PMID- 1798313
OWN - NLM
STAT- MEDLINE
DCOM- 19920416
LR  - 20170126
IS  - 0022-4707 (Print)
IS  - 0022-4707 (Linking)
VI  - 31
IP  - 3
DP  - 1991 Sep
TI  - Comparison of sympatho-adrenal activity during endurance exercise performed under 
      high- and low-carbohydrate diet conditions.
PG  - 407-12
AB  - Effects of varied carbohydrate (CHO) content in the diet on sympatho-adrenal 
      activity to endurance exercise during which blood sugar was kept over a 
      preexercise level were studied in five male physical education students. The CHO 
      loading was used and consisted of a 7-day low CHO diet (30% CHO, 50% fat, 20% 
      protein) followed by a 7-day high CHO diet (70% CHO, 20% fat, 10% protein). The 
      results obtained from the present study were as follows: (1) plasma epinephrine 
      (E) was almost the same between the low and the high CHO diets before and at 30 
      min of the exercise, while plasma norepinephrine (NE) level at 30 min of the 
      exercise was significantly higher in the low (959 +/- 98 pg/ml) than in the high 
      CHO diet (679 +/- 64 pg/ml) (p less than 0.05); (2) serum free fatty acid (FFA) 
      level was significantly higher in the low than in the high CHO diet before (p 
      less than 0.05) and at 30 min of the exercise (p less than 0.01); (3) a negative 
      correlation was found between muscle glycogen and plasma NE (p less than 0.05). 
      In all the subjects, increase in serum FFA accompanied by increase in plasma NE 
      was detected in the low CHO diet. In conclusion, sympathetic activity to 
      endurance exercise during which blood sugar was kept over a preexercise level was 
      elevated more in the low than in the high CHO diet. It was suggested that the 
      more elevated sympathetic nervous activity would have resulted from glycogen 
      depletion in the working muscle due to the low CHO diet and would have increased 
      FFA mobilization from the adipose tissue.
FAU - Sasaki, H
AU  - Sasaki H
AD  - Human Performance Laboratory, Hokuriku Institute of Wellness and Sports Sciences, 
      Japan.
FAU - Hotta, N
AU  - Hotta N
FAU - Ishiko, T
AU  - Ishiko T
LA  - eng
PT  - Comparative Study
PT  - Journal Article
PL  - Italy
TA  - J Sports Med Phys Fitness
JT  - The Journal of sports medicine and physical fitness
JID - 0376337
RN  - 0 (Blood Glucose)
RN  - 0 (Dietary Carbohydrates)
RN  - 0 (Fatty Acids, Nonesterified)
RN  - 9005-79-2 (Glycogen)
RN  - X4W3ENH1CV (Norepinephrine)
SB  - IM
MH  - Adrenal Glands/*physiology
MH  - Adult
MH  - Blood Glucose/analysis
MH  - Dietary Carbohydrates/*administration & dosage
MH  - Exercise Test
MH  - Fatty Acids, Nonesterified/blood
MH  - Glycogen/analysis
MH  - Humans
MH  - Male
MH  - Norepinephrine/analysis/metabolism
MH  - *Physical Endurance
MH  - Sympathetic Nervous System/*physiology
EDAT- 1991/09/01 00:00
MHDA- 1991/09/01 00:01
CRDT- 1991/09/01 00:00
PHST- 1991/09/01 00:00 [pubmed]
PHST- 1991/09/01 00:01 [medline]
PHST- 1991/09/01 00:00 [entrez]
PST - ppublish
SO  - J Sports Med Phys Fitness. 1991 Sep;31(3):407-12.