biostudies-literatureMatuzaki LFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Associaçao Fundo de Incentivo a Pesquisa (AFIP)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)152-7https://www.ebi.ac.uk/biostudies/studies/S-EPMC4559592biostudies-literatureUnknown7(3)The aim of the present study was to characterize the temporal patterns of sleep and wakefulness in a sample of the adult subjects from São Paulo city. All subjects filled the Morningness/Eveningness Questionnaire (MEQ) and wore an actigraph for at least three consecutive days. A total of 359 subjects were considered for the analyses. The mean age was 43±14 years, the mean body mass index was 26.7±5.7 kg/m(2), and 60% were female. The mean MEQ score was 58.0±10.7. The sleep pattern evaluated by the actigraphic analyses showed that 92% had a monophasic sleep pattern, 7% biphasic, and 1% polyphasic sleep pattern. Cluster analysis, based on time to sleep onset, sleep efficiency, sleep latency, and total sleep time, was able to identify three different groups denominated: morning type, evening Sleep science (Sao Paulo, Brazil)Temporal sleep patterns in adults using actigraph.PMC4559592#07/50525-1#98/14303-3de Castro Moreno CRBittencourt LMarqueze ECSantos-Silva RMatuzaki LTufik SfalseTemporal sleep patterns in adults using actigraph.The aim of the present study was to characterize the temporal patterns of sleep and wakefulness in a sample of the adult subjects from São Paulo city. All subjects filled the Morningness/Eveningness Questionnaire (MEQ) and wore an actigraph for at least three consecutive days. A total of 359 subjects were considered for the analyses. The mean age was 43±14 years, the mean body mass index was 26.7±5.7 kg/m(2), and 60% were female. The mean MEQ score was 58.0±10.7. The sleep pattern evaluated by the actigraphic analyses showed that 92% had a monophasic sleep pattern, 7% biphasic, and 1% polyphasic sleep pattern. Cluster analysis, based on time to sleep onset, sleep efficiency, sleep latency, and total sleep time, was able to identify three different groups denominated: morning type, evening 2014-01-01T00:00:00Z2014 Sep2025-05-29T21:05:45.808Z2019-03-27T01:57:49ZS-EPMC45595922648392010.1016/j.slsci.2014.09.012