Effect of exercise on insulin action in human skeletal muscle
Research output: Contribution to journal › Journal article › Research › peer-review
Standard
Effect of exercise on insulin action in human skeletal muscle. / Richter, Erik A.; Mikines, K J; Galbo, Henrik; Kiens, Bente.
In: Journal of Applied Physiology, Vol. 66, No. 2, 1989, p. 876-885.Research output: Contribution to journal › Journal article › Research › peer-review
Harvard
APA
Vancouver
Author
Bibtex
}
RIS
TY - JOUR
T1 - Effect of exercise on insulin action in human skeletal muscle
AU - Richter, Erik A.
AU - Mikines, K J
AU - Galbo, Henrik
AU - Kiens, Bente
PY - 1989
Y1 - 1989
N2 - The effect of 1 h of dynamic one-legged exercise on insulin action in human muscle was studied in 6 healthy young men. Four hours after one-legged knee extensions, a three-step sequential euglycemic hyperinsulinemic clamp combined with arterial and bilateral femoral vein catheterization was performed. Increased insulin action on glucose uptake was found in the exercised compared with the rested thigh at mean plasma insulin concentrations of 23, 40, and 410 microU/ml. Furthermore, prior contractions directed glucose uptake toward glycogen synthesis and increased insulin effects on thigh O2 consumption and at some insulin concentrations on potassium exchange. In contrast, no change in insulin effects on limb exchange of free fatty acids, glycerol, alanine or tyrosine were found after exercise. Glycogen concentration in rested vastus lateralis muscle did not increase measurably during the clamp even though indirect estimates indicated net glycogen synthesis. In contrast, in exercised muscle estimated and biopsy-verified increases in muscle glycogen concentration agreed. Local contraction-induced increases in insulin sensitivity and responsiveness play an important role in postexercise recovery of human skeletal muscle.
AB - The effect of 1 h of dynamic one-legged exercise on insulin action in human muscle was studied in 6 healthy young men. Four hours after one-legged knee extensions, a three-step sequential euglycemic hyperinsulinemic clamp combined with arterial and bilateral femoral vein catheterization was performed. Increased insulin action on glucose uptake was found in the exercised compared with the rested thigh at mean plasma insulin concentrations of 23, 40, and 410 microU/ml. Furthermore, prior contractions directed glucose uptake toward glycogen synthesis and increased insulin effects on thigh O2 consumption and at some insulin concentrations on potassium exchange. In contrast, no change in insulin effects on limb exchange of free fatty acids, glycerol, alanine or tyrosine were found after exercise. Glycogen concentration in rested vastus lateralis muscle did not increase measurably during the clamp even though indirect estimates indicated net glycogen synthesis. In contrast, in exercised muscle estimated and biopsy-verified increases in muscle glycogen concentration agreed. Local contraction-induced increases in insulin sensitivity and responsiveness play an important role in postexercise recovery of human skeletal muscle.
KW - Adult
KW - Alanine
KW - Fatty Acids, Nonesterified
KW - Glucose
KW - Glycogen
KW - Glycogen Synthase
KW - Humans
KW - Insulin
KW - Lactates
KW - Lactic Acid
KW - Male
KW - Muscle Contraction
KW - Muscles
KW - Oxygen Consumption
KW - Physical Exertion
M3 - Journal article
C2 - 2496078
VL - 66
SP - 876
EP - 885
JO - Journal of Applied Physiology
JF - Journal of Applied Physiology
SN - 8750-7587
IS - 2
ER -
ID: 154756916