PMID- 2759074
OWN - NLM
STAT- MEDLINE
DCOM- 19890918
LR  - 20190828
IS  - 0301-5548 (Print)
IS  - 0301-5548 (Linking)
VI  - 58
IP  - 5
DP  - 1989
TI  - Effects of fluid, electrolyte and substrate ingestion on endurance capacity.
PG  - 481-6
AB  - The availability of carbohydrate (CHO) as a substrate for the exercising muscles 
      is known to be a limiting factor in the performance of prolonged cycle exercise, 
      and provision of exogenous CHO in the form of glucose can increase endurance 
      capacity. The present study examined the effects of ingestion of fluids and of 
      CHO in different forms on exercise performance. Six male volunteers exercised to 
      exhaustion on a cycle ergometer at a workload which required approximately 70% of 
      Vo2max. After one preliminary trial, subjects performed this exercise test on six 
      occasions, one week apart. Immediately before exercise, and at 10-min intervals 
      throughout, subjects ingested 100 ml of one of the following: control (no drink), 
      water, glucose syrup, fructose syrup, glucose-fructose syrup or a dilute 
      glucose-electrolyte solution. Each of the syrup solutions contained approximately 
      36 g CHO per 100 ml; the isotonic glucose-electrolyte solution contained 4 g 
      glucose per 100 ml. A randomised Latin square order of administration of trials 
      was employed. Expired air samples for determination of Vo2, respiratory exchange 
      ratio and rate of CHO oxidation were collected at 15-min intervals. Venous blood 
      samples were obtained before and after exercise. Subjects drinking the isotonic 
      glucose-electrolyte solution exercised longer (90.8 (12.4) min, mean (SEM] than 
      on the control test (70.2 (8.3) min; p less than 0.05).(ABSTRACT TRUNCATED AT 250 
      WORDS)
FAU - Maughan, R J
AU  - Maughan RJ
AD  - Department of Environmental and Occupational Medicine, University Medical School, 
      Aberdeen, Scotland.
FAU - Fenn, C E
AU  - Fenn CE
FAU - Leiper, J B
AU  - Leiper JB
LA  - eng
PT  - Clinical Trial
PT  - Journal Article
PT  - Randomized Controlled Trial
PL  - Germany
TA  - Eur J Appl Physiol Occup Physiol
JT  - European journal of applied physiology and occupational physiology
JID - 0410266
RN  - 0 (Blood Glucose)
RN  - 0 (Electrolytes)
RN  - 0 (Solutions)
RN  - 30237-26-4 (Fructose)
RN  - IY9XDZ35W2 (Glucose)
SB  - IM
MH  - Adult
MH  - Blood Glucose/analysis
MH  - Carbohydrate Metabolism
MH  - *Drinking
MH  - Electrolytes/*pharmacology
MH  - Fructose/*pharmacology
MH  - Glucose/*pharmacology
MH  - Humans
MH  - Male
MH  - Physical Endurance/*drug effects
MH  - Solutions
MH  - Sweating/drug effects
EDAT- 1989/01/01 00:00
MHDA- 1989/01/01 00:01
CRDT- 1989/01/01 00:00
PHST- 1989/01/01 00:00 [pubmed]
PHST- 1989/01/01 00:01 [medline]
PHST- 1989/01/01 00:00 [entrez]
AID - 10.1007/BF02330701 [doi]
PST - ppublish
SO  - Eur J Appl Physiol Occup Physiol. 1989;58(5):481-6. doi: 10.1007/BF02330701.