88590 20210902121701.0 doi 10.3390/ijerph17041264 sideral 117317 ART-2020-117317 eng Pulopulos, Matias M. Universidad de Zaragoza (orcid)0000-0002-7048-3795 Relationship between cortisol changes during the night and subjective and objective sleep quality in healthy older people 2020 Access copy available to the general public Unrestricted The aim of this study was to investigate whether the nighttime cortisol release was associated with subjective and objective sleep quality and the discrepancy between them. Forty-five healthy older adults (age range from 56 to 75 years) collected salivary samples immediately before sleep and immediately after awakening on two consecutive nights. Actigraphy was used to assess objective sleep quality and quantity. A sleep diary was used to assess subjective sleep quality. Linear mixed models were performed using subjective and objective sleep quality data from 76 nights to investigate between-subject associations. We observed that larger changes in cortisol levels between sleep onset and awakening, reflecting a healthier circadian rhythm of the Hypothalamic-Pituitary-Adrenal (HPA) axis, were associated with better subjective sleep quality, but not with objective sleep quality. Moreover, smaller changes in nighttime cortisol were associated with lower subjective sleep quality relative to objective sleep quality. All these results were observed even after controlling for important confounders such as sleep quantity, age, sex, subjective socioeconomic status, stress perception, depression, physical activity, and adherence to the salivary sampling protocol. This study demonstrates that subjective sleep quality in older people may be explained, to some extent, by the activity of the HPA axis. info:eu-repo/grantAgreement/ES/DGA/S31-17D info:eu-repo/grantAgreement/ES/MEC/PSI2016-78763 info:eu-repo/semantics/openAccess by http://creativecommons.org/licenses/by/3.0/es/ 3.39 2020 PUBLIC, ENVIRONMENTAL & OCCUPATIONAL HEALTH 41 / 176 = 0.233 2020 Q1 T1 ENVIRONMENTAL SCIENCES 118 / 273 = 0.432 2020 Q2 T2 PUBLIC, ENVIRONMENTAL & OCCUPATIONAL HEALTH 68 / 203 = 0.335 2020 Q2 T2 0.747 2020 Health, Toxicology and Mutagenesis 2020 Q2 Public Health, Environmental and Occupational Health 2020 Q2 Pollution 2020 Q2 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Hidalgo, Vanesa Universidad de Zaragoza (orcid)0000-0003-3920-1099 Puig-Perez, Sara Montoliu, Teresa Salvador, Alicia 4009 725 Universidad de Zaragoza Dpto. Psicología y Sociología Área Psicobiología 17, 4 (2020), 1264 [11 pp.] Int. j. environ. res. public health International Journal of Environmental Research and Public Health 1661-7827 464952 http://zaguan.unizar.es/record/88590/files/texto_completo.pdf Versión publicada 485677 http://zaguan.unizar.es/record/88590/files/texto_completo.jpg?subformat=icon icon Versión publicada oai:zaguan.unizar.es:88590 articulos driver 2021-09-02-09:14:32 ARTICLE