TY - JOUR
T1 - Exercise training favors increased insulin-stimulated glucose uptake in skeletal muscle in contrast to adipose tissue
T2 - A randomized study using FDG PET imaging
AU - Reichkendler, Michala Holm
AU - Auerbach, Pernille Landrock
AU - Larsen, Mads Rosenkilde
AU - Christensen, Anders N.
AU - Holm, Søren
AU - Petersen, Martin Bæk
AU - Lagerberg, Anders
AU - Larsson, Henrik B W
AU - Rostrup, Egill
AU - Mosbech, Thomas Hammershaimb
AU - Sjödin, Anders Mikael
AU - Kjaer, Andreas
AU - Ploug, Thorkil
AU - Hoejgaard, Liselotte
AU - Stallknecht, Bente Merete
N1 - CURIS 2013 NEXS 172
PY - 2013/5/8
Y1 - 2013/5/8
N2 - Physical exercise increases peripheral insulin sensitivity, but regional differences are poorly elucidated in humans. We investigated the effect of aerobic exercise training on insulin-stimulated glucose uptake in five individual femoral muscle groups and four different adipose tissue regions, using dynamic (femoral region) and static (abdominal region) 2-deoxy-2-[18F]fluoro-D-glucose (FDG) PET/CT methodology during steady-state insulin infusion (40 mU·m-2·min-1). Body composition was measured by dual X-ray absorptiometry and MRI. Sixty-one healthy, sedentary [VO2max 36(5) ml·kg-1·min-1; mean(SD)], moderately overweight [BMI 28.1(1.8) kg/m2], young [age: 30(6) yr] men were randomized to sedentary living (CON; n = 17 completers) or moderate (MOD; 300 kcal/day, n = 18) or high (HIGH; 600 kcal/day, n = 18) dose physical exercise for 11 wk. At baseline, insulin-stimulated glucose uptake was highest in femoral skeletal muscle followed by intraperitoneal visceral adipose tissue (VAT), retroperitoneal VAT, abdominal (anterior + posterior) subcutaneous adipose tissue (SAT), and femoral SAT (P < 0.0001 between tissues). Metabolic rate of glucose increased similarly (~30%) in the two exercise groups in femoral skeletal muscle (MOD 24[9, 39] μmol·kg-1·min-1, P = 0.004; HIGH 22[9, 35] μmol·kg-1·min-1, P = 0.003) (mean[95% CI]) and in five individual femoral muscle groups but not in femoral SAT. Standardized uptake value of FDG decreased ~24% in anterior abdominal SAT and ~20% in posterior abdominal SAT compared with CON but not in either intra- or retroperitoneal VAT. Total adipose tissue mass decreased in both exercise groups, and the decrease was distributed equally among subcutaneous and intra-abdominal depots. In conclusion, aerobic exercise training increases insulin-stimulated glucose uptake in skeletal muscle but not in adipose tissue, which demonstrates some interregional differences.
AB - Physical exercise increases peripheral insulin sensitivity, but regional differences are poorly elucidated in humans. We investigated the effect of aerobic exercise training on insulin-stimulated glucose uptake in five individual femoral muscle groups and four different adipose tissue regions, using dynamic (femoral region) and static (abdominal region) 2-deoxy-2-[18F]fluoro-D-glucose (FDG) PET/CT methodology during steady-state insulin infusion (40 mU·m-2·min-1). Body composition was measured by dual X-ray absorptiometry and MRI. Sixty-one healthy, sedentary [VO2max 36(5) ml·kg-1·min-1; mean(SD)], moderately overweight [BMI 28.1(1.8) kg/m2], young [age: 30(6) yr] men were randomized to sedentary living (CON; n = 17 completers) or moderate (MOD; 300 kcal/day, n = 18) or high (HIGH; 600 kcal/day, n = 18) dose physical exercise for 11 wk. At baseline, insulin-stimulated glucose uptake was highest in femoral skeletal muscle followed by intraperitoneal visceral adipose tissue (VAT), retroperitoneal VAT, abdominal (anterior + posterior) subcutaneous adipose tissue (SAT), and femoral SAT (P < 0.0001 between tissues). Metabolic rate of glucose increased similarly (~30%) in the two exercise groups in femoral skeletal muscle (MOD 24[9, 39] μmol·kg-1·min-1, P = 0.004; HIGH 22[9, 35] μmol·kg-1·min-1, P = 0.003) (mean[95% CI]) and in five individual femoral muscle groups but not in femoral SAT. Standardized uptake value of FDG decreased ~24% in anterior abdominal SAT and ~20% in posterior abdominal SAT compared with CON but not in either intra- or retroperitoneal VAT. Total adipose tissue mass decreased in both exercise groups, and the decrease was distributed equally among subcutaneous and intra-abdominal depots. In conclusion, aerobic exercise training increases insulin-stimulated glucose uptake in skeletal muscle but not in adipose tissue, which demonstrates some interregional differences.
U2 - 10.1152/ajpendo.00128.2013
DO - 10.1152/ajpendo.00128.2013
M3 - Journal article
C2 - 23800880
SN - 0193-1849
VL - 305
SP - E496-506
JO - American Journal of Physiology: Endocrinology and Metabolism
JF - American Journal of Physiology: Endocrinology and Metabolism
IS - 4
ER -