Low‑Level LED Light Therapy for Sleep and HRV in Shift‑Work Nurses: Randomized Trial
Summary
Examined low‑energy light therapy effects on sleep quality, psychological symptoms, and heart‑rate variability among shift‑working nurses.
Why It Matters For Night Shift Workers and Night Owls
This RCT how timing and spectrum of light on shift versus before daytime sleep showed sleep & alertness for night‑shift workers and night owls. Together with other trials, it frames light as a measurable lever for on‑shift alertness and next‑day sleep, not just ambience. For people who work nights, that frames an everyday choice (when you eat, how you light the end of a shift, how rest is split) as part of the mechanism, not just routine.
Notes
Trial in active hospital staff.