TABLE 2

Summary of blood-borne metabolites during the 180-min hyperinsulinemic-euglycemic clamp

TreatmentTime (min)
060120180
NE (pg/ml)
 PL202.3 ± 29.1*197.7 ± 21.5*232.7 ± 24.1*218.9 ± 17.7*
 CAFF220.7 ± 30.2*249.3 ± 32.3*257.4 ± 30.6*225.9 ± 28.9*
Lactate (mmol/l)
 PL1.7 ± 0.1*1.7 ± 0.1*1.6 ± 0.1*1.6 ± 0.2*
 CAFF1.5 ± 0.1*1.6 ± 0.1*1.7 ± 0.1*1.5 ± 0.1*
Glycerol (μmol/l)
 PL54.6 ± 14.1*35.9 ± 11.4†37.8 ± 13.2†33.9 ± 12.6†
 CAFF66.5 ± 14.4*39.8 ± 14.0†35.9 ± 10.9†34.9 ± 9.5†
FFA (mmol/l)
 PL0.6 ± 0.1*0.3 ± 0.1†0.2 ± 0.01†0.2 ± 0.02†
 CAFF0.6 ± 0.1*0.3 ± 0.02†0.2 ± 0.02†0.2 ± 0.02†
  • *

    * Data are means ± SE. Treatment is indicated as placebo (PL) or caffeine (CAFF). NE, norepinephrine. Symbols represent significance between time points. Data with the same symbol are not statistically different from one another (P > 0.05).