PMID- 8933488
OWN - NLM
STAT- MEDLINE
DCOM- 19970220
LR  - 20190830
IS  - 0195-9131 (Print)
IS  - 0195-9131 (Linking)
VI  - 28
IP  - 11
DP  - 1996 Nov
TI  - Effect of CHO ingestion on exercise metabolism and performance in different 
      ambient temperatures.
PG  - 1380-7
AB  - Two series of experiments were conducted to examine the effect of ingesting 
      beverages with differing carbohydrate (CHO) concentrations and osmolalities on 
      metabolism and performance during prolonged exercise in different environmental 
      conditions. In series 1, 12 subjects performed three cycling exercise trials to 
      fatigue at 70% VO2peak in either 33 degrees C (N = 6) (HT1) or 5 degrees C (N = 
      6) (CT). Subjects ingested either a 14% CHO solution (osmolality = 390 
      mosmol.1(-1) (HCHO); a 7% CHO solution (330 mosmol.1(-1) (NCHO) or a placebo (90 
      mosmol.1(-1) (CON1). In series 2, six subjects performed the same three trials at 
      33 degrees C (HT2), while ingesting either NCHO, a 4.2% CHO solution (240 
      mosmol.1(-1) (LCHO) or a placebo) (240 mosmol.1(-1) (CON2). Plasma glucose was 
      higher (P < 0.05) in HCHO than NCHO, which in turn was higher (P < 0.05) than 
      CON1 in both CT and HT1. Plasma glucose was lower (P < 0.05) in CON2 compared 
      with NCHO and LCHO in HT2. The fall in plasma volume was greater (P < 0.05) in 
      HCHO than other trials in both CT and HT1 but was not different when comparing 
      the three trials in HT2. Exercise time was not different when comparing the 
      trials in either HT1 or HT2 but was longer (P < 0.05) in NCHO compared with HCHO, 
      which, in turn, was longer (P < 0.05) than CON1 in CT. These data demonstrate 
      that, during prolonged exercise in the heat, fatigue is related to factors other 
      than CHO availability. In addition, during exercise in 5 degrees C a 7% CHO 
      solution is more beneficial for exercise performance than a 14% CHO solution.
FAU - Febbraio, M A
AU  - Febbraio MA
AD  - Department of Human Movement Science, Royal Melbourne Institute of Technology, 
      Bundoora, Australia. febbraio@eos.xx.rmit.edu.au
FAU - Murton, P
AU  - Murton P
FAU - Selig, S E
AU  - Selig SE
FAU - Clark, S A
AU  - Clark SA
FAU - Lambert, D L
AU  - Lambert DL
FAU - Angus, D J
AU  - Angus DJ
FAU - Carey, M F
AU  - Carey MF
LA  - eng
PT  - Clinical Trial
PT  - Journal Article
PT  - Randomized Controlled Trial
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 (Blood Glucose)
RN  - 0 (Carbohydrates)
RN  - 0 (Rehydration Solutions)
SB  - IM
MH  - Adult
MH  - Blood Glucose/analysis
MH  - *Carbohydrates
MH  - Exercise/*physiology
MH  - Female
MH  - Humans
MH  - Male
MH  - Oxygen Consumption
MH  - Physical Endurance/physiology
MH  - Plasma Volume
MH  - *Rehydration Solutions
MH  - *Temperature
EDAT- 1996/11/01 00:00
MHDA- 1996/11/01 00:01
CRDT- 1996/11/01 00:00
PHST- 1996/11/01 00:00 [pubmed]
PHST- 1996/11/01 00:01 [medline]
PHST- 1996/11/01 00:00 [entrez]
AID - 10.1097/00005768-199611000-00006 [doi]
PST - ppublish
SO  - Med Sci Sports Exerc. 1996 Nov;28(11):1380-7. doi: 
      10.1097/00005768-199611000-00006.