PMID- 15570147
OWN - NLM
STAT- MEDLINE
DCOM- 20050225
LR  - 20220318
IS  - 0195-9131 (Print)
IS  - 0195-9131 (Linking)
VI  - 36
IP  - 12
DP  - 2004 Dec
TI  - The effect of carbohydrate mouth rinse on 1-h cycle time trial performance.
PG  - 2107-11
AB  - PURPOSE AND METHOD: To investigate the possible role of carbohydrate (CHO) 
      receptors in the mouth in influencing exercise performance, seven male and two 
      female endurance cyclists (VO(2max) 63.2 +/- 2.7 (mean +/- SE) 
      mL.kg*(-1).min(-1)) completed two performance trials in which they had to 
      accomplish a set amount of work as quickly as possible (914 +/- 40 kJ). On one 
      occasion a 6.4% maltodextrin solution (CHO) was rinsed around the mouth for every 
      12.5% of the trial completed. On the other occasion, water (PLA) was rinsed. 
      Subjects were not allowed to swallow either the CHO solution or water, and each 
      mouthful was spat out after a 5-s rinse. RESULTS: Performance time was 
      significantly improved with CHO compared with PLA (59.57 +/- 1.50 min vs 61.37 
      +/- 1.56 min, respectively, P = 0.011). This improvement resulted in a 
      significantly higher average power output during the CHO compared with the PLA 
      trial (259 +/- 16 W and 252 +/- 16 W, respectively, P = 0.003). There were no 
      differences in heart rate or rating of perceived exertion (RPE) between the two 
      trials (P > 0.05). CONCLUSION: The results demonstrate that carbohydrate mouth 
      rinse has a positive effect on 1-h time trial performance. The mechanism 
      responsible for the improvement in high-intensity exercise performance with 
      exogenous carbohydrate appears to involve an increase in central drive or 
      motivation rather than having any metabolic cause. The nature and role of 
      putative CHO receptors in the mouth warrants further investigation.
FAU - Carter, James M
AU  - Carter JM
AD  - Human Performance Laboratory, School of Sport and Exercise Sciences, The 
      University of Birmingham, Edgbaston, B15 2TT, Birmingham, UK.
FAU - Jeukendrup, Asker E
AU  - Jeukendrup AE
FAU - Jones, David A
AU  - Jones DA
LA  - eng
PT  - Clinical Trial
PT  - Controlled Clinical Trial
PT  - Journal Article
PL  - United States
TA  - Med Sci Sports Exerc
JT  - Medicine and science in sports and exercise
JID - 8005433
RN  - 0 (Mouthwashes)
RN  - 0 (Polysaccharides)
RN  - 7CVR7L4A2D (maltodextrin)
SB  - IM
MH  - Adult
MH  - Bicycling/*physiology
MH  - Female
MH  - Humans
MH  - Male
MH  - Motivation
MH  - Mouth/physiology
MH  - *Mouthwashes
MH  - Oxygen Consumption
MH  - Physical Endurance/*physiology
MH  - Polysaccharides/*administration & dosage/*pharmacology
MH  - Single-Blind Method
EDAT- 2004/12/01 09:00
MHDA- 2005/02/26 09:00
CRDT- 2004/12/01 09:00
PHST- 2004/12/01 09:00 [pubmed]
PHST- 2005/02/26 09:00 [medline]
PHST- 2004/12/01 09:00 [entrez]
AID - 00005768-200412000-00015 [pii]
AID - 10.1249/01.mss.0000147585.65709.6f [doi]
PST - ppublish
SO  - Med Sci Sports Exerc. 2004 Dec;36(12):2107-11. doi: 
      10.1249/01.mss.0000147585.65709.6f.