PMID- 16521844
OWN - NLM
STAT- MEDLINE
DCOM- 20060328
LR  - 20191109
IS  - 1526-484X (Print)
IS  - 1526-484X (Linking)
VI  - 15
IP  - 6
DP  - 2005 Dec
TI  - Effect of carbohydrate intake on half-marathon performance of well-trained 
      runners.
PG  - 573-89
AB  - Eighteen highly-trained runners ran two half marathons in mild environmental 
      conditions, 3 wk apart, consuming either 426 +/- 227 mL of a flavored placebo 
      drink (PLACEBO) or an equivalent volume of water (386 +/- 185 mL) and a 
      commercial gel (GEL) supplying 1.1 +/- 0.2 g/kg body mass (BM) carbohydrate 
      (CHO). Voluntary consumption of this fluid was associated with a mean BM change 
      of approximately 2.4%. Runners performed better in their second race by 0.9% or 
      40 s (P = 0.03). Three runners complained of gastrointestinal discomfort in GEL 
      trial, which produced a clear impairment of half-marathon performance by 2.4% or 
      105 s (P=0.03). The effect of GEL on performance was trivial: time was improvedby 
      0.3% or 14 s compared with PLACEBO (P = 0.52). Consuming the gel was associated 
      with a 2.4% slower time through the 2 x 200 m feed zone; adding a trivial 
      approximately 2 s to race time. Although benefits to half marathon performance 
      were not detected, the theoretical improvement during 1-h exercise with CHO 
      intake merits further investigation.
FAU - Burke, Louise M
AU  - Burke LM
AD  - Dept of Sports Nutrition, Australian Institute of Sport, Belconnen, ACT, 
      Australia.
FAU - Wood, Clare
AU  - Wood C
FAU - Pyne, David B
AU  - Pyne DB
FAU - Telford, D Richard
AU  - Telford DR
FAU - Saunders, Philo U
AU  - Saunders PU
LA  - eng
PT  - Controlled Clinical Trial
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
PL  - United States
TA  - Int J Sport Nutr Exerc Metab
JT  - International journal of sport nutrition and exercise metabolism
JID - 100939812
RN  - 0 (Dietary Carbohydrates)
RN  - 0 (Gels)
SB  - IM
MH  - Abdominal Pain/epidemiology
MH  - Body Weight/drug effects/physiology
MH  - Cross-Over Studies
MH  - Dietary Carbohydrates/*administration & dosage/adverse effects
MH  - *Drinking
MH  - Gels
MH  - Humans
MH  - Male
MH  - Oxygen Consumption/*drug effects/physiology
MH  - Running/*physiology
MH  - Time Factors
EDAT- 2006/03/09 09:00
MHDA- 2006/03/29 09:00
CRDT- 2006/03/09 09:00
PHST- 2006/03/09 09:00 [pubmed]
PHST- 2006/03/29 09:00 [medline]
PHST- 2006/03/09 09:00 [entrez]
AID - 10.1123/ijsnem.15.6.573 [doi]
PST - ppublish
SO  - Int J Sport Nutr Exerc Metab. 2005 Dec;15(6):573-89. doi: 
      10.1123/ijsnem.15.6.573.