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. 2014 Nov 17;111(48):17302–17307. doi: 10.1073/pnas.1412021111

Fig. 2.

Fig. 2.

Hourly energy expenditure across the simulated shiftwork protocol (n = 14; P values, planned comparisons for day, two-tailed). The gray line represents day 2 (baseline), the black line is day 3 (nightshift 1), the blue line is day 4 (nightshift 2), and the red line is day 5 (nightshift 3). Black boxes along the x axis indicate scheduled sleep opportunities (day 2 nighttime, day 3 nap, days 4–5 daytime). *Differences between baseline and nightshift 1; #differences between baseline and nightshift 2; ǂdifferences between baseline and nightshift 3; differences between nightshifts 1 and 2; differences between nightshifts 1 and 3; $differences between nightshifts 2 and 3; P < 0.05. Error bars are SEM.