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Silva-Caballero A, Ball HL, Kramer KL, Bentley GR. Sleep tight! Adolescent sleep quality across three distinct sleep ecologies. Evol Med Public Health 2023; 11:448-460. [PMID: 38044930 PMCID: PMC10693291 DOI: 10.1093/emph/eoad040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Revised: 10/05/2023] [Indexed: 12/05/2023] Open
Abstract
Background and objectives Good sleep quality, associated with few arousals, no daytime sleepiness and self-satisfaction with one's sleep, is pivotal for adolescent growth, maturation, cognition and overall health. This article aims to identify what ecological factors impact adolescent sleep quality across three distinct sleep ecologies representing a gradient of dense urbanity to small, rural environments with scarce artificial lighting and no Internet. Methodology We analyze variation of sleep efficiency, a quantitative measure of sleep quality-defined as the ratio of total time spent asleep to total time dedicated to sleep-in two agricultural indigenous populations and one post-industrial group in Mexico (Campeche = 44, Puebla = 51, Mexico City = 50, respectively). Data collection included actigraphy, sleep diaries, questionnaires, interviews and ethnographic observations. We fit linear models to examine sleep efficiency variation within and between groups. Results We found that sleep efficiency varied significantly across sites, being highest in Mexico City (88%) and lowest in Campeche (75%). We found that variation in sleep efficiency was significantly associated with nightly exposure to light and social sleep practices. Conclusions and implications Our findings point toward contextual cost-benefits of sleep disruption in adolescence. We highlight the need to prioritize research on adolescent sleep quality across distinct developmental ecologies and its impact on health to improve adolescent wellbeing through evidence-based health practices.
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Affiliation(s)
- Andrea Silva-Caballero
- Institute of Anthropological Research, National Autonomous University of Mexico, Mexico City, 04510, Mexico
- Department of Anthropology, Durham University, Durham, DH1 3LE, UK
| | - Helen L Ball
- Department of Anthropology, Durham University, Durham, DH1 3LE, UK
| | - Karen L Kramer
- Department of Anthropology, Univesity of Utah, Salt Lake City, RM 4625, USA
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Development, validation, and application of a Brazilian sleep myths and truths assessment scale (SLEEP-MTAS). Sleep Med 2022; 90:17-25. [DOI: 10.1016/j.sleep.2021.12.017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/17/2021] [Revised: 12/15/2021] [Accepted: 12/30/2021] [Indexed: 11/22/2022]
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Casiraghi L, de la Iglesia HO. Sleep Under Preindustrial Conditions: What We Can Learn from It. Methods Mol Biol 2022; 2482:1-14. [PMID: 35610416 DOI: 10.1007/978-1-0716-2249-0_1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Human sleep is regulated by light in two fundamental ways: The light-dark (LD) cycle entrains a circadian clock that in turn regulates sleep timing, and light per se can acutely inhibit sleep. Throughout evolution, these sleep regulatory systems became highly sensitive to the effects of light and they can be affected by the relatively low light intensities that are used indoors. Thus, postindustrial living conditions have created built environments that have isolated humans from the natural LD cycle and exposed them to an artificial one that can affect daily sleep timing. Studying indigenous communities that have differential access to electricity, as well as communities living in highly urbanized areas, we and others have shown that human access to artificial light has delayed the daily onset of sleep but has had a smaller effect on its offset, leading to an overall reduction in sleep duration that is pervasive in modern societies. In this chapter we discuss these studies, highlight their main findings, and point to their limitations.
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Subjective sleep quality before and during the COVID-19 pandemic in a Brazilian rural population. Sleep Health 2021; 8:167-174. [PMID: 34924345 PMCID: PMC8675050 DOI: 10.1016/j.sleh.2021.11.007] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2021] [Revised: 11/02/2021] [Accepted: 11/12/2021] [Indexed: 11/21/2022]
Abstract
OBJECTIVES Prior studies have examined sleep during the coronavirus disease 2019 (COVID-19) pandemic, but have few compared sleep measured both during and prior to COVID. We examined the impact of the COVID-19 pandemic on subjective sleep quality in general and separately by gender and age (<50 vs. ≥50 years). Further, we compared sleep quality between those who did and did not follow quarantine orders. METHODS This sample is from the Baependi Heart Study, a family-based cohort of adults in South-eastern Brazil. Longitudinal data were from 417 individuals who completed the Pittsburgh Sleep Quality Index (PSQI) twice: between January 2010 and September 2014 (pre-COVID) and during the COVID-19 stay-at-home order March-June, 2020. Cross-sectional analysis included 800 participants. RESULTS Mean (±SD) PSQI scores were significantly higher during than before COVID-19 (5.7 ± 3.8 vs. 5.0 ± 3.3, p < .01). This increase was significant among women and among adults ≥50 years but not in men or younger adults. The significant increase in PSQI was only observed in those who quarantined during COVID-19 (5.9 ±3.7 vs. 5.2 ±3.4, p < .01) and not those who did not quarantine (5.0 ± 3.7 vs. 4.5 ± 3, p = .12). In cross-sectional analyses, individuals who quarantined had higher PSQI scores than nonquarantined individuals (6.1 ± 3.9 vs. 5.0 ± 3.5, p < .01). The quarantine status-dependent differences were significant for women (6.4 ± 4 vs. 5.2 ± 3.7, p < .01) and older adults (6.6 ± 0.1 vs. 5.5 ± 3.3, p = .04). Differences by quarantine status were attenuated after adjusting for age and gender. CONCLUSIONS Subjective sleep quality declined during the COVID-19 pandemic, particularly among women, older adults, and those compliant to quarantine orders.
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Lu Q, Wu S, Wang S, Xiao J. Influence of occupation type on the association between sleep duration and impaired fasting glucose: results from a Chinese population-based study. BMJ Open 2021; 11:e042066. [PMID: 34135029 PMCID: PMC8211085 DOI: 10.1136/bmjopen-2020-042066] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
Abstract
OBJECTIVES Systematic evaluation of the influence of occupation type on the association between sleep-glucose metabolism DESIGN: A cross-sectional study. SETTING The Nantong Metabolic Syndrome Study is a Chinese population-based study. PARTICIPANTS 20 502 participants aged 18-74 years old. INTERVENTION No intervention. PRIMARY AND SECONDARY OUTCOME MEASURES Impaired fasting glucose (IFG). RESULTS A total of 1503 participants (7.33%) with a slightly longer sleep duration had IFG. After being stratified according to occupation, a sleep duration of ≥10 hours daily corresponded to a 1.321-fold risk of IFG (95% CI 1.071 to 1.628, p=0.0092) among moderate and heavy physical workers compared with those with a daily sleep duration of 7-9 hours. There was no significant relationship between sleep and IFG among other types of workers. Moreover, we discovered a gender difference in the influence of occupation on the sleep-IFG. A positive association among moderate and heavy physical men and a negative association among light or sedentary men were established, but not in unemployed men. However, a positive association was evident only in unemployed women; there was no significant association among other occupations. CONCLUSION This study highlights the role of occupation in the relationship of sleep-glucose metabolism. A gender difference was found to have been influenced by occupational types on the sleep-metabolic association.
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Affiliation(s)
- Qingyun Lu
- Department of Epidemiology and Medical Statistics, Nantong University, Nantong, China
| | - Shangxi Wu
- Department of Epidemiology and Medical Statistics, Nantong University, Nantong, China
| | - Shiyu Wang
- Department of Epidemiology and Medical Statistics, Nantong University, Nantong, China
| | - Jing Xiao
- Department of Epidemiology and Medical Statistics, Nantong University, Nantong, China
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6
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Perotta B, Arantes-Costa FM, Enns SC, Figueiro-Filho EA, Paro H, Santos IS, Lorenzi-Filho G, Martins MA, Tempski PZ. Sleepiness, sleep deprivation, quality of life, mental symptoms and perception of academic environment in medical students. BMC MEDICAL EDUCATION 2021; 21:111. [PMID: 33596885 PMCID: PMC7890911 DOI: 10.1186/s12909-021-02544-8] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/12/2020] [Accepted: 02/03/2021] [Indexed: 06/01/2023]
Abstract
BACKGROUND It has been previously shown that a high percentage of medical students have sleep problems that interfere with academic performance and mental health. METHODS To study the impact of sleep quality, daytime somnolence, and sleep deprivation on medical students, we analyzed data from a multicenter study with medical students in Brazil (22 medical schools, 1350 randomized medical students). We applied questionnaires of daytime sleepiness, quality of sleep, quality of life, anxiety and depression symptoms and perception of educational environment. RESULTS 37.8% of medical students presented mild values of daytime sleepiness (Epworth Sleepiness Scale - ESS) and 8.7% presented moderate/severe values. The percentage of female medical students that presented ESS values high or very high was significantly greater than male medical students (p < 0.05). Students with lower ESS scores presented significantly greater scores of quality of life and perception of educational environment and lower scores of depression and anxiety symptoms, and these relationships showed a dose-effect pattern. Medical students reporting more sleep deprivation showed significantly greater odds ratios of presenting anxiety and depression symptoms and lower odds of good quality of life or perception of educational environment. CONCLUSIONS There is a significant association between sleep deprivation and daytime sleepiness with the perception of quality of life and educational environment in medical students.
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Affiliation(s)
- Bruno Perotta
- Mackenzie Evangelical School of Medicine - Parana, Curitiba, Brazil
- Department of Medicine, School of Medicine of the University of Sao Paulo, Sao Paulo, Brazil
| | - Fernanda M Arantes-Costa
- Department of Medicine, School of Medicine of the University of Sao Paulo, Sao Paulo, Brazil
- Center for Development of Medical Education, School of Medicine of University of Sao Paulo, Sao Paulo, Brazil
| | - Sylvia C Enns
- Center for Development of Medical Education, School of Medicine of University of Sao Paulo, Sao Paulo, Brazil
| | | | - Helena Paro
- Department of Gynecology & Obstetrics, Federal University of Uberlandia, Uberlandia, Brazil
| | - Itamar S Santos
- Department of Medicine, School of Medicine of the University of Sao Paulo, Sao Paulo, Brazil
- Center for Development of Medical Education, School of Medicine of University of Sao Paulo, Sao Paulo, Brazil
| | - Geraldo Lorenzi-Filho
- Department of Cardio-Pneumology, School of Medicine of the University of Sao Paulo, Sao Paulo, Brazil
| | - Milton A Martins
- Department of Medicine, School of Medicine of the University of Sao Paulo, Sao Paulo, Brazil.
- Center for Development of Medical Education, School of Medicine of University of Sao Paulo, Sao Paulo, Brazil.
| | - Patricia Z Tempski
- Department of Medicine, School of Medicine of the University of Sao Paulo, Sao Paulo, Brazil
- Center for Development of Medical Education, School of Medicine of University of Sao Paulo, Sao Paulo, Brazil
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7
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Ruiz FS, Beijamini F, Beale AD, Gonçalves BDSB, Vartanian D, Taporoski TP, Middleton B, Krieger JE, Vallada H, Arendt J, Pereira AC, Knutson KL, Pedrazzoli M, von Schantz M. Early chronotype with advanced activity rhythms and dim light melatonin onset in a rural population. J Pineal Res 2020; 69:e12675. [PMID: 32598502 PMCID: PMC7508839 DOI: 10.1111/jpi.12675] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/21/2020] [Revised: 06/11/2020] [Accepted: 06/18/2020] [Indexed: 11/28/2022]
Abstract
Studying communities at different stages of urbanisation and industrialisation can teach us how timing and intensity of light affect the circadian clock under real-life conditions. We have previously described a strong tendency towards morningness in the Baependi Heart Study, located in a small rural town in Brazil. Here, we tested the hypothesis that this morningness tendency is associated with early circadian phase based on objective measurements (as determined by dim light melatonin onset, DLMO, and activity) and light exposure. We also analysed how well the previously collected chronotype questionnaire data were able to predict these DLMO values. The average DLMO observed in 73 participants (40 female) was 20:03 ± 01:21, SD, with an earlier average onset in men (19:38 ± 01:16) than in women (20:24 ± 01:21; P ≤ .01). However, men presented larger phase angle between DLMO and sleep onset time as measured by actigraphy (4.11 hours vs 3.16 hours; P ≤ .01). Correlational analysis indicated associations between light exposure, activity rhythms and DLMO, such that early DLMO was observed in participants with higher exposure to light, higher activity and earlier light exposure. The strongest significant predictor of DLMO was morningness-eveningness questionnaire (MEQ) (beta=-0.35, P ≤ .05), followed by age (beta = -0.47, P ≤ .01). Sex, light exposure and variables derived from the Munich chronotype questionnaire were not significant predictors. Our observations demonstrate that both early sleep patterns and earlier circadian phase have been retained in this small rural town in spite of availability of electrification, in contrast to metropolitan postindustrial areas.
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Affiliation(s)
- Francieli S. Ruiz
- Department of Psychiatry, University of São Paulo School of Medicine, São Paulo, SP, Brazil
- Faculty of Health and Medical Sciences, University of Surrey, Guildford, Surrey, UK
| | - Felipe Beijamini
- Department of Psychiatry, University of São Paulo School of Medicine, São Paulo, SP, Brazil
- Federal University of Fronteira Sul, Realeza, PR, Brazil
| | - Andrew D. Beale
- Faculty of Health and Medical Sciences, University of Surrey, Guildford, Surrey, UK
| | | | - Daniel Vartanian
- School of Arts, Science, and Humanities, University of São Paulo, São Paulo, Brazil
| | - Tâmara P. Taporoski
- Department of Psychiatry, University of São Paulo School of Medicine, São Paulo, SP, Brazil
- Feinberg School of Medicine, Northwestern University, Chicago, IL, USA
| | | | - José E. Krieger
- Incor, University of São Paulo School of Medicine, São Paulo, SP, Brazil
| | - Homero Vallada
- Department of Psychiatry, University of São Paulo School of Medicine, São Paulo, SP, Brazil
| | - Josephine Arendt
- Faculty of Health and Medical Sciences, University of Surrey, Guildford, Surrey, UK
| | | | | | - Mario Pedrazzoli
- School of Arts, Science, and Humanities, University of São Paulo, São Paulo, Brazil
| | - Malcolm von Schantz
- Department of Psychiatry, University of São Paulo School of Medicine, São Paulo, SP, Brazil
- Faculty of Health and Medical Sciences, University of Surrey, Guildford, Surrey, UK
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Martins AJ, Isherwood CM, Vasconcelos SP, Lowden A, Skene DJ, Moreno CR. The effect of urbanization on sleep, sleep/wake routine, and metabolic health of residents in the Amazon region of Brazil. Chronobiol Int 2020; 37:1335-1343. [DOI: 10.1080/07420528.2020.1802287] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
| | | | | | - Arne Lowden
- Stress Research Institute, Department of Psychology, University of Stockholm, Stockholm, Stockholm, Sweden
| | - Debra J. Skene
- Faculty of Health & Medical Sciences, University of Surrey, UK
| | - Claudia R.C. Moreno
- School of Public Health, University of São Paulo, São Paulo, Brazil
- Stress Research Institute, Department of Psychology, University of Stockholm, Stockholm, Stockholm, Sweden
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Association between Sleep Timing and Weight Status among 14- to 19-Year-Old Adolescents in Wuhan, China. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2020; 17:ijerph17165703. [PMID: 32784581 PMCID: PMC7460288 DOI: 10.3390/ijerph17165703] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 06/19/2020] [Revised: 07/13/2020] [Accepted: 07/14/2020] [Indexed: 11/30/2022]
Abstract
This study examined the cross-sectional and longitudinal association of sleep timing with weight status in 14- to 19-year-old adolescents in Wuhan, China. A prospective school-based study was conducted in Wuhan, China between 28 May and 29 September 2019. Data on sociodemographic information, academic performance, diet, mental health status, physical activity, sleep characteristics, body weight, and height were collected. A linear regression model and binary logistic regression model were performed. A total of 1194 adolescents were included in the analysis. Adolescents who woke up before 05:45 had higher body mass index (BMI) Z-score (odds ratio (OR) with 95% confidence interval (CI) = 1.28 (1.05, 1.57), p = 0.02) and higher odds of overweight/obesity (odds ratio (OR) with 95% confidence interval (CI) = 1.74 (1.10, 2.76), p = 0.02) at baseline after fully adjustment for covariates, compared with those who woke up after 05:45. Longitudinal data showed a nonsignificant association between waking up time and change in BMI Z-score (p = 0.18). No association of bedtime with weight status was observed in this sample after full adjustment (p > 0.1). Earlier waking up time might contribute to overweight and obesity in adolescents; however, more data are needed to test and elucidate this relationship.
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Carvalho FG, Cunha AMD, Tonon AC, Pereira FDS, Matte U, Callegari-Jacques SM, Hidalgo MP. Poor sleep quality associates with self-reported psychiatric and cardiometabolic symptoms independently of sleep timing patterns in a large sample of rural and urban workers. J Sleep Res 2020; 29:e12969. [PMID: 31909859 DOI: 10.1111/jsr.12969] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2019] [Revised: 11/08/2019] [Accepted: 11/23/2019] [Indexed: 12/19/2022]
Abstract
Poor sleep associates with mental and cardiometabolic pathological outcomes. The participation of sleep timing features in the pathways by which this relationship occurs is not clear. This study aims to evaluate the interrelationship between sleep quality and self-reported psychiatric/cardiometabolic symptoms, considering mediation and moderation effects of sleep timing patterns, and urban versus rural work environment, respectively; and to verify the association between sleep quality and polymorphisms of AANAT, RORA and TIMELESS genes. An epidemiological survey was performed in a rural area in southern Brazil. Eight-hundred and twenty-nine subjects were evaluated for sleep quality using the Pittsburgh Sleep Quality Index, and sleep timing patterns using the Munich Chronotype Questionnaire. Work characteristics and psychiatric/cardiometabolic symptoms were assessed using a structured self-report questionnaire. Three polymorphisms of AANAT, RORA and TIMELESS (rs3760138, rs782931 and rs774045, respectively) were genotyped in blood samples. We found statistically significant associations of poor sleep quality with self-reported psychiatric symptoms (B = 0.382; 95% CI 0.289-0.476; adjusted p-value <.001), and with self-reported cardiometabolic symptoms (B = 0.079; 95% CI 0.013-0.151; adjusted p-value = .048). The genetic analysis showed that RORA GA/AA genotype was associated to poor sleep quality (B = 0.146, 95% CI 0.054-0.239; adjusted p-value = .004). No moderated mediation effects were observed in the conditional analysis. TIMELESS polymorphism was not included in the analysis due to the low frequency of risk genotypes. These results yield new insights regarding the interrelationship between sleep characteristics and psychiatric/cardiometabolic self-reported symptoms, taking into account genes related to the biological clocks and melatonin pathways.
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Affiliation(s)
- Felipe Gutiérrez Carvalho
- Laboratório de Cronobiologia e Sono, Hospital de Clínicas de Porto Alegre (HCPA)/Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, Brazil.,Graduate Program in Psychiatry and Behavioral Sciences, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, Brazil
| | - Ana Maria Delgado Cunha
- Laboratório de Cronobiologia e Sono, Hospital de Clínicas de Porto Alegre (HCPA)/Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, Brazil
| | - André Comiran Tonon
- Laboratório de Cronobiologia e Sono, Hospital de Clínicas de Porto Alegre (HCPA)/Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, Brazil.,Graduate Program in Psychiatry and Behavioral Sciences, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, Brazil
| | - Fernanda Dos Santos Pereira
- Centro de Pesquisa Experimental, Unidade de Análises Moleculares e de Proteínas (UAMP), Hospital de Clínicas de Porto Alegre (HCPA), Porto Alegre, Brazil
| | - Ursula Matte
- Gene Therapy Center, Experimental Research Center, Hospital de Clínicas de Porto Alegre (HCPA), Porto Alegre, Brazil
| | - Sidia Maria Callegari-Jacques
- Departamento de Estatística, Instituto de Matemática e Estatística, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, Brazil
| | - Maria Paz Hidalgo
- Laboratório de Cronobiologia e Sono, Hospital de Clínicas de Porto Alegre (HCPA)/Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, Brazil.,Graduate Program in Psychiatry and Behavioral Sciences, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, Brazil
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Taporoski TP, Duarte NE, Pompéia S, Sterr A, Gómez LM, Alvim RO, Horimoto ARVR, Krieger JE, Vallada H, Pereira AC, von Schantz M, Negrão AB. Heritability of semantic verbal fluency task using time-interval analysis. PLoS One 2019; 14:e0217814. [PMID: 31185027 PMCID: PMC6559646 DOI: 10.1371/journal.pone.0217814] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2018] [Accepted: 05/20/2019] [Indexed: 01/27/2023] Open
Abstract
Individual variability in word generation is a product of genetic and environmental influences. The genetic effects on semantic verbal fluency were estimated in 1,735 participants from the Brazilian Baependi Heart Study. The numbers of exemplars produced in 60 s were broken down into time quartiles because of the involvement of different cognitive processes—predominantly automatic at the beginning, controlled/executive at the end. Heritability in the unadjusted model for the 60-s measure was 0.32. The best-fit model contained age, sex, years of schooling, and time of day as covariates, giving a heritability of 0.21. Schooling had the highest moderating effect. The highest heritability (0.17) was observed in the first quartile, decreasing to 0.09, 0.12, and 0.0003 in the following ones. Heritability for average production starting point (intercept) was 0.18, indicating genetic influences for automatic cognitive processes. Production decay (slope), indicative of controlled processes, was not significant. The genetic influence on different quartiles of the semantic verbal fluency test could potentially be exploited in clinical practice and genome-wide association studies.
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Affiliation(s)
- T. P. Taporoski
- Institute of Psychiatry (LIM-23), Faculdade de Medicina FMUSP, Universidade de Sao Paulo, Sao Paulo, SP, Brazil
- Department of Biochemical Sciences, Faculty of Health and Medical Sciences, University of Surrey, Guildford, Surrey, United Kingdom
- Laboratory of Genetics and Molecular Cardiology, Heart Institute, Faculty of Medicine, University of São Paulo, São Paulo, SP, Brazil
| | - N. E. Duarte
- Laboratory of Genetics and Molecular Cardiology, Heart Institute, Faculty of Medicine, University of São Paulo, São Paulo, SP, Brazil
- Departmento de Matemáticas, Universidad Nacional de Colombia, Manizales, Colombia
| | - S. Pompéia
- Department of Psychobiology, Universidade Federal de São Paulo–Escola Paulista de Medicina, São Paulo, SP, Brazil
| | - A. Sterr
- Department of Psychological Sciences, University of Surrey, Guildford, Surrey, United Kingdom
| | - L. M. Gómez
- Laboratory of Genetics and Molecular Cardiology, Heart Institute, Faculty of Medicine, University of São Paulo, São Paulo, SP, Brazil
| | - R. O. Alvim
- Laboratory of Genetics and Molecular Cardiology, Heart Institute, Faculty of Medicine, University of São Paulo, São Paulo, SP, Brazil
- Postgraduate Program in Public Health, Federal University of Espírito Santo, Vitória, ES, Brazil
| | - A. R. V. R. Horimoto
- Laboratory of Genetics and Molecular Cardiology, Heart Institute, Faculty of Medicine, University of São Paulo, São Paulo, SP, Brazil
| | - J. E. Krieger
- Laboratory of Genetics and Molecular Cardiology, Heart Institute, Faculty of Medicine, University of São Paulo, São Paulo, SP, Brazil
| | - H. Vallada
- Institute of Psychiatry (LIM-23), Faculdade de Medicina FMUSP, Universidade de Sao Paulo, Sao Paulo, SP, Brazil
| | - A. C. Pereira
- Laboratory of Genetics and Molecular Cardiology, Heart Institute, Faculty of Medicine, University of São Paulo, São Paulo, SP, Brazil
| | - M. von Schantz
- Institute of Psychiatry (LIM-23), Faculdade de Medicina FMUSP, Universidade de Sao Paulo, Sao Paulo, SP, Brazil
- Department of Biochemical Sciences, Faculty of Health and Medical Sciences, University of Surrey, Guildford, Surrey, United Kingdom
- * E-mail:
| | - A. B. Negrão
- Institute of Psychiatry (LIM-23), Faculdade de Medicina FMUSP, Universidade de Sao Paulo, Sao Paulo, SP, Brazil
- Laboratory of Genetics and Molecular Cardiology, Heart Institute, Faculty of Medicine, University of São Paulo, São Paulo, SP, Brazil
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12
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Poor sleep quality and lipid profile in a rural cohort (The Baependi Heart Study). Sleep Med 2019; 57:30-35. [DOI: 10.1016/j.sleep.2018.12.028] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/19/2018] [Revised: 08/15/2018] [Accepted: 12/20/2018] [Indexed: 12/11/2022]
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13
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Wendt A, Costa CS, Machado AKF, Costa FS, Neves RG, Flores TR, Santos I, Wehrmeister FC. Sleep disturbances and daytime fatigue: data from the Brazilian National Health Survey, 2013. CAD SAUDE PUBLICA 2019; 35:e00086918. [PMID: 30864612 DOI: 10.1590/0102-311x00086918] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2018] [Accepted: 10/01/2018] [Indexed: 11/21/2022] Open
Abstract
This study aims to describe the prevalence of sleep disturbances and daytime fatigue and their association with socio-demographic and behavioral factors. Data from the Brazilian National Health Survey conducted in 2013 with 60,202 adults (≥ 18 years old) were used. The outcomes evaluated were self-reported sleep disturbances and daytime fatigue in the last two weeks. Sleep disturbance was defined as the presence of difficulty to fall asleep, frequently waking up during the night or sleeping more than usual; daytime fatigue was defined as the presence of not feeling rested and motivated during the day, feeling tired and lacking energy. Sociodemographic, lifestyle and chronic health aspects were explored as exposures for both outcomes. Prevalence of sleep disturbances and daytime fatigue were 14.9% (14.4-15.4) and 11.9% (11.4-12.3), respectively. Both outcomes were more common in women, older people, people with no formal education, smokers and among physically inactive individuals. The association with education was inverse (the highest the level of education the lower the prevalence ratio - PR - of sleep disturbances and daytime fatigue; adjusted p-value for trend < 0.001). Prevalence of sleep disturbances combined with daytime fatigue was 6.7% (6.4-7.1) and was about 6 times higher among those with three or more chronic health disturbances (PR = 6.2; 95%CI: 5.3-7.2). Strategies to decrease the prevalence of sleep disturbances and daytime fatigue should be encouraged and focused on chronically ill individuals that share other modifiable risk factors.
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Affiliation(s)
- Andrea Wendt
- Universidade Federal de Pelotas, Pelotas, Brasil
| | | | | | | | | | | | - Iná Santos
- Universidade Federal de Pelotas, Pelotas, Brasil
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Pilz LK, Levandovski R, Oliveira MAB, Hidalgo MP, Roenneberg T. Sleep and light exposure across different levels of urbanisation in Brazilian communities. Sci Rep 2018; 8:11389. [PMID: 30061685 PMCID: PMC6065379 DOI: 10.1038/s41598-018-29494-4] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2018] [Accepted: 06/26/2018] [Indexed: 12/22/2022] Open
Abstract
Quilombos are settlements originally founded by Africans and African descendants (Quilombolas) in remote parts of Brazil to escape slavery. Due to individual histories, Quilombos nowadays exhibit different states of industrialisation, making them ideal for studying the influence of electrification on daily behaviour. In a comparative approach, we aimed to understand whether and how human sleep changes with the introduction of artificial light. We investigated daily rest-activity-rhythms and sleep-patterns in the Quilombolas' by both wrist actimetry and the Munich ChronoType Questionnaire (MCTQ; the results of these two instruments correlated highly). Seven communities (MCTQ: N = 213/actimetry: N = 125) were compared in this study. Light exposure, phase of activity, sleep timing and duration differ across communities with various levels of urbanisation and histories of access to electricity. People living without electricity and those, who acquired it only very recently on average sleep earlier than those in more urbanised communities (mid-sleep about 1 hour earlier); sleep duration tends to be longer. Our results and those of others show that use of electricity and modern lifestyles have changed sleep behaviour. To understand the consequences of these changes for health, further studies are warranted.
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Affiliation(s)
- Luísa K Pilz
- Laboratório de Cronobiologia e Sono, Hospital de Clínicas de Porto Alegre (HCPA)/Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, RS, Brazil
- Programa de Pós-Graduação em Psiquiatria e Ciências do Comportamento, Faculdade de Medicina - UFRGS, Porto Alegre, RS, Brazil
| | - Rosa Levandovski
- Programa de Pós-Graduação em Avaliação e Produção de Tecnologias para o SUS - GHC, Porto Alegre, RS, Brazil
- Programa de Pós-Graduação em Saúde Coletiva - UFRGS, Porto Alegre, RS, Brazil
| | - Melissa A B Oliveira
- Laboratório de Cronobiologia e Sono, Hospital de Clínicas de Porto Alegre (HCPA)/Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, RS, Brazil
- Programa de Pós-Graduação em Psiquiatria e Ciências do Comportamento, Faculdade de Medicina - UFRGS, Porto Alegre, RS, Brazil
| | - Maria Paz Hidalgo
- Laboratório de Cronobiologia e Sono, Hospital de Clínicas de Porto Alegre (HCPA)/Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, RS, Brazil
- Programa de Pós-Graduação em Psiquiatria e Ciências do Comportamento, Faculdade de Medicina - UFRGS, Porto Alegre, RS, Brazil
| | - Till Roenneberg
- Institute of Medical Psychology, LMU, Munich, BY, Germany.
- Visiting Professor at UFRGS/CAPES, Porto Alegre, RS, Brazil.
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Simonelli G, Marshall NS, Grillakis A, Miller CB, Hoyos CM, Glozier N. Sleep health epidemiology in low and middle-income countries: a systematic review and meta-analysis of the prevalence of poor sleep quality and sleep duration. Sleep Health 2018; 4:239-250. [DOI: 10.1016/j.sleh.2018.03.001] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2017] [Revised: 02/01/2018] [Accepted: 03/05/2018] [Indexed: 12/30/2022]
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16
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Pereira-Morales AJ, Adan A, Bussi IL, Camargo A. Anxiety symptomatology, sex and chronotype: The mediational effect of diurnal sleepiness. Chronobiol Int 2018; 35:1354-1364. [DOI: 10.1080/07420528.2018.1479713] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Angela J. Pereira-Morales
- PhD Program in Public Health, School of Medicine, Universidad Nacional de Colombia, Bogotá, Colombia
| | - Ana Adan
- Department of Clinical Psychology and Psychobiology, School of Psychology, University of Barcelona, Barcelona, Spain
- Institute of Neurosciences, University of Barcelona, Barcelona, Spain
| | - Ivana L. Bussi
- Department of Biology, University of Washington, Seattle, WA, USA
| | - Andrés Camargo
- School of Nursing, Universidad de Ciencias Aplicadas y Ambientales. U.D.C.A, Bogotá, Colombia
- PhD Program in Health Sciences, School of Medicine, Universidad Antonio Nariño, Bogotá, Colombia
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17
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Alencar JCND, Leocadio-Miguel MA, Duarte LL, Louzada F, Fontenele Araujo J, Pedrazzoli M. Self-reported discomfort associated with Daylight Saving Time in Brazilian tropical and subtropical zones. Ann Hum Biol 2017; 44:628-635. [PMID: 28715917 DOI: 10.1080/03014460.2017.1355982] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
BACKGROUND Daylight Saving Time (DST) annually moves clocks 1 hour forward, when daytime is longer than night. Previous studies from medium and high latitude locations have pointed to a disruptive effect of DST on human circadian rhythms. Since Brazil is an equatorial country implementing DST, a different relationship between photic and social synchronisers may interfere with DST effects. AIM To explore the prevalence and duration of self-reported discomfort related to DST among Brazilian residents (latitude 12-33° S, longditude 39-57° W). It was hypothesised that an elevated prevalence of self-reported discomfort would be found in Brazil, due to the pronounced uncoupling between social and geophysical synchronisers. SUBJECTS AND METHODS In total, 12 467 volunteers completed a web-based, Brazilian version of Horne-Östberg Morningness-Eveningness Questionnaire, provided demographic information, and answered questions related to DST complaints (discomfort, duration of discomfort). RESULTS Of the total sample, 45.43% reported no discomfort related to DST, with meaningful proportions for all chronotypes. However, eveningness was most associated with discomfort. About one fourth of the total sample reported discomfort over the whole DST period. Gender interaction is largely supported by these results. CONCLUSIONS DST at low latitude locations may be disruptive for circadian rhythms, since seasonality of sunrise near the equator is negligible or very mild.
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Affiliation(s)
| | - Mario André Leocadio-Miguel
- b Departamento de Fisiologia , Universidade Federal do Rio Grande do Norte , Natal , Brazil.,c Programa de Pós-graduação em Psicobiologia, Universidade Federal do Rio Grande do Norte , Natal , Brazil
| | - Leandro Lourenção Duarte
- d Centro de Ciência da Saúde, Universidade Federal do Reconcavo da Bahia , Santo Antônio de Jesus , Brazil
| | - Fernando Louzada
- e Departamento de Fisiologia , Universidade Federal do Parana , Curitiba , Brazil
| | - John Fontenele Araujo
- b Departamento de Fisiologia , Universidade Federal do Rio Grande do Norte , Natal , Brazil.,c Programa de Pós-graduação em Psicobiologia, Universidade Federal do Rio Grande do Norte , Natal , Brazil
| | - Mario Pedrazzoli
- f Escola de Artes, Ciências e Humanidades, Universidade de Sao Paulo , Sao Paulo , Brazil
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18
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Comparison between an African town and a neighbouring village shows delayed, but not decreased, sleep during the early stages of urbanisation. Sci Rep 2017; 7:5697. [PMID: 28720787 PMCID: PMC5515911 DOI: 10.1038/s41598-017-05712-3] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2017] [Accepted: 06/01/2017] [Indexed: 01/09/2023] Open
Abstract
The well-established negative health outcomes of sleep deprivation, and the suggestion that availability of electricity may enable later bed times without compensating sleep extension in the morning, have stimulated interest in studying communities whose sleep pattern may resemble a pre-industrial state. Here, we describe sleep and activity in two neighbouring communities, one urban (Milange) and one rural (Tengua), in a region of Mozambique where urbanisation is an ongoing process. The two communities differ in the amount and timing of daily activity and of light exposure, with later bedtimes (≈1 h) associated with more evening and less daytime light exposure seen in the town of Milange. In contrast to previous reports comparing communities with and without electricity, sleep duration did not differ between Milange (7.28 h) and Tengua (7.23 h). Notably, calculated sleep quality was significantly poorer in rural Tengua than in Milange, and poor sleep quality was associated with a number of attributes more characteristic of rural areas, including more intense physical labour and less comfortable sleeping arrangements. Thus, whilst our data support the hypothesis that access to electricity delays sleep timing, the higher sleep quality in the urban population also suggests that some aspects of industrialisation are beneficial to sleep.
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Christoph MJ, Grigsby-Toussaint DS, Baingana R, Ntambi JM. Physical Activity, Sleep, and BMI Percentile in Rural and Urban Ugandan Youth. Ann Glob Health 2017; 83:311-319. [PMID: 28619406 DOI: 10.1016/j.aogh.2017.04.005] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
BACKGROUND Uganda is experiencing a dual burden of over- and undernutrition, with overweight prevalence increasing while underweight remains common. Potential weight-related factors, particularly physical activity, sleep, and rural/urban status, are not currently well understood or commonly assessed in Ugandan youth. OBJECTIVE The purpose of this study was to pilot test a survey measuring weight-related factors in rural and urban Ugandan schoolchildren. METHODS A cross-sectional survey measured sociodemographics, physical activity, sleep patterns, and dietary factors in 148 rural and urban schoolchildren aged 11-16 in central Uganda. Height and weight were objectively measured. Rural and urban youth were compared on these factors using χ2 and t tests. Regression was used to identify correlates of higher body mass index (BMI) percentile in the full sample and nonstunted youth. FINDINGS Youth were on average 12.1 ± 1.1 years old; underweight (10%) was more common than overweight (1.4%). Self-reported sleep duration and subjective sleep quality did not differ by rural/urban residence. Rural children overall had higher BMI percentile and marginally higher stunting prevalence. In adjusted analyses in both the full and nonstunted samples, higher BMI percentile was related to living in a rural area, higher frequency of physical activity, and higher subjective sleep quality; it was negatively related to being active on weekends. In the full sample, higher BMI percentile was also related to female gender, whereas in nonstunted youth, higher BMI was related to age. BMI percentile was unrelated to sedentary time, performance of active chores and sports, and dietary factors. CONCLUSIONS This study is one of the first to pilot test a survey assessing weight-related factors, particularly physical activity and sleep, in Ugandan schoolchildren. BMI percentile was related to several sociodemographic, sleep, and physical activity factors among primarily normal-weight school children in Uganda, providing a basis for understanding weight status in the context of the nutrition transition.
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Affiliation(s)
| | - Diana S Grigsby-Toussaint
- Department of Kinesiology and Community Health and Division of Nutritional Sciences, University of Illinois Urbana-Champaign, Champaign, IL.
| | - Rhona Baingana
- Department of Biochemistry and Sports Science, College of Natural Sciences, Makerere University, Kampala, Uganda
| | - James M Ntambi
- Departments of Biochemistry and Nutritional Sciences, University of Wisconsin-Madison, Madison, WI
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