Figure 3From: Effects of tryptophan-rich breakfast and light exposure during the daytime on melatonin secretion at nightMean score (and SDs) for scores of the OSA sleep inventory in the four groups on days 2 (white bars) and 5 (filled bars). (a) Sleepiness, (b) Sleep maintenance, (c) Worries, (d) Integrated sleep felling, and (e) Sleep initiation.Back to article page