Light Modulates Leptin and Ghrelin in Sleep-Restricted Adults

Table 1

Mean ± SEM and median concentrations of leptin and ghrelin. Exposure to red light significantly (𝑃<0.05) increased leptin concentrations compared to the remaining in dim-light condition after both 8-hour sleep and 5-hour sleep schedules.

	Leptin		Ghrelin
	Mean ± SEM (ng/mL)	Median (ng/mL)	Mean ± SEM (pg/mL)	Median (ng/mL)
8-hour sleep/dim	9.7 ± 2.3	7.9	979 ± 87	945
5-hour sleep/dim	9.5 ± 2.6	6.2	983 ± 70	957
5-hour sleep/green	11.6 ± 2.7	8.4	894 ± 43	847
5-hour sleep/blue	11.5 ± 2.6	9.1	962 ± 88	884
5-hour sleep/red	12.0 ± 2.7*	9.8	906 ± 90	768

* 𝑃=0.05.