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. 2018 Mar 15;15(3):524. doi: 10.3390/ijerph15030524

Figure 2.

Figure 2

Study protocol. The timing of assessments in each laboratory session are shown in the figure. In the intermittent light condition, Session 1, Session 3, and Session 5 were bright light (1000 lux) exposure sessions, and Session 2, Session 4, and Session 6 were dim light (<5 lux) exposure sessions. In the continuous light condition, all of the six sessions were bright light (1000 lux) exposure sessions. In the dim light condition, all of the six light exposure sessions were dim light (<5 lux) exposure sessions.BS: baseline; A: assessment (PVT + KSS); A1~A12: assessment 1~assessment 12 (PVT + KSS).