Clinical Study
Effects of Bright Light with Reduced Blue Light on Sleepiness on Rising: A Small Exploratory Study
Table 1
Effects of the interventions on the Stanford Sleepiness Scale score. Data are presented as mean ± S.D.
| Intervention | Day | Stanford Sleepiness Scale (n=6) | Mean Stanford Sleepiness Scale | P vs No light |
| No light | 1 | 3.0 ± 1.0 | 3.9 ± 1.4 | − | 2 | 3.7 ± 1.4 | 3 | 4.5 ± 1.4 | 4 | 4.3 ± 1.5 |
| 50%-cut | 5 | 3.2 ± 1.0 | 3.3 ± 1.5 | 0.148 | 6 | 3.3 ± 2.0 | 7 | 3.2 ± 1.6 | 8 | 2.5 ± 0.8 |
| 30%-cut | 9 | 2.2 ± 0.8 | 2.6 ± 1.1 | 0.002 | 10 | 2.8 ± 1.5 | 11 | 2.5 ± 0.8 | 12 | 2.8 ± 1.2 |
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