:07 hr and 2:08:12 hr, hourly carbohydrate intakes were ~25 g and ~23 g for men and women, respectively. Although most elite ODT triathletes consume sufficient carbohydrate to meet recommended prerace carbohydrate intake guidelines, during-race carbohydrate intakes varied considerably, with many failing to meet recommended levels.
Authors:
Gregory R Cox; Rodney J Snow; Louise M Burke
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  International journal of sport nutrition and exercise metabolism     Volume:  20     ISSN:  1526-484X     ISO Abbreviation:  Int J Sport Nutr Exerc Metab     Publication Date:  2010 Aug 
Date Detail:
Created Date:  2010-08-26     Completed Date:  2010-11-02     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  100939812     Medline TA:  Int J Sport Nutr Exerc Metab     Country:  United States    
Other Details:
Languages:  eng     Pagination:  299-306     Citation Subset:  IM    
Affiliation:
Sports Nutrition, Australian Institute of Sport, Belconnen, ACT, Australia.
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MeSH Terms
Descriptor/Qualifier:
Adult
Bicycling / physiology
Body Weight / physiology
Dietary Carbohydrates / administration & dosage*,  metabolism
Drinking*
Energy Intake / physiology
Energy Metabolism / physiology*
Female
Humans
Male
Nutrition Policy
Nutritional Physiological Phenomena / physiology*
Nutritional Requirements
Physical Endurance / physiology*
Running / physiology
Sex Factors
Swimming / physiology
Time Factors
Young Adult
Chemical
Reg. No./Substance:
0/Dietary Carbohydrates

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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