Timing of circadian phase markers.

<p>Timing [h:min (n;SEM)] of Dim Light Melatonin Onset (DLMO), melatonin-upward, melatonin midpoint, and melatonin downward crossing, cortisol minimum, cortisol maximum, core-body temperature minimum, alertness and performance minimum at baseline (D2) and during the Constant Routine (CR) in the Moderate Light and Bright Light condition. Minima for Alertness and Performance are the minima of the circadian component.</p>###<p>p<0.001: D2 vs. CR;</p>§§<p>: p<0.01;</p>§§§<p>:p<0.001 Moderate Light vs. Bright Light during CR.</p><p>P values were derived from two factor Mixed Model ANOVA for those variables for which estimates were available at Baseline and During the CR or Students t-test for those variables for which estimates were available during the CR only.