000156669 001__ 156669
000156669 005__ 20251017144609.0
000156669 0247_ $$2doi$$a10.3390/life15050715
000156669 0248_ $$2sideral$$a143937
000156669 037__ $$aART-2025-143937
000156669 041__ $$aeng
000156669 100__ $$0(orcid)0000-0002-5621-1937$$aSanchez-Cano, Ana$$uUniversidad de Zaragoza
000156669 245__ $$aComparative Effects of Red and Blue LED Light on Melatonin Levels During Three-Hour Exposure in Healthy Adults
000156669 260__ $$c2025
000156669 5060_ $$aAccess copy available to the general public$$fUnrestricted
000156669 5203_ $$aCircadian rhythms, essential for regulating human physiology and behavior, are influenced by light exposure, particularly at night. This study examined the impact of red (631 nm) and blue (464 nm) LED light on melatonin secretion, a key circadian marker. Twelve participants aged 19–55 years were exposed to red and blue light for three hours (9:00 p.m.–midnight), with hourly saliva samples analyzed via ELISA to track melatonin levels. Initially, melatonin levels were comparable under both light conditions. After one hour, both lights suppressed melatonin, but differences emerged after two hours: blue light-maintained suppression, with levels at 7.5 pg/mL, while red light allowed recovery to 26.0 pg/mL (p = 0.019). This pattern persisted at the third hour. Blue light had stronger suppression effects, particularly in younger participants and men. These results underscore blue light’s disruptive effects on circadian health and highlight red light as a less disruptive alternative for nighttime environments.
000156669 536__ $$9info:eu-repo/grantAgreement/ES/DGA/LMP39_21$$9info:eu-repo/grantAgreement/ES/UZ/JIUZ-2021-CIE-03
000156669 540__ $$9info:eu-repo/semantics/openAccess$$aby$$uhttps://creativecommons.org/licenses/by/4.0/deed.es
000156669 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion
000156669 700__ $$0(orcid)0000-0003-4071-1467$$aLuesma-Bartolomé, María José$$uUniversidad de Zaragoza
000156669 700__ $$0(orcid)0000-0001-8056-5236$$aSolanas, Estela$$uUniversidad de Zaragoza
000156669 700__ $$0(orcid)0000-0003-2710-1875$$aOrduna-Hospital, Elvira$$uUniversidad de Zaragoza
000156669 7102_ $$11003$$2027$$aUniversidad de Zaragoza$$bDpto. Anatom.Histolog.Humanas$$cArea Anatom.Embriol.Humana
000156669 7102_ $$12002$$2647$$aUniversidad de Zaragoza$$bDpto. Física Aplicada$$cÁrea Óptica
000156669 773__ $$g15, 5 (2025), 715 [15 pp.]$$pLife (Basel)$$tLife$$x2075-1729
000156669 8564_ $$s1782239$$uhttps://zaguan.unizar.es/record/156669/files/texto_completo.pdf$$yVersión publicada
000156669 8564_ $$s2584406$$uhttps://zaguan.unizar.es/record/156669/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada
000156669 909CO $$ooai:zaguan.unizar.es:156669$$particulos$$pdriver
000156669 951__ $$a2025-10-17-14:16:22
000156669 980__ $$aARTICLE