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. Author manuscript; available in PMC: 2013 Apr 12.
Published in final edited form as: Somnologie (Berl). 2011 Jun;15(2):111–117. doi: 10.1007/s11818-011-0524-y

Fig. 1.

Fig. 1

Correlation between body weight and food intake during the light–dark cycle. a Across a 24-h period experimental rats consumed approximately 28.13±4.48 g food and increased body weight. b Positive correlation between the average food intake and body weight across a 24-h light–dark cycle. c Body weight and food intake during the light and dark period. During the light (sleep) period rats lost body weight compared to the dark (wake) period. Food intake was significantly higher during the wake period of the rats. d Strong positive correlation between food intake and body weight. Note the stronger (r=0.927) positive correlation during the light (sleep) period when compared to the dark (wake) period (r=0.780)