Table 2.

Baseline sleep: endocrine effects on sleep and wake bout lengths

Con ADX ADX + 1 × BADX + 2 × B RMANOVA
Mean SBL
Lights on
 1 × B group 4.6 ± 0.4 4.0 ± 0.34.3 ± 0.4 NS
 2 × B group4.7 ± 0.4 4.0 ± 0.3 3.8 ± 0.4 F(2,29) = 4.0, P = 0.038
Con > ADX, ADX + 2 × B*
Lights off
 1 × B group 2.5 ± 0.13.6 ± 0.3 2.8 ± 0.2 F(2,32) = 13.8, P = 0.001
ADX > Con, ADX + 1 × B*
 2 × B group 2.5 ± 0.1 3.2 ± 0.12.4 ± 0.3 F(2,29) = 4.64,P = 0.025
ADX > Con, ADX + 2 × B*
Max SBL
Lights on
 1 × B group11.4 ± 0.7 10.1 ± 0.6 10.6 ± 0.7NS
 2 × B group 11.3 ± 0.89.3 ± 0.4 9.2 ± 0.7 F(2,29) = 5.7, P = 0.010
Con > ADX, ADX + 2 × B*
Lights off
 1 × B group 6.4 ± 0.48.6 ± 0.6 7.3 ± 0.5 F(2,31) = 5.6, P = 0.016
ADX > Con*
 2 × B group6.2 ± 0.4 7.5 ± 0.2 5.7 ± 0.6 F(2,29) = 3.8, P = 0.043
ADX > ADX + 2 × B*
Mean WBL
Lights on
 1 × B group 2.3 ± 0.1 3.2 ± 0.23.2 ± 0.5 F(2,32) = 9.2,P = 0.002
ADX, ADX + 1 × B > Con*
 2 × B group2.6 ± 0.1 3.6 ± 0.3 3.4 ± 0.2 F(2,29) = 5.7, P = 0.013
ADX, ADX + 2 × B > Con*
Lights off
 1 × B group 5.3 ± 0.55.8 ± 0.6 4.3 ± 0.4 NS
 2 × B group 5.1 ± 0.35.6 ± 0.5 6.1 ± 0.6 NS
Max WBL
Lights on
 1 × B group 9.1 ± 0.8 12.2 ± 1.010.3 ± 1.2 F(2,32) = 5.9,P = 0.013
ADX > Con*
 2 × B group 9.4 ± 0.5 13.4 ± 0.812.9 ± 0.7 F(2,29) = 10.3,P = 0.001
ADX, ADX + 2 × B > Con*
Lights off
 1 × B group 18.9 ± 1.0 19.1 ± 1.116.6 ± 1.7 NS
 2 × B group19.0 ± 1.6 19.6 ± 1.320.8 ± 1.5 NS
  • Values are means ± SE and are 12-h averages. SBL, sleep bout lengths (in min); WBL, wake bout lengths (in min). For statistical method, see Table 1.

  • * Results of post hoc contrasts (Newman-Keuls).