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Schokman A, Cheung J, Klinner C, Milton A, Naehrig D, Thornton N, Bin YS, Kairaitis K, Glozier N. A qualitative exploration of the lived experience of mothers caring for a child with narcolepsy. J Clin Sleep Med 2024; 20:699-707. [PMID: 38169428 PMCID: PMC11063712 DOI: 10.5664/jcsm.10984] [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] [Received: 06/27/2023] [Revised: 12/11/2023] [Accepted: 12/12/2023] [Indexed: 01/05/2024]
Abstract
STUDY OBJECTIVES Parents/carers of a child with narcolepsy are often required to become experts in narcolepsy and navigate health care, education, and welfare systems on behalf of their child. Managing pediatric narcolepsy is complex and challenges the child and the entire family, yet few studies have explored carers' experiences. METHODS Twenty mothers (50% had a child with narcolepsy < 18 years at the time of interview; 85% narcolepsy with cataplexy) participated in a 1:1 semistructured interview. Participation from fathers was sought; however, none were recruited. A multidisciplinary team of researchers/clinicians analyzed interview transcripts using thematic analysis. RESULTS Mothers perceived that most people misunderstood the whole-person impact of narcolepsy, including their child's peers, teachers, and support networks. Narcolepsy had a substantial psychological impact on both the child and the whole family yet was largely unaddressed by health care professionals, leaving mothers unsure of where to turn for help. Most parents described negative experiences with their child's specialist, often perceiving the specialists to lack knowledge specific to narcolepsy. Information about illness trajectory and support services was limited or inaccessible, fueling many mothers' hopes and fears for their child's future. Mothers also frequently described feelings of abandonment by the health care system. CONCLUSIONS Our results contextualize the whole-person impact of narcolepsy from the perspective of parents and carers, highlighting the need for proactive inclusion of parents/carers in developing health care policy and practice. It calls for developing tools and resources to capture "well-managed" narcolepsy from the perspective of parents/carers for use in research and clinical practice. CITATION Schokman A, Cheung J, Klinner C, et al. A qualitative exploration of the lived experience of mothers caring for a child with narcolepsy. J Clin Sleep Med. 2024;20(5):699-707.
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Affiliation(s)
- Aaron Schokman
- Faculty of Medicine and Health, University of Sydney, Camperdown, NSW, Australia
- Sleep Research Group, Charles Perkins Centre, University of Sydney, Camperdown, NSW, Australia
| | - Janet Cheung
- Faculty of Medicine and Health, University of Sydney, Camperdown, NSW, Australia
| | - Christiane Klinner
- Faculty of Medicine and Health, University of Sydney, Camperdown, NSW, Australia
| | - Alyssa Milton
- Faculty of Medicine and Health, University of Sydney, Camperdown, NSW, Australia
| | - Diana Naehrig
- Faculty of Medicine and Health, University of Sydney, Camperdown, NSW, Australia
| | - Nicollette Thornton
- Faculty of Medicine and Health, University of Sydney, Camperdown, NSW, Australia
| | - Yu Sun Bin
- Faculty of Medicine and Health, University of Sydney, Camperdown, NSW, Australia
- Sleep Research Group, Charles Perkins Centre, University of Sydney, Camperdown, NSW, Australia
| | - Kristina Kairaitis
- Faculty of Medicine and Health, University of Sydney, Camperdown, NSW, Australia
- Department of Respiratory and Sleep Medicine, University of Sydney at Westmead Hospital, Westmead, NSW, Australia
- Ludwig Engel Centre for Respiratory Research, Westmead Institute for Medical Research, Westmead, NSW, Australia
| | - Nick Glozier
- Faculty of Medicine and Health, University of Sydney, Camperdown, NSW, Australia
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Cristi-Montero C, Martínez-Flores R, Espinoza-Puelles JP, Favero-Ramirez L, Zurita-Corvalan N, Cañete IC, Leppe J, Ferrari G, Sadarangani KP, Cancino-López J, Hernandez-Jaña S, Farias TY, Lemes VB, Rodríguez-Rodríguez F, Brand C. Study protocol and rationale of "the UP project": evaluating the effectiveness of active breaks on health indicators in desk-based workers. Front Public Health 2024; 12:1363015. [PMID: 38566792 PMCID: PMC10985339 DOI: 10.3389/fpubh.2024.1363015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2023] [Accepted: 03/07/2024] [Indexed: 04/04/2024] Open
Abstract
Background Excessive sedentary time has been negatively associated with several health outcomes, and physical activity alone does not seem to fully counteract these consequences. This panorama emphasizes the essential of sedentary time interruption programs. "The Up Project" seeks to assess the effectiveness of two interventions, one incorporating active breaks led by a professional and the other utilizing a computer application (self-led), of both equivalent duration and intensity. These interventions will be compared with a control group to evaluate their impact on physical activity levels, sedentary time, stress perception, occupational pain, and cardiometabolic risk factors among office workers. Methods This quasi-experimental study includes 60 desk-based workers from universities and educational institutes in Valparaiso, Chile, assigned to three groups: (a) booster breaks led by professionals, (b) computer prompts that are unled, and (c) a control group. The intervention protocol for both experimental groups will last 12 weeks (only weekdays). The following measurements will be performed at baseline and post-intervention: cardiometabolic risk based on body composition (fat mass, fat-free mass, and bone mass evaluated by DXA), waist circumference, blood pressure, resting heart rate, and handgrip strength. Physical activity and sedentary time will be self-reported and device-based assessed using accelerometry. Questionnaires will be used to determine the perception of stress and occupational pain. Discussion Governments worldwide are addressing health issues associated with sedentary behavior, particularly concerning individuals highly exposed to it, such as desk-based workers. Despite implementing certain strategies, there remains a noticeable gap in comprehensive research comparing diverse protocols. For instance, studies that contrast the outcomes of interventions led by professionals with those prompted by computers are scarce. This ongoing project is expected to contribute to evidence-based interventions targeting reduced perceived stress levels and enhancing desk-based employees' mental and physical well-being. The implications of these findings could have the capacity to lay the groundwork for future public health initiatives and government-funded programs.
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Affiliation(s)
- Carlos Cristi-Montero
- IRyS Group, Physical Education School, Pontificia Universidad Católica de Valparaíso, Valparaíso, Chile
| | - Ricardo Martínez-Flores
- IRyS Group, Physical Education School, Pontificia Universidad Católica de Valparaíso, Valparaíso, Chile
| | | | - Laura Favero-Ramirez
- IRyS Group, Physical Education School, Pontificia Universidad Católica de Valparaíso, Valparaíso, Chile
| | - Natalia Zurita-Corvalan
- IRyS Group, Physical Education School, Pontificia Universidad Católica de Valparaíso, Valparaíso, Chile
| | - Ignacio Castillo Cañete
- IRyS Group, Physical Education School, Pontificia Universidad Católica de Valparaíso, Valparaíso, Chile
| | - Jaime Leppe
- School of Physical Therapy Faculty of Medicine, Clínica Alemana, Universidad del Desarrollo, Santiago, Chile
| | - Gerson Ferrari
- Universidad de Santiago de Chile (USACH), Escuela de Ciencias de la Actividad Física, el Deporte y la Salud, Santiago, Chile
- Facultad de Ciencias de la Salud, Universidad Autónoma de Chile, Providencia, Santiago, Chile
| | - Kabir P. Sadarangani
- Universidad Autónoma de Chile, Santiago, Chile
- Escuela de Kinesiología, Facultad de Salud Y Odontología, Universidad Diego Portales, Santiago, Chile
| | - Jorge Cancino-López
- Laboratorio de Fisiología del Ejercicio y Metabolismo, Escuela de Kinesiología, Facultad de Medicina, Universidad Finis Terrae. Santiago, Santiago, Chile
| | - Sam Hernandez-Jaña
- IRyS Group, Physical Education School, Pontificia Universidad Católica de Valparaíso, Valparaíso, Chile
| | | | - Vanilson Batista Lemes
- Universidade Federal do Rio Grande do Sul, Escola de Educação Física, Fisioterapia e Dança, Porto Alegre, Brazil
| | | | - Caroline Brand
- IRyS Group, Physical Education School, Pontificia Universidad Católica de Valparaíso, Valparaíso, Chile
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Zhu J, Zheng T, Jin H, Wei M, Yu J, Ni J, Sun K, Zhang J. Sleep Disturbances in Early Gestation and the Risks of Hypertensive Disorders of Pregnancy: A Prospective Cohort Study. Am J Epidemiol 2024; 193:479-488. [PMID: 37968336 DOI: 10.1093/aje/kwad223] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2022] [Revised: 10/31/2023] [Accepted: 11/14/2023] [Indexed: 11/17/2023] Open
Abstract
Maternal poor sleep quality may increase blood pressure during pregnancy, but sound evidence is still limited and inconsistent. To evaluate whether sleep disturbances in early gestation are risk factors for the development of hypertensive disorders of pregnancy, we conducted the Early Life Plan Project from June 2016 to December 2019. Maternal sleep patterns were assessed at 12-16 weeks of gestation by using the Pittsburgh Sleep Quality Index questionnaire. For gestational hypertension and preeclampsia, we estimated adjusted odds ratios (ORs) and 95% confidence intervals (CIs) using multinomial logistic regression models adjusting for potential confounders. Among 5,532 eligible women, we observed that maternal blood pressure in early gestation was significantly higher in women with low sleep efficiency (≤85%), long sleep duration (≥9 hours/night), and snoring. Compared with nonsnorers, snoring in early gestation was independently associated with preeclampsia (OR = 1.72 (95% CI: 1.09, 2.73) for snoring once or twice per week; OR = 2.06 (95% CI: 1.01, 4.31) for snoring 3 or more times per week), particularly for term preeclampsia (OR = 1.79 (95% CI: 1.08, 2.95) and 2.26 (95% CI: 1.03, 4.95), respectively). Results suggest that snoring in early gestation may be a significant risk factor for preeclampsia, with a dose-response pattern.
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Yan L, Sun H, Chen Y, Yu X, Zhang J, Li P. Association of Subjective Sleep Pattern with Self-reported Diabetes in China. RESEARCH SQUARE 2023:rs.3.rs-3196675. [PMID: 37674728 PMCID: PMC10479435 DOI: 10.21203/rs.3.rs-3196675/v1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/08/2023]
Abstract
There is limited research investigating the relationship between self-reported diabetes mellitus and subjective sleep patterns. Our study aims to explore this association by analyzing trends in a cohort study conducted in China using data from the China Health and Nutrition Survey longitudinal research (CHNS). We used multilevel logistic regression models to analyze the relationship. Our findings indicate that the prevalence of self- reported diabetes in China increased from 1.10% in 2004 to 3.36% in 2015, with an increase in the prevalence of short-term sleep from 7.03-10.24%. The prevalence of self-reported diabetes increased with increasing BMI levels (Normal and below: 0.67-2.16%, Overweight: 1.58-4.35%, Obesity: 2.68-6.57%, p < 0.01). The short-term sleep subgroup had the highest prevalence (2.14-5.64%). Additionally, we found significant associations between age, education level, ethnicity, coffee, smoking, drinking and the self-reported diabetes. Interestingly, the risk ratios for self-reported diabetes differed between sleep durations. With 6-8hours as the reference group, the risk ratios for self-reported diabetes in the short-term, and long-term sleep subgroups were 1.80 (95% CI: 1.23-2.63), and 1.41 (95%CI: 1.01-1.96), respectively. Raising awareness about the impact of irregular sleep duration on diabetes risk is essential, and these initiatives may serve as effective policies for diabetes control.
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Affiliation(s)
- Lijing Yan
- the Second Affiliated Hospital of Xi 'an Jiaotong University
| | - Huanhuan Sun
- the First Affiliated Hospital of Xi'an Jiaotong University
| | - Yuling Chen
- the First Affiliated Hospital of Xi'an Jiaotong University
| | - Xiaohui Yu
- the First Affiliated Hospital of Xi 'an Jiaotong University
| | - Jingru Zhang
- the First Affiliated Hospital of Xi'an Jiaotong University
| | - Peijie Li
- the First Affiliated Hospital of Xi'an Jiaotong University
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5
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Sleeping giant: A research agenda for politics and chronobiology. Politics Life Sci 2023; 41:298-302. [PMID: 36880550 DOI: 10.1017/pls.2022.16] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Sleep research presents an important frontier of discovery for political science. While sleep has largely been neglected by political scientists, human psychology is inextricably linked with sleep and so political cognition must be as well. Existing work shows that sleep is linked to political participation and ideology, and that contentious politics can disrupt sleep. I propose three directions for future research-on participatory democracy, on ideology, and on how context shapes sleep-politics links. I also note that sleep research intersects with the study of political institutions, of war and conflict, of elite decision-making, and of normative theory. In short, political scientists across subfields can and should consider whether and how sleep influences political life in their area of expertise and how to influence relevant policies. This new research agenda will enrich our theories of politics and enable us to identify pressing areas for policy interventions to revitalize our democracy.
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6
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Orihuela CA, Mrug S, Evans RR. Associations between sleepiness, sleep duration, and academic outcomes in early adolescence. PSYCHOLOGY IN THE SCHOOLS 2022. [DOI: 10.1002/pits.22843] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Catheryn A. Orihuela
- Departments of Human Studies and Psychology University of Alabama at Birmingham Birmingham Alabama USA
| | - Sylvie Mrug
- Departments of Human Studies and Psychology University of Alabama at Birmingham Birmingham Alabama USA
| | - Retta R. Evans
- Departments of Human Studies and Psychology University of Alabama at Birmingham Birmingham Alabama USA
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Carvalho KSBD, Lauar JC, Drager LF, Moyses RM, Elias RM. Duração do sono autorrelatada e objetiva em pacientes com DRC: contam a mesma história? J Bras Nefrol 2022. [DOI: 10.1590/2175-8239-jbn-2022-0015pt] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Resumo Introdução: Há discordância entre os dados sobre duração do sono obtidos a partir de questionários e medições objetivas. Não se sabe se isto também é verdade para indivíduos com DRC. Aqui comparamos a duração do sono autorrelatada com a duração do sono obtida por meio de actigrafia. Métodos: Este estudo prospectivo incluiu indivíduos adultos com DRC estadio 3 recrutados entre Setembro/2016 e Fevereiro/2019. Avaliamos a duração subjetiva do sono, fazendo a seguinte questão: “Quantas horas de sono real você teve à noite?” Resultados: Os pacientes (N=34) eram relativamente jovens (51 ± 13 anos). A duração do sono autorrelatada e mensurada foi de 7,1 ± 1,7 e 6,9 ± 1,6 horas, respectivamente, sem correlação entre elas (p=0,165). Embora a diferença média entre as medições tenha sido de 0,21 h, os limites de concordância variaram de -3,7 a 4,1 h. Conclusão: Pacientes com DRC que não estão em diálise apresentam uma percepção equivocada do sono. Dados sobre a duração do sono devem ser obtidos preferencialmente a partir de medições objetivas em pacientes com DRC.
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Affiliation(s)
| | | | | | | | - Rosilene M. Elias
- Universidade de São Paulo, Brazil; Universidade Nove de Julho, Brazil
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8
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Carvalho KSBD, Lauar JC, Drager LF, Moyses RM, Elias RM. Self-reported and objective sleep duration in patients with CKD: are they telling the same story? J Bras Nefrol 2022; 45:102-105. [PMID: 35993531 PMCID: PMC10139718 DOI: 10.1590/2175-8239-jbn-2022-0015en] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2022] [Accepted: 06/21/2022] [Indexed: 11/22/2022] Open
Abstract
Abstract Introduction: There is disagreement between data on sleep duration obtained from questionnaires and objective measurements. Whether this is also true for individuals with CKD is unknown. Here we compared self-reported sleep duration with sleep duration obtained by actigraphy. Methods: This prospective study included adult individuals with stage 3 CKD recruited between September/2016 and February/2019. We evaluated subjective sleep duration by asking the following question: “How many hours of actual sleep did you get at night?” Results: Patients (N=34) were relatively young (51 ± 13 years). Self-reported and measured sleep duration were 7.1 ± 1.7 and 6.9 ± 1.6 hours, respectively, with no correlation between them (p=0.165). Although the mean difference between measurements was 0.21 h, the limits of agreement ranged from -3.7 to 4.1 h. Conclusion: Patients with CKD who are not on dialysis have an erroneous sleep perception. Data on sleep duration should be preferentially obtained from objective measurements in patients with CKD.
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Affiliation(s)
| | | | | | | | - Rosilene M. Elias
- Universidade de São Paulo, Brazil; Universidade Nove de Julho, Brazil
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9
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Ferrari G, Alberico C, Drenowatz C, Kovalskys I, Gómez G, Rigotti A, Cortés LY, García MY, Liria-Domínguez MR, Herrera-Cuenca M, Peralta M, Marques A, Marconcin P, Cristi-Montero C, Leme ACB, Zimberg IZ, Farías-Valenzuela C, Fisberg M, Rollo S. Prevalence and sociodemographic correlates of meeting the Canadian 24-hour movement guidelines among latin american adults: a multi-national cross-sectional study. BMC Public Health 2022; 22:217. [PMID: 35109819 PMCID: PMC8812134 DOI: 10.1186/s12889-022-12613-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2021] [Accepted: 01/21/2022] [Indexed: 12/30/2022] Open
Abstract
BACKGROUND 24-hour movement behaviors, including moderate-to-vigorous physical activity (MVPA), sedentary time (ST), and sleep duration, have important implications for health across the lifespan. However, no studies exist that have examined the integration of these 24-hour movement behaviors in Latin America. The purpose of this study was to examine the prevalence of meeting the Canadian 24-Hour Movement Guideline recommendations and sociodemographic correlates of meeting the guidelines in adults from eight Latin American countries. METHODS This was a multi-national cross-sectional study of 2338 adults aged 18 to 64 years from the Latin American Study of Nutrition and Health. MVPA and ST data were collected using accelerometers. Sleep duration was self-reported using a daily log. Socio-demographic correlates included sex, age, education level, and marital status. Meeting the 24-hour movement guidelines was defined as: ≥150 min/week of MVPA; ≤8 h/day of ST; and between 7 and 9 h/day of sleep. Logistic regression models were estimated on pooled data. RESULTS The prevalence of adults who met the MVPA, ST, sleep duration, and integrated recommendations was 48.3, 22.0, 19.4, and 1.6%, respectively. Overall, being a woman (OR: 0.72; 95%CI: 0.55,0.93) and having a middle (0.63; 0.47,0.85) or high education level (0.31; 0.17,0.56) was associated with lower odds of meeting all three of the 24-hour movement guideline recommendations. Being married (1.70; 1.25,2.29) was associated with greater odds of meeting all three recommendations. Being a woman (0.46; 0.39,0.55), aged 50-64 years (0.77; 0.60,0.97), and married (0.79; 0.65,0.96) were associated with lower odds of meeting the MVPA recommendation. Having a middle (0.64; 0.50,0.80) or high (0.36; 0.23,0.55) education level was associated with lower odds and being married (1.86; 1.46,2.36) was associated with greater odds of meeting the ST recommendation. Being a woman (0.63; 0.51,0.78) was associated with lower odds; whereas being aged 50-64 years (1.40; 1.04,1.88) and having a middle education level (1.37; 1.09,1.73) were associated with greater odds of meeting the sleep duration recommendation. CONCLUSIONS Overall, the proportion of Latin American adults achieving healthy levels of 24-hour movement behaviors was low. Further efforts are needed to promote more MVPA, less ST, and sufficient sleep in Latin American adults. TRIAL REGISTRATION Clinical Trials NCT02226627 . Retrospectively registered on August 27, 2014.
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Affiliation(s)
- Gerson Ferrari
- Universidad de Santiago de Chile (USACH), Escuela de Ciencias de la Actividad Física, el Deporte y la Salud, Santiago, Chile. .,Laboratorio de Rendimiento Humano, Grupo de Estudio en Educación, Actividad Física y Salud (GEEAFyS), Universidad Católica del Maule, Talca, Chile.
| | - Claudia Alberico
- JLC Biomedical and Biotechnology Research Institute (BBRI), North Carolina Central University, 1801 Fayetteville St, 27707, Durham, NC, USA
| | - Clemens Drenowatz
- Division of Sport, Physical Activity and Health, University of Education Upper Austria, 4020, Linz, Austria
| | - Irina Kovalskys
- Carrera de Nutrición, Facultad de Ciencias Médicas, Pontificia Universidad Católica Argentina, Buenos Aires, Argentina
| | - Georgina Gómez
- Departamento de Bioquímica, Escuela de Medicina, Universidad de Costa Rica, San José, Costa Rica
| | - Attilio Rigotti
- Centro de Nutrición Molecular y Enfermedades Crónicas, Departamento de Nutrición, Diabetes y Metabolismo, Escuela de Medicina, Pontificia Universidad Católica, Santiago, Chile
| | - Lilia Yadira Cortés
- Departamento de Nutrición y Bioquímica, Pontificia Universidad Javeriana, Bogotá, Colombia
| | - Martha Yépez García
- Colégio de Ciencias de la Salud, Universidad San Francisco de Quito, Quito, Ecuador
| | - Maria Reyna Liria-Domínguez
- Instituto de Investigación Nutricional, La Molina, Lima, Peru.,Faculty of Health Sciences, Universidad Peruana de Ciencias Aplicadas (UPC), Lima, Peru
| | - Marianella Herrera-Cuenca
- Centro de Estudios del Desarrollo, Universidad Central de Venezuela (CENDES- UCV)/Fundación Bengoa, Caracas, Venezuela
| | - Miguel Peralta
- Faculdade de Motricidade Humana, CIPER, Universidade de Lisboa, Lisbon, Portugal.,Faculdade de Medicina, ISAMB, Universidade de Lisboa, Lisbon, Portugal
| | - Adilson Marques
- Faculdade de Motricidade Humana, CIPER, Universidade de Lisboa, Lisbon, Portugal.,Faculdade de Medicina, ISAMB, Universidade de Lisboa, Lisbon, Portugal
| | - Priscila Marconcin
- Faculdade de Motricidade Humana, CIPER, Universidade de Lisboa, Lisbon, Portugal.,KinesioLab, Research Unit in Human Movement Analysis, Instituto Piaget, Almada, Portugal
| | - Carlos Cristi-Montero
- Physical Education School, IRyS Group, Pontificia Universidad Catolica de Valparaiso, Valparaiso, Chile
| | - Ana Carolina B Leme
- Centro de Excelencia em Nutrição e Dificuldades Alimentaes (CENDA), Hospital Infantil Sabará, Instituto Pensi, Fundação José Luiz Egydio Setubal, São Paulo, Brazil
| | - Ioná Zalcman Zimberg
- Departamento de Psicobiologia da Universidade Federal de São Paulo, São Paulo, Brazil
| | | | - Mauro Fisberg
- Centro de Excelencia em Nutrição e Dificuldades Alimentaes (CENDA), Hospital Infantil Sabará, Instituto Pensi, Fundação José Luiz Egydio Setubal, São Paulo, Brazil.,Departamento de Pediatria da Universidade Federal de São Paulo, São Paulo, Brazil
| | - Scott Rollo
- Healthy Active Living and Obesity (HALO) Research Group, Children's Hospital of Eastern Ontario Research Institute, Ottawa, Ontario, Canada.,School of Epidemiology and Public Health, Faculty of Medicine, University of Ottawa, Ottawa, Ontario, Canada
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10
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Santos RB, Giatti S, Aielo AN, Silva WA, Parise BK, Cunha LF, Souza SP, Alencar AP, Lotufo PA, Bensenor IM, Drager LF. Self-reported versus actigraphy-assessed sleep duration in the ELSA-Brasil study: analysis of the short/long sleep duration reclassification. Sleep Breath 2021; 26:1437-1445. [PMID: 34750722 DOI: 10.1007/s11325-021-02489-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2021] [Revised: 07/23/2021] [Accepted: 09/09/2021] [Indexed: 11/24/2022]
Abstract
PURPOSE This study was aimed to determine the magnitude and predictors of self-reported short/long sleep duration (SDUR) reclassifications using objective measurements. METHODS Adult participants from the ELSA-Brasil study performed self-reported SDUR, 7-day wrist actigraphy, and a portable sleep study. We explored two strategies of defining self-reported SDUR reclassification: (1) short and long SDUR defined by <6 and ≥8h, respectively; (2) reclassification using a large spectrum of SDUR categories (<5, 5-6, 7-8, 8-9, and >9 h). RESULTS Data from 2036 participants were used in the final analysis (43% males; age: 49±8 years). Self-reported SDUR were poorly correlated (r=0.263) and presented a low agreement with actigraphy-based total sleep time. 58% of participants who self-reported short SDUR were reclassified into the reference (6-7.99 h) or long SDUR groups using actigraphy data. 88% of participants that self-reported long SDUR were reclassified into the reference and short SDUR. The variables independently associated with higher likelihood of self-reported short SDUR reclassification included insomnia (3.5-fold), female (2.5-fold), higher sleep efficiency (1.35-fold), lowest O2 saturation (1.07-fold), higher wake after sleep onset (1.08-fold), and the higher number of awakening (1.05-fold). The presence of hypertension was associated with a 3.4-fold higher chance of self-reported long SDUR reclassification. Analysis of five self-reported SDUR categories revealed that the more extreme is the SDUR, the greater the self-reported SDUR reclassification. CONCLUSION In adults, we observed a significant rate of short/long SDUR reclassifications when comparing self-reported with objective data. These results underscore the need to reappraise subjective data use for future investigations addressing SDUR.
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Affiliation(s)
- Ronaldo B Santos
- Center of Clinical and Epidemiologic Research (CPCE), University of São Paulo, Av. Prof. Lineu Prestes, 2565 - 4° Andar, Cidade Universitária, São Paulo, SP, 05508-000, Brazil.,Unidade de Hipertensão, Instituto do Coração (InCor), Faculdade de Medicina, University of São Paulo, São Paulo, Brazil
| | - Soraya Giatti
- Center of Clinical and Epidemiologic Research (CPCE), University of São Paulo, Av. Prof. Lineu Prestes, 2565 - 4° Andar, Cidade Universitária, São Paulo, SP, 05508-000, Brazil.,Unidade de Hipertensão, Disciplina de Nefrologia, Faculdade de Medicina, University of São Paulo, São Paulo, Brazil
| | - Aline N Aielo
- Center of Clinical and Epidemiologic Research (CPCE), University of São Paulo, Av. Prof. Lineu Prestes, 2565 - 4° Andar, Cidade Universitária, São Paulo, SP, 05508-000, Brazil.,Unidade de Hipertensão, Disciplina de Nefrologia, Faculdade de Medicina, University of São Paulo, São Paulo, Brazil
| | - Wagner A Silva
- Center of Clinical and Epidemiologic Research (CPCE), University of São Paulo, Av. Prof. Lineu Prestes, 2565 - 4° Andar, Cidade Universitária, São Paulo, SP, 05508-000, Brazil.,Unidade de Hipertensão, Instituto do Coração (InCor), Faculdade de Medicina, University of São Paulo, São Paulo, Brazil
| | - Barbara K Parise
- Center of Clinical and Epidemiologic Research (CPCE), University of São Paulo, Av. Prof. Lineu Prestes, 2565 - 4° Andar, Cidade Universitária, São Paulo, SP, 05508-000, Brazil.,Unidade de Hipertensão, Disciplina de Nefrologia, Faculdade de Medicina, University of São Paulo, São Paulo, Brazil
| | - Lorenna F Cunha
- Center of Clinical and Epidemiologic Research (CPCE), University of São Paulo, Av. Prof. Lineu Prestes, 2565 - 4° Andar, Cidade Universitária, São Paulo, SP, 05508-000, Brazil.,Unidade de Hipertensão, Disciplina de Nefrologia, Faculdade de Medicina, University of São Paulo, São Paulo, Brazil
| | - Silvana P Souza
- Center of Clinical and Epidemiologic Research (CPCE), University of São Paulo, Av. Prof. Lineu Prestes, 2565 - 4° Andar, Cidade Universitária, São Paulo, SP, 05508-000, Brazil.,Unidade de Hipertensão, Instituto do Coração (InCor), Faculdade de Medicina, University of São Paulo, São Paulo, Brazil
| | - Airlane P Alencar
- Department of Statistic, Institute of Mathematics and Statics, University of São Paulo, São Paulo, SP, Brazil
| | - Paulo A Lotufo
- Center of Clinical and Epidemiologic Research (CPCE), University of São Paulo, Av. Prof. Lineu Prestes, 2565 - 4° Andar, Cidade Universitária, São Paulo, SP, 05508-000, Brazil
| | - Isabela M Bensenor
- Center of Clinical and Epidemiologic Research (CPCE), University of São Paulo, Av. Prof. Lineu Prestes, 2565 - 4° Andar, Cidade Universitária, São Paulo, SP, 05508-000, Brazil
| | - Luciano F Drager
- Center of Clinical and Epidemiologic Research (CPCE), University of São Paulo, Av. Prof. Lineu Prestes, 2565 - 4° Andar, Cidade Universitária, São Paulo, SP, 05508-000, Brazil. .,Unidade de Hipertensão, Instituto do Coração (InCor), Faculdade de Medicina, University of São Paulo, São Paulo, Brazil. .,Unidade de Hipertensão, Disciplina de Nefrologia, Faculdade de Medicina, University of São Paulo, São Paulo, Brazil.
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11
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Abstract
Evidence is particularly needed from poorer communities.
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Affiliation(s)
- Gautam Rao
- Department of Economics, Harvard University, Cambridge, MA, USA
| | - Susan Redline
- Division of Sleep and Circadian Disorders, Department of Medicine, Brigham and Women's Hospital, Beth Israel Deaconess Medical Center, and Harvard Medical School, Boston, MA, USA
| | - Frank Schilbach
- Department of Economics, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Heather Schofield
- Department of Medical Ethics and Health Policy, University of Pennsylvania, Philadelphia, PA, USA
| | - Mattie Toma
- Department of Economics, Harvard University, Cambridge, MA, USA
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12
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Bessone P, Rao G, Schilbach F, Schofield H, Toma M. The Economic Consequences of Increasing Sleep Among the Urban Poor. THE QUARTERLY JOURNAL OF ECONOMICS 2021; 136:1887-1941. [PMID: 34220361 PMCID: PMC8242594 DOI: 10.1093/qje/qjab013] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
The urban poor in developing countries face challenging living environments, which may interfere with good sleep. Using actigraphy to measure sleep objectively, we find that low-income adults in Chennai, India, sleep only 5.5 hours a night on average despite spending 8 hours in bed. Their sleep is highly interrupted, with sleep efficiency-sleep per time in bed-comparable to those with disorders such as sleep apnea or insomnia. A randomized three-week treatment providing information, encouragement, and improvements to home sleep environments increased sleep duration by 27 minutes a night by inducing more time in bed. Contrary to expert predictions and a large body of sleep research, increased nighttime sleep had no detectable effects on cognition, productivity, decision making, or well being, and led to small decreases in labor supply. In contrast, short afternoon naps at the workplace improved an overall index of outcomes by 0.12 standard deviations, with significant increases in productivity, psychological well-being, and cognition, but a decrease in work time.
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Affiliation(s)
| | - Gautam Rao
- Harvard University and National Bureau of Economic Research, United States
| | - Frank Schilbach
- Massaschusetts Institute of Technology and National Bureau of Economic Research, United States
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13
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Atukorala I, Pathmeswaran A, Batuwita N, Rajapaksha N, Ratnasiri V, Wijayaratne L, De Silva M, Chang T, Zhang Y, Hunter DJ. Is being barefoot, wearing shoes and physical activity associated with knee osteoarthritis pain flares? Data from a usually barefoot Sri Lankan cohort. Int J Rheum Dis 2020; 24:96-105. [PMID: 33200581 DOI: 10.1111/1756-185x.14024] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2020] [Revised: 09/18/2020] [Accepted: 10/15/2020] [Indexed: 01/13/2023]
Abstract
AIM To identify the association between hours of being barefoot/wearing footwear, physical activity (PA) and knee osteoarthritis pain flares (KOAF). METHODS Persons with a diagnosis of knee osteoarthritis, who reported previous KOAF, were followed up in a 3 months long telephone-based case-crossover study. Exposures to risk factors were assessed every 10 days and whenever the participants experienced a KOAF. Conditional logistic regression examined associations of KOAF with following: hours of being barefoot/using footwear and PA performed (P < .05). RESULTS There were 260 persons recruited, of whom 183 continued longitudinal follow up. Of them, 120 persons had at least one valid KOAF and control period. Participants were female (90%) with mean (SD) age and body mass index of 59.9 (7.0) years, 28.0 (5.0) kg/m2 respectively. Participants were barefoot for a mean duration of 12.7 hours (SD 4.6) and used footwear for 5.1 (SD 4.7) hours daily; 99% wore heel heights <2.5 cm. Duration of being barefoot, 1 and 2 days before, demonstrated reduced multivariate odds of KOAF (odds ratio [OR] = 0.85; 95% CI 0.80-0.90). Moderate PA performed 1, 2 days prior was associated with a significantly increased risk of KOAF (multivariate OR 4.29; 2.52-7.30 and OR 3.36; 2.01-5.61). Similarly, hours of using footwear 1 and 2 days before flare demonstrated increased odds of KOAF (OR 1.15; 1.07-1.23 and 1.10; 1.03-1.18). CONCLUSIONS Increased duration of being barefoot 1 to 2 days before is associated with reduced risk of KOAF. Performing moderate PA 1 to 2 days before was associated with an increased risk of KOAF.
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Affiliation(s)
- Inoshi Atukorala
- Department of Clinical Medicine, Faculty of Medicine, University of Colombo, Colombo, Sri Lanka
| | | | - Nishamani Batuwita
- Department of Clinical Medicine, Faculty of Medicine, University of Colombo, Colombo, Sri Lanka
| | - Nimesha Rajapaksha
- Department of Clinical Medicine, Faculty of Medicine, University of Colombo, Colombo, Sri Lanka
| | - Vishmi Ratnasiri
- Department of Clinical Medicine, Faculty of Medicine, University of Colombo, Colombo, Sri Lanka
| | - Lalith Wijayaratne
- Department of Rheumatology and Rehabilitation (General), National Hospital Sri Lanka, Colombo, Sri Lanka
| | - Monika De Silva
- Department of Rheumatology and Rehabilitation (General), National Hospital Sri Lanka, Colombo, Sri Lanka
| | - Thashi Chang
- Department of Clinical Medicine, Faculty of Medicine, University of Colombo, Colombo, Sri Lanka
| | - Yuqing Zhang
- Division of Rheumatology, Allergy, and Immunology, Department of Medicine, Massachusetts General Hospital, Boston, MA, USA
| | - David John Hunter
- Institute of Bone and Joint Research, Kolling Institute, University of Sydney, Sydney, Australia.,Rheumatology Department, Royal North Shore Hospital, Sydney, NSW, Australia
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14
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Scarlett S, Nolan HN, Kenny RA, O'Connell MDL. Discrepancies in self-reported and actigraphy-based sleep duration are associated with self-reported insomnia symptoms in community-dwelling older adults. Sleep Health 2020; 7:83-92. [PMID: 32732155 DOI: 10.1016/j.sleh.2020.06.003] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2020] [Revised: 06/11/2020] [Accepted: 06/12/2020] [Indexed: 11/30/2022]
Abstract
OBJECTIVES To establish agreement between self-reported and actigraphy-based total sleep time (TST). To determine the impact of self-reported sleep problems on these measurements. DESIGN Cross-sectional study using data from Wave 3 of The Irish Longitudinal Study on Ageing (2014-2015). PARTICIPANTS Community-dwelling older adults, aged ≥50 years, with self-reported sleep information and ≥4 days of actigraphy-based TST (n = 1520). MEASUREMENT Self-reported total sleep time, daytime sleepiness, insomnia symptoms (trouble falling asleep, trouble waking too early) measured during a structured self-interview. Actigraphy-based total TST was collected using GENEactiv wrist-worn accelerometers. Demographic characteristics and health information were controlled for. Analyses included descriptive statistics, reliability and agreement analysis using paired t-tests, intra-class correlations and Bland-Altman analysis. Linear regression was used to model associations with measurement discrepancies. RESULTS Participants reported that they slept 7.0 hours (SD: 1.4, Range: 2.0-13.0 hours) on average, compared to 7.7 hours (SD: 1.2 hours, Range: 3.0-13.0 hours) recorded by accelerometry. Trouble falling asleep or waking too early "most of the time" were associated with under-reporting of sleep by 2.3, and 2.2 hours respectively. Agreement between measurements had an intra-class correlation of 0.18 and wide 95% limits of agreement (-3.90 to 2.55 hours). Under-reporting of sleep was independently associated with insomnia symptoms. CONCLUSION The agreement between self-reported and actigraphy-based TST in community dwelling older adults was low. Self-reported insomnia symptoms were independently associated with under-reporting of sleep. Studies seeking to measure sleep duration should consider inclusion of questions measuring experience of insomnia symptoms to account for potential influence on measurements.
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Affiliation(s)
- Siobhan Scarlett
- The Irish Longitudinal Study on Ageing, Trinity College Dublin, University of Dublin, Ireland.
| | - Hugh N Nolan
- The Irish Longitudinal Study on Ageing, Trinity College Dublin, University of Dublin, Ireland
| | - Rose Anne Kenny
- The Irish Longitudinal Study on Ageing, Trinity College Dublin, University of Dublin, Ireland; Mercer's Institute for Successful Ageing, St James's Hospital, Dublin, Ireland
| | - Matthew D L O'Connell
- The Irish Longitudinal Study on Ageing, Trinity College Dublin, University of Dublin, Ireland; Department of Population Health Sciences, School of Population Health and Environmental Sciences, Kings College London, London, United Kingdom
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15
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Cook I, Mohlabe M, Alberts M. Descriptive epidemiology of objectively-measured, free-living sleep parameters in a rural African setting. BMC Res Notes 2020; 13:310. [PMID: 32611438 PMCID: PMC7329391 DOI: 10.1186/s13104-020-05153-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2020] [Accepted: 06/25/2020] [Indexed: 11/10/2022] Open
Abstract
OBJECTIVES To investigate the descriptive nature of objectively-measured, free-living sleep quantity and quality, and the relationship to adiposity, in a rural African setting in 145 adults (≥ 40 years, female: n = 104, male: n = 41). Wrist-mounted, triaxial accelerometry data was collected over 9 days. Measures of sleep quantity and quality, and physical activity were extracted from valid minute-by-minute data. Adiposity indices were body-mass-index, waist circumference and conicity index. Self-reported data included behavioural, health and socio-demographic variables. Community consultation followed the quantitative data analyses, for validation and interpretation of findings. RESULTS Females had more nocturnal sleep than males (7.2 vs. 6.8 h/night, p = 0.0464) while males recorded more diurnal sleep time (p = 0.0290). Wake after sleep onset and number of awakenings were higher in females, and sleep efficiency was higher in males (p ≤ 0.0225). Sleep indices were generally similar between weekdays and weekends, except for sleep fragmentation index (p = 0.0458). Sleep quantity, but not sleep quality was independently and inversely associated with adiposity (p = 0.0453). Physical activity and morbidity measures were significantly and consistently associated with sleep and adiposity measures (p < 0.0458). The preliminary qualitative data suggests that future studies should include more detailed data around contextual issues of sleep (social, cultural, economic, environment).
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Affiliation(s)
- Ian Cook
- Physical Activity Epidemiology Laboratory (EDST), University of Limpopo (Turfloop Campus), Sovenga, PO Box X1106, Limpopo, 0727, South Africa.
| | - Matlawa Mohlabe
- Department of Pathology and Medical Sciences, University of Limpopo (Turfloop Campus), Sovenga, Limpopo, South Africa
| | - Marianne Alberts
- Department of Pathology and Medical Sciences, University of Limpopo (Turfloop Campus), Sovenga, Limpopo, South Africa
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16
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Scott MC, Hogwood AC, Fralin RC, Weggen JB, Zúñiga TM, Garten RS. Low sleep efficiency does not impact upper or lower limb vascular function in young adults. Exp Physiol 2020; 105:1373-1383. [PMID: 32495341 DOI: 10.1113/ep088658] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2020] [Accepted: 06/01/2020] [Indexed: 12/28/2022]
Abstract
NEW FINDINGS What is the central question of this study? We sought to investigate whether young adults reporting low sleep quality possessed lower vascular function and altered autonomic nervous system modulation when compared with young adults reporting high sleep quality. What is the main finding and its importance? The study revealed that in young adults reporting low sleep quality, neither vascular nor autonomic function was significantly different when compared with young adults reporting high sleep quality. These findings suggest that young adults are either not substantially impacted by or can adequately adapt to the negative consequences commonly associated with poor sleep. ABSTRACT The aim of the study was to investigate whether young adults reporting low sleep quality also possessed lower vascular function, potentially stemming from altered autonomic nervous system modulation, when compared with young adults reporting high sleep quality. Thirty-one healthy young adults (age 24 ± 4 years) underwent a 7 night sleep assessment (Actigraph GT3X accelerometer). After the sleep assessment, subjects meeting specific criteria were separated into high (HSE; ≥85%; n = 11; eight men and three women) and low (LSE; <80%; n = 11; nine men and two women) sleep efficiency groups. Peripheral vascular function was assessed in the upper and lower limb, using the flow-mediated dilatation technique in the arm (brachial artery) and leg (superficial femoral artery). Heart rate variability was evaluated during 5 min of rest and used frequency parameters reflective of parasympathetic and/or sympathetic nervous system modulation (high- and low-frequency parameters). By experimental design, significant differences in sleep quality between groups were reported, with the LSE group exhibiting a longer time awake after sleep onset, higher number of awakenings and longer average time per awakening when compared with the HSE group. Despite these differences in sleep quality, no significant differences in upper and lower limb vascular function and heart rate variability measures were revealed when comparing the LSE and HSE groups. Additionally, in all subjects (n = 31), no correlations between sleep efficiency and vascular function/autonomic modulation were revealed. This study revealed that low sleep quality does not impact upper or lower limb vascular function or autonomic nervous system modulation in young adults.
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Affiliation(s)
- Matthew C Scott
- Department of Kinesiology and Health Sciences, Virginia Commonwealth University, Richmond, VA, USA
| | - Austin C Hogwood
- Department of Kinesiology, University of Virginia, Charlottesville, VA, USA
| | - Richard C Fralin
- Department of Kinesiology and Health Sciences, Virginia Commonwealth University, Richmond, VA, USA
| | - Jennifer B Weggen
- Department of Kinesiology and Health Sciences, Virginia Commonwealth University, Richmond, VA, USA
| | - Tiffany M Zúñiga
- Department of Nutritional Sciences, The University of Arizona, Tucson, AZ, USA
| | - Ryan S Garten
- Department of Kinesiology and Health Sciences, Virginia Commonwealth University, Richmond, VA, USA
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17
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Berger M, Hirotsu C, Haba-Rubio J, Betta M, Bernardi G, Siclari F, Waeber G, Vollenweider P, Marques-Vidal P, Heinzer R. Risk factors of excessive daytime sleepiness in a prospective population-based cohort. J Sleep Res 2020; 30:e13069. [PMID: 32412149 DOI: 10.1111/jsr.13069] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2019] [Revised: 04/17/2020] [Accepted: 04/20/2020] [Indexed: 01/01/2023]
Abstract
Although excessive daytime sleepiness is commonly evaluated in clinical and research settings using the Epworth Sleepiness Scale, few studies have assessed the factors associated with its incidence in the general population. We prospectively investigated the predictors of incident and persistent excessive daytime sleepiness in 2,751 subjects (46.1% men, mean age 56.0 ± 9.8 years) from the CoLaus-PsyCoLaus population-based cohort (Lausanne, Switzerland) over 5 years. Participants completed the Epworth Sleepiness Scale and the Pittsburgh Sleep Quality Index, and underwent a full clinical evaluation at baseline and 5 years afterwards. Ambulatory polysomnography was performed at baseline in a sub-sample of 1,404 subjects. Among the 2,438 subjects without excessive daytime sleepiness (Epworth Sleepiness Scale ≤ 10) at baseline, the 5-year incidence of excessive daytime sleepiness was 5.1% (n = 124). Multivariate logistic regression revealed that male sex, depressive symptoms, reported poor sleep quality and moderate to severe obstructive sleep apnea were independent predictors of incident excessive daytime sleepiness, while older age, moderate coffee consumption, periodic leg movement during sleep and hypertension were independent protective factors. Stratified analysis according to sex and age showed some distinctive associations. Among the 313 patients with excessive daytime sleepiness at baseline, 137 (43.8%) had persistent excessive daytime sleepiness 5 years later. Our findings provide new insights into the predictors of incident excessive daytime sleepiness, but interventional studies are needed to understand the impact of treating these risk factors on the incidence of excessive daytime sleepiness.
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Affiliation(s)
- Mathieu Berger
- Center for Investigation and Research in Sleep (CIRS), Lausanne University Hospital (CHUV), University of Lausanne, Lausanne, Switzerland
| | - Camila Hirotsu
- Center for Investigation and Research in Sleep (CIRS), Lausanne University Hospital (CHUV), University of Lausanne, Lausanne, Switzerland
| | - Jose Haba-Rubio
- Center for Investigation and Research in Sleep (CIRS), Lausanne University Hospital (CHUV), University of Lausanne, Lausanne, Switzerland
| | - Monica Betta
- IMT School for Advanced Studies Lucca, Lucca, Italy
| | | | - Francesca Siclari
- Center for Investigation and Research in Sleep (CIRS), Lausanne University Hospital (CHUV), University of Lausanne, Lausanne, Switzerland
| | - Gerard Waeber
- Department of Medicine, Internal Medicine, Lausanne University Hospital (CHUV), University of Lausanne, Lausanne, Switzerland
| | - Peter Vollenweider
- Department of Medicine, Internal Medicine, Lausanne University Hospital (CHUV), University of Lausanne, Lausanne, Switzerland
| | - Pedro Marques-Vidal
- Department of Medicine, Internal Medicine, Lausanne University Hospital (CHUV), University of Lausanne, Lausanne, Switzerland
| | - Raphael Heinzer
- Center for Investigation and Research in Sleep (CIRS), Lausanne University Hospital (CHUV), University of Lausanne, Lausanne, Switzerland
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18
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Sleep timing and duration in indigenous villages with and without electric lighting on Tanna Island, Vanuatu. Sci Rep 2019; 9:17278. [PMID: 31754265 PMCID: PMC6872597 DOI: 10.1038/s41598-019-53635-y] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2019] [Accepted: 10/31/2019] [Indexed: 11/09/2022] Open
Abstract
It has been hypothesized that sleep in the industrialized world is in chronic deficit, due in part to evening light exposure, which delays sleep onset and truncates sleep depending on morning work or school schedules. If so, societies without electricity may sleep longer. However, recent studies of hunter-gatherers and pastoralists living traditional lifestyles without electricity report short sleep compared to industrialized population norms. To further explore the impact of lifestyles and electrification on sleep, we measured sleep by actigraphy in indigenous Melanesians on Tanna Island, Vanuatu, who live traditional subsistence horticultural lifestyles, in villages either with or without access to electricity. Sleep duration was long and efficiency low in both groups, compared to averages from actigraphy studies of industrialized populations. In villages with electricity, light exposure after sunset was increased, sleep onset was delayed, and nocturnal sleep duration was reduced. These effects were driven primarily by breastfeeding mothers living with electric lighting. Relatively long sleep on Tanna may reflect advantages of an environment in which food access is reliable, climate benign, and predators and significant social conflict absent. Despite exposure to outdoor light throughout the day, an effect of artificial evening light was nonetheless detectable on sleep timing and duration.
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19
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Yetish G, Samson D. Sleep research in non-Western populations reveals novel insights about the breadth and diversity of human sleep patterns. Sleep Health 2018; 4:495-496. [PMID: 30442315 DOI: 10.1016/j.sleh.2018.10.006] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- Gandhi Yetish
- Psychiatry and Biobehavioral Sciences, University of California, Los Angeles, Los Angeles, CA, United States.
| | - David Samson
- Department of Anthropology, University of Toronto, Mississauga, Mississauga, Ontario, Canada
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