Quasi-Experimental study of effects of lighting on rest, activity and melatonin in postpartum women

• Autor(a) principal: Volcov, Cristina Furtado
• Data de Publicação: 2021
• Outros Autores: Pinheiro, Eliana Moreira, Tsunemi, Miriam Harumi [UNESP], Amaral, Fernanda Gaspar do, Avelar, Ariane Ferreira Machado, Hocking, Jennifer, Coca, Kelly Pereira
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Repositório Institucional da UNESP
• Texto Completo: http://dx.doi.org/10.1590/0034-7167-2020-1064; http://hdl.handle.net/11449/233525

OBJECTIVES: to compare the parameters of the activity/rest cycle of early postpartum breastfeeding women under a controlled and uncontrolled long wavelength ray light regimen. METHODS: quasi-experimental study with breastfeeding women and their babies during postnatal rooming-in, São Paulo, Brazil. Participants were allocated to either an experimental (intervention) or a comparison group. The intervention involved exposure of the woman in a controlled room with artificial long wavelength ray light at night. Each woman's level of 6-sulfatoxymelatonin at 24 hours and activity/rest times was analyzed. RESULTS: the mean activity/rest times of women in the experimental and comparison groups were similar. The mean percentages of total load of 6-sulfatoxymelatonin during the day and night were similar (p=0.09). At 24 hours, the experimental group presented a significantly lower mean percentage of total load compared to the comparison group (p=0.04). CONCLUSIONS: women who stayed in the room with long-wavelength artificial light showed no difference in activity/rest and 6-sulfatoxymelatonin levels in the early postpartum period.