PMID- 3905395
OWN - NLM
STAT- MEDLINE
DCOM- 19860116
LR  - 20190829
IS  - 0301-5548 (Print)
IS  - 0301-5548 (Linking)
VI  - 54
IP  - 4
DP  - 1985
TI  - Effects of a 24-h carbohydrate-poor diet on metabolic and hormonal responses 
      during prolonged glucose-infused leg exercise.
PG  - 420-6
AB  - Extant literature dealing with metabolic and hormonal adaptations to exercise 
      following carbohydrate (CHO) reduced diets is not sufficiently precise to allow 
      researchers to partial out the effects of reduced blood glucose levels from other 
      general effects produced by low CHO diets. In order to shed light on this issue, 
      a study was conducted to examine the effects of a 24-h CHO-poor diet on substrate 
      and endocrine responses during prolonged (75 min; 60% Vo2max) glucose-infused leg 
      exercise. Eight subjects exercised on a cycle ergometer in the two following 
      conditions: 1) after a normal diet (CHON), and 2) after a 24-h low CHO diet 
      (CHOL). In both conditions, glucose was constantly infused intravenously (2.2 mg 
      . kg-1 . min-1) from the 10th to the 75th min of exercise in relatively small 
      amounts (10.4 +/- 0.8 g). No significant differences in blood glucose 
      concentrations were found between the two conditions at rest and during exercise 
      although a significant increase (p less than 0.01) in glucose level was observed 
      in both conditions after 40 min of exercise. The CHOL as compared to the CHON 
      condition, was associated with significantly (p less than 0.05) lower resting 
      concentrations of insulin, muscle glycogen (8.7 vs 10.6 g . kg-1), and 
      triacylglycerol, and greater concentrations of beta-hydroxybutyrate (0.5 vs 0.2 
      mmol . L-1), and free fatty acids. During exercise, the CHOL condition as 
      compared to the CHON condition, was associated with significantly (p less than 
      0.05) lower insulin and R values, as well as greater free fatty acid (from min 20 
      to 60) and epinephrine (min 60 to 75) concentrations.(ABSTRACT TRUNCATED AT 250 
      WORDS)
FAU - Helie, R
AU  - Helie R
FAU - Lavoie, J M
AU  - Lavoie JM
FAU - Cousineau, D
AU  - Cousineau D
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
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 (Dietary Carbohydrates)
RN  - 0 (Fatty Acids, Nonesterified)
RN  - 0 (Hydroxybutyrates)
RN  - 0 (Insulin)
RN  - 0 (Triglycerides)
RN  - 9007-92-5 (Glucagon)
RN  - IY9XDZ35W2 (Glucose)
RN  - TZP1275679 (3-Hydroxybutyric Acid)
RN  - WI4X0X7BPJ (Hydrocortisone)
RN  - X4W3ENH1CV (Norepinephrine)
RN  - YKH834O4BH (Epinephrine)
SB  - IM
MH  - 3-Hydroxybutyric Acid
MH  - Adult
MH  - Bicycling
MH  - Blood Glucose/*metabolism
MH  - Dietary Carbohydrates/*administration & dosage
MH  - Epinephrine/blood
MH  - Fatty Acids, Nonesterified/blood
MH  - Glucagon/blood
MH  - Glucose
MH  - Humans
MH  - Hydrocortisone/blood
MH  - Hydroxybutyrates/blood
MH  - Insulin/blood
MH  - Kinetics
MH  - Leg
MH  - Male
MH  - Norepinephrine/blood
MH  - *Physical Exertion
MH  - Triglycerides/blood
EDAT- 1985/01/01 00:00
MHDA- 1985/01/01 00:01
CRDT- 1985/01/01 00:00
PHST- 1985/01/01 00:00 [pubmed]
PHST- 1985/01/01 00:01 [medline]
PHST- 1985/01/01 00:00 [entrez]
AID - 10.1007/BF02337188 [doi]
PST - ppublish
SO  - Eur J Appl Physiol Occup Physiol. 1985;54(4):420-6. doi: 10.1007/BF02337188.