PMID- 6378810
OWN - NLM
STAT- MEDLINE
DCOM- 19840920
LR  - 20131121
IS  - 0172-4622 (Print)
IS  - 0172-4622 (Linking)
VI  - 5
IP  - 3
DP  - 1984 Jun
TI  - Effects of a 24-h CHO-poor diet on metabolic and hormonal responses during 
      prolonged CHO-loaded leg exercise.
PG  - 146-51
AB  - This study examined the effects of a pre-experimental period of arm exercise 
      followed by a 24-h carbohydrate (CHO)-poor intake, intended to reduce initial 
      hepatic glycogen levels, on substrate and endocrine responses during prolonged 
      CHO-loaded leg exercise. Seven subjects pedaled a cycle ergometer for 60 min at 
      62% VO2 max in the two following conditions: 1) after leg CHO loading followed by 
      a 60-min arm exercise and a 24-h CHO-poor diet (CHOL + P), and 2) after leg CHO 
      loading only (CHOL). Greater blood concentrations of fatty acids (1.2 vs 0.9 mEq 
      X L-1), glycerol (0.41 vs 0.20 mmol X L-1), norepinephrine (2.09 vs 1.14 ng X 
      ml-1), and epinephrine (0.38 vs 0.19 ng X ml-1) were observed in the CHOL + P as 
      compared to the CHOL condition at min 60 of exercise. Insulin concentration was 
      significantly (P less than 0.05) lower in the CHOL + P condition at rest and 
      during exercise. There were no significant differences during exercise between 
      the two conditions in blood glucose, lactate, glucagon, and cortisol 
      concentrations. It is concluded that changes in blood glucose concentration do 
      not solely account for metabolic and hormonal adaptations during prolonged leg 
      exercise and that a pre-experimental period of arm exercise and CHO-poor diet, in 
      spite of an increase in leg muscle glycogen, may provide a stimulus for such 
      adaptations. It is suggested that the liver glycogen content may be involved in 
      the regulatory mechanism.
FAU - Lavoie, J M
AU  - Lavoie JM
FAU - Peronnet, F
AU  - Peronnet F
FAU - Cousineau, D
AU  - Cousineau D
FAU - Provencher, P J
AU  - Provencher PJ
LA  - eng
PT  - Clinical Trial
PT  - Comparative Study
PT  - Journal Article
PT  - Randomized Controlled Trial
PT  - Research Support, Non-U.S. Gov't
PL  - Germany
TA  - Int J Sports Med
JT  - International journal of sports medicine
JID - 8008349
RN  - 0 (Blood Glucose)
RN  - 0 (Dietary Carbohydrates)
RN  - 0 (Fatty Acids, Nonesterified)
RN  - 0 (Insulin)
RN  - 0 (Lactates)
RN  - 9007-92-5 (Glucagon)
RN  - PDC6A3C0OX (Glycerol)
RN  - WI4X0X7BPJ (Hydrocortisone)
RN  - X4W3ENH1CV (Norepinephrine)
RN  - YKH834O4BH (Epinephrine)
SB  - IM
MH  - Blood Glucose/analysis
MH  - Dietary Carbohydrates/*administration & dosage
MH  - *Energy Metabolism
MH  - Epinephrine/blood
MH  - *Exercise Test
MH  - Fatty Acids, Nonesterified/blood
MH  - Glucagon/blood
MH  - Glycerol/blood
MH  - Humans
MH  - Hydrocortisone/blood
MH  - Insulin/blood
MH  - Lactates/blood
MH  - Male
MH  - Norepinephrine/blood
EDAT- 1984/06/01 00:00
MHDA- 1984/06/01 00:01
CRDT- 1984/06/01 00:00
PHST- 1984/06/01 00:00 [pubmed]
PHST- 1984/06/01 00:01 [medline]
PHST- 1984/06/01 00:00 [entrez]
AID - 10.1055/s-2008-1025897 [doi]
PST - ppublish
SO  - Int J Sports Med. 1984 Jun;5(3):146-51. doi: 10.1055/s-2008-1025897.