Amplitude measures of circadian markers.

Amplitude measures for melatonin (Mel), cortisol (Cort), core body temperature (Temp), alertness (Alert) and performance (Perf) on D2 and the CR separately for the moderate light and bright light treatment group. Melatonin height: pmol/L; Melatonin area under the curve (AUC) nmol/L*min; Melatonin width: h:min. Cortisol measures are in µg/dL, temperature measures in degrees Celsius, Alertness in mm and Performance in number of additions attempted. ##p<0.01 CR vs. D2 per treatment group (see text for overall statistical significance for effect of Day (i.e. CR vs. D2). For core body temperature, alertness and performance data were not available (NA) during D2.