Arterial blood glucose (A), hepatic glucose load (HGL; B), unidirectional hepatic glucose uptake (HGU; C and D), and net hepatic glucose balance (NHGB; E and F) in CTR (◻), HFA (▲), and HFR (○) during the basal (−20 to 0 min) and experimental periods (0–180 min) of HIHG clamps. Data are means ± SE; n = 5/group. *P < 0.05 vs. CTR.