TABLE 2

Myocardial Glycogen Measurements

Intervention	Glycogen (μmol/g)	U-¹³C-Glycogen enrichment (%)	¹³C-Glycogen (nmol/g)	¹³C-Glycogen/ glucose utilization (%)
Fast (n = 3)	52.3 ± 9.6	0.080 ± 0.038	42.6 ± 25.8	1.053 ± 0.779
Clamp/IL (n = 3)	50.5 ± 2.2	0.220 ± 0.113	110.3 ± 53.5	0.368 ± 0.087
Clamp/LA (n = 3)	64.2 ± 1.9	0.206 ± 0.087	133.3 ± 56.4^*	0.364 ± 0.124
Clamp (n = 3)	54.6 ± 3.1	0.117 ± 0.006	64.0 ± 0.5	0.092 ± 0.032
Clamp/PH (n = 5)	47.5 ± 13.2	0.046 ± 0.037^†	18.7 ± 7.7^†	0.014 ± 0.009^*

↵* P < 0.05 vs. Fast.
↵† P < 0.05 vs. Clamp/IL and Clamp/LA.
Clamp = hyperinsulinemic–euglycemic clamp; IL = Intralipid; LA = lactate; PH = phenylephrine. Values represent mean ± SD. Enrichment measurements could not be obtained in 4 different animals (1 from each group except Clamp/PH group).