PURPOSE: Chronotype and obstructive sleep apnea (OSA) appear to have a similar lifelong evolution, which could indicate a possible effect of morningness or eveningness in the apnea-hypopnea index (AHI). The present study aimed to examine the prevalence of chronotypes in a representative sample of São Paulo city residents and to investigate the effect of chronotypes on the severity of OSA. METHODS: We performed a cross-sectional analysis using the São Paulo Epidemiologic Sleep Study (EPISONO). All participants underwent a full-night polysomnography and completed the Morningness-eveningness, Epworth Sleepiness Scale, and UNIFESP Sleep questionnaires. Chronotypes were classified as morning-type, evening-type, and intermediate. RESULTS: Morning-type individuals represented 52.1% of the sample, followed by intermediate (39.5%), and evening-type (8.4%) individuals. After stratifying the sample by body mass index (BMI) (>26.8 kg/m(2)) and age (>42 years), we observed increased AHI values in morning- and evening-type individuals. CONCLUSION: We demonstrated, for the first time, an age- and BMI-related effect of morning- and evening-types in OSA severity, suggesting that the intermediate chronotype might play a role as a protective factor in older and overweight patients.
PURPOSE: Chronotype and obstructive sleep apnea (OSA) appear to have a similar lifelong evolution, which could indicate a possible effect of morningness or eveningness in the apnea-hypopnea index (AHI). The present study aimed to examine the prevalence of chronotypes in a representative sample of São Paulo city residents and to investigate the effect of chronotypes on the severity of OSA. METHODS: We performed a cross-sectional analysis using the São Paulo Epidemiologic Sleep Study (EPISONO). All participants underwent a full-night polysomnography and completed the Morningness-eveningness, Epworth Sleepiness Scale, and UNIFESP Sleep questionnaires. Chronotypes were classified as morning-type, evening-type, and intermediate. RESULTS: Morning-type individuals represented 52.1% of the sample, followed by intermediate (39.5%), and evening-type (8.4%) individuals. After stratifying the sample by body mass index (BMI) (>26.8 kg/m(2)) and age (>42 years), we observed increased AHI values in morning- and evening-type individuals. CONCLUSION: We demonstrated, for the first time, an age- and BMI-related effect of morning- and evening-types in OSA severity, suggesting that the intermediate chronotype might play a role as a protective factor in older and overweight patients.
Authors: T Hori; Y Sugita; E Koga; S Shirakawa; K Inoue; S Uchida; H Kuwahara; M Kousaka; T Kobayashi; Y Tsuji; M Terashima; K Fukuda; N Fukuda Journal: Psychiatry Clin Neurosci Date: 2001-06 Impact factor: 5.188
Authors: Bharati Prasad; Alana D Steffen; Hans P A Van Dongen; Francis M Pack; Inna Strakovsky; Bethany Staley; David F Dinges; Greg Maislin; Allan I Pack; Terri E Weaver Journal: Sleep Date: 2018-02-01 Impact factor: 5.849