Fig. 1.

Baseline blood glucose levels measured by telemetry in young adult (12–14 wk old), male lean Zucker rats (LZR, n = 11) and obese Zucker rats (LZR and OZR, n = 12). A: morning blood glucose levels in fasted and fed states; *P < 0.05 vs. fasted OZR and †P < 0.05 vs. fed LZR. B: hourly averages over a 24-h period in these OZR and LZR with access to food; P < 0.05, OZR vs. LZR for all hours. C: standard deviation of glucose in these LZR and OZR during peak hours of the night (9:30 PM–11:30 PM) and lowest hours of the morning (5:30 AM–7:30 AM); *P < 0.05 vs. LZR during the same time period and †P < 0.05 vs. OZR during the morning. Data were analyzed by ANOVA with repeated measures followed by Tukey’s honestly significant difference tests.