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Fig. 3 | Journal of Physiological Anthropology

Fig. 3

From: Circadian phase advances in children during camping life according to the natural light-dark cycle

Fig. 3

Change in mean salivary melatonin onset and mean sleep-wake timing. Mean dim light melatonin onset (DLMO) and sleep-wake timing were compared during daily life (PreCamp) and during the camping program (Camp) in the earlier wake time (EW) condition (A) and in the synchronized wake time (SW) condition (B). Salivary melatonin onset is shown as colored triangles. Blue triangles indicate PreCamp-DLMO and red triangles indicate Camp-DLMO. Bedtimes and wake times were set for 19:30 and 4:00, respectively, in the EW condition and for 20:00 and 5:00, respectively, in the SW condition

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