Figure 3.

Phase delay (mean ± SD) for each band during sleep and wake periods. Negative phase delay indicates that changes in glucose occurred prior to (led) changes in activity, while positive phase delay indicates that changes in activity led changes in glucose. In Band 3, the mean phase delay was significantly negative during sleep with respect to during wake (p = .007). *p < .05, indicating that the mean phase delay was significantly different from zero; #p < .05, indicating that the mean phase delay was significantly different between sleep and wake.