. Author manuscript; available in PMC: 2009 Sep 15.

Published in final edited form as: Physiol Behav. 2007 Jun 20;92(5):800–806. doi: 10.1016/j.physbeh.2007.06.009

Table 2.

Experiment 3: Mean ± SEM CORT and ACTH

	Pre-shift	Post-shift

Duration of peak phase	8.00 ± 0.53 hours	5.70 ± 1.29 hours	^†
Duration of nadir phase	7.83 ± 0.49 hours	5.67 ± 0.98 hours
Mean of peak phase (above daily mean)	23.97 ± 1.37 μg/dl	30.40 ± 4.54 μg/dl	^†
Mean of nadir phase (below daily mean)	4.85 ± 0.90 μg/dl	6.21 ± 0.73 μg/dl
Mean from 2100-0300h (pre-shift peak)	25.46 ± 1.25 μg/dl	34.46 ± 6.19 μg/dl
Mean from 1030-1800h (pre-shift nadir)	4.24 ± 0.75 μg/dl	10.52 ± 2.01 μg/dl	^*
Time of peak onset	2135h ± 13min	0204h ± 173min	^*
Time of nadir offset	1808h ± 13min	1350h ± 92min	^*

denotes significantly different from pre-shift values, p < 0.05.

^†

denotes a trend towards change from pre-shift values, 0.10> p > 0.05. Time of peak onset and Time of nadir offset are in clock time (pre-shift lights-off occurred at 2400h).