PMID- 2663744
OWN - NLM
STAT- MEDLINE
DCOM- 19890825
LR  - 20181217
IS  - 0172-4622 (Print)
IS  - 0172-4622 (Linking)
VI  - 10 Suppl 1
DP  - 1989 May
TI  - Effect of carbohydrate intake during warming-up on the regulation of blood 
      glucose during exercise.
PG  - S68-75
AB  - It has been shown that the intake of carbohydrate (CHO)-containing beverages 
      under resting conditions may lead to a rebound hypoglycemia and decreased 
      performance when exercise is performed thereafter. The aim of the present 
      investigation was to study the effect of CHO beverage consumption with different 
      CHO sources and different concentrations, during warming-up under practice-like 
      circumstances, on the regulation of blood glucose during exercise. Eighteen 
      highly trained cyclists consumed a standardized breakfast at 8:00 AM and 
      performed a warming-up procedure at 10:00 AM for 20 min. Warming-up was followed 
      by a 7-min break after which the subjects cycled for 45 min at a heart rate of 
      150. During warming-up a CHO-containing beverage (either sucrose, fructose, 
      maltodextrin, or glucose) or a placebo was consumed in random order. The test was 
      performed twice, with 300 ml and 600 ml intake, to study a possible dose-response 
      effect. The results of the study showed that warming-up and final exercise lead 
      to an increase of the catecholamines and a decrease of insulin. During the 7-min 
      break this response was reversed. Glucose and maltodextrin induced the same 
      insulin response. Increasing volume and higher CHO concentrations induced a 
      longer increase in blood glucose level compared with the placebo intake. The 
      results showed that intake of CHO-containing beverages during warming-up followed 
      by a small break does not lead to rebound hypoglycemia, independent of the amount 
      of CHO ingested, but instead increases blood glucose.
FAU - Brouns, F
AU  - Brouns F
AD  - Department of Human Biology, University of Limburg, Maastricht, The Netherlands.
FAU - Rehrer, N J
AU  - Rehrer NJ
FAU - Saris, W H
AU  - Saris WH
FAU - Beckers, E
AU  - Beckers E
FAU - Menheere, P
AU  - Menheere P
FAU - ten Hoor, F
AU  - ten Hoor F
LA  - eng
PT  - Clinical Trial
PT  - Journal Article
PT  - Randomized Controlled Trial
PT  - Review
PL  - Germany
TA  - Int J Sports Med
JT  - International journal of sports medicine
JID - 8008349
RN  - 0 (Blood Glucose)
RN  - 0 (Catecholamines)
RN  - 0 (Dietary Carbohydrates)
RN  - 0 (Insulin)
SB  - IM
MH  - Adult
MH  - Blood Glucose/*metabolism
MH  - Catecholamines/metabolism
MH  - Dietary Carbohydrates/*metabolism
MH  - *Exercise
MH  - Food, Formulated
MH  - Humans
MH  - Insulin/metabolism
MH  - Insulin Secretion
MH  - Male
RF  - 48
EDAT- 1989/05/01 00:00
MHDA- 1989/05/01 00:01
CRDT- 1989/05/01 00:00
PHST- 1989/05/01 00:00 [pubmed]
PHST- 1989/05/01 00:01 [medline]
PHST- 1989/05/01 00:00 [entrez]
AID - 10.1055/s-2007-1024956 [doi]
PST - ppublish
SO  - Int J Sports Med. 1989 May;10 Suppl 1:S68-75. doi: 10.1055/s-2007-1024956.