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. 2014 Jun 25;100(2):559–566. doi: 10.3945/ajcn.114.086579

FIGURE 1.

FIGURE 1.

Mean (±SEM) daily caloric intake during baseline and sleep restriction. Subjects consumed more calories during sleep restriction than baseline (P < 0.001; repeated-measures ANOVA). A: Daily caloric intake showed a significant sex × sleep condition interaction (P = 0.012) and a significant main effect of sex (P = 0.004). Men (n = 23) consumed more calories during baseline (P = 0.038) and sleep restriction (P = 0.003) and exhibited a greater increase in caloric intake during sleep loss (sleep restriction − baseline; P = 0.012, d = 0.92) than did women (n = 21). When differences in baseline caloric intake were controlled for, men also exhibited a greater percentage increase in caloric intake than did women (sleep restriction÷baseline; 28.5% compared with 16.9%; P = 0.045, d = 0.62). B: The race × sleep condition interaction for daily caloric intake was not significant (P = 0.83), and there was no main effect of race (P = 0.53).