Figure 1.
Intravenous glucose tolerance tests (IVGTTs) in rats after sleep deprivation. Relative changes in plasma glucose concentration (A, D), plasma insulin concentration (B, E), and plasma corticosterone concentration (C, F) after a glucose bolus (500 mg kg−1 intravenous) during IVGTTs starting at circadian time (CT) 4 and CT8. Black circles: control animals; gray squares: sleep‐deprived animals. CTR = control, SD = sleep deprived. All groups n = 6. Data are presented as mean ± SEM. *P < 0.05, **P < 0.005, ***P < 0.001.