During the hypoglycemic clamp , glucagon responses were markedly diminished ( @ @ vs. @ @ ng/L , P < @ ) , but other hormonal responses and the decrement in the required exogenous glucose infusion rate ( GIR ) from the euglycemic clamp were normal ( -@ @ vs. -@ @ mol kg ( -@ ) min ( -@ ) in control subjects ) ; however , endogenous glucose production ( EGP ) did not increase ( -@ @ vs. @ @ mol kg ( -@ ) min ( -@ ) in control subjects , P < @ ) , whereas systemic glucose disposal decreased normally .