PMID- 18202575
OWN - NLM
STAT- MEDLINE
DCOM- 20080415
LR  - 20220318
IS  - 0195-9131 (Print)
IS  - 0195-9131 (Linking)
VI  - 40
IP  - 2
DP  - 2008 Feb
TI  - Superior endurance performance with ingestion of multiple transportable 
      carbohydrates.
PG  - 275-81
LID - 10.1249/mss.0b013e31815adf19 [doi]
AB  - INTRODUCTION: The aim of the present study was to investigate the effect of 
      ingesting a glucose plus fructose drink compared with a glucose-only drink (both 
      delivering carbohydrate at a rate of 1.8 g.min(-1)) and a water placebo on 
      endurance performance. METHODS: Eight male trained cyclists were recruited (age 
      32 +/- 7 yr, weight 84.4 +/- 6.9 kg, .VO(2max) 64.7 +/- 3.9 mL.kg(-1).min(-1), 
      Wmax 364 +/- 31 W). Subjects ingested either a water placebo (P), a glucose 
      (G)-only beverage (1.8 g.min(-1)), or a glucose and fructose (GF) beverage in a 
      2:1 ratio (1.8 g.min(-1)) during 120 min of cycling exercise at 55% Wmax followed 
      by a time trial in which subjects had to complete a set amount of work as quickly 
      as possible (approximately 1 h). Every 15 min, expired gases were analyzed and 
      blood samples were collected. RESULTS: Ingestion of GF resulted in an 8% quicker 
      time to completion during the time trial (4022 s) compared with G (3641 s) and a 
      19% improvement compared with W (3367 s). Total carbohydrate (CHO) oxidation was 
      not different between GF (2.54 +/- 0.25 g.min(-1)) and G (2.50 g.min(-1)), 
      suggesting that GF led to a sparing of endogenous CHO stores, because GF has been 
      shown to have a greater exogenous CHO oxidation than G. CONCLUSION: Ingestion of 
      GF led to an 8% improvement in cycling time-trial performance compared with 
      ingestion of G.
FAU - Currell, Kevin
AU  - Currell K
AD  - Human Performance Laboratory, School of Sport and Exercise Sciences, University 
      of Birmingham, Birmingham, UK.
FAU - Jeukendrup, Asker E
AU  - Jeukendrup AE
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
PL  - United States
TA  - Med Sci Sports Exerc
JT  - Medicine and science in sports and exercise
JID - 8005433
RN  - 0 (Dietary Carbohydrates)
RN  - 0 (Placebos)
RN  - 30237-26-4 (Fructose)
RN  - IY9XDZ35W2 (Glucose)
SB  - IM
MH  - Adult
MH  - Bicycling
MH  - Dietary Carbohydrates/*administration & dosage/*metabolism
MH  - Drinking
MH  - Exercise Test
MH  - Fructose/administration & dosage/metabolism
MH  - Glucose/administration & dosage/metabolism
MH  - Humans
MH  - Male
MH  - Physical Endurance/*physiology
MH  - Placebos
MH  - Task Performance and Analysis
MH  - United Kingdom
EDAT- 2008/01/19 09:00
MHDA- 2008/04/16 09:00
CRDT- 2008/01/19 09:00
PHST- 2008/01/19 09:00 [pubmed]
PHST- 2008/04/16 09:00 [medline]
PHST- 2008/01/19 09:00 [entrez]
AID - 10.1249/mss.0b013e31815adf19 [doi]
PST - ppublish
SO  - Med Sci Sports Exerc. 2008 Feb;40(2):275-81. doi: 10.1249/mss.0b013e31815adf19.