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Ziporyn TD, Owens JA, Wahlstrom KL, Wolfson AR, Troxel WM, Saletin JM, Rubens SL, Pelayo R, Payne PA, Hale L, Keller I, Carskadon MA. Adolescent sleep health and school start times: Setting the research agenda for California and beyond: A research summit summary: A research summit summary. Sleep Health 2021; 8:11-22. [PMID: 34991996 DOI: 10.1016/j.sleh.2021.10.008] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2021] [Revised: 09/18/2021] [Accepted: 10/14/2021] [Indexed: 12/26/2022]
Abstract
In fall 2019, California passed and signed into law SB328, the first US statewide legislation explicitly designed to protect adolescent sleep health by requiring most California public school districts to start no earlier than 8:00 AM for middle schools and 8:30 AM for high schools. Recognizing the unique opportunity presented by the bill's 3-year implementation period, a group of experts in adolescent sleep and school start times held a virtual summit on January 22-23, 2021 to (1) summarize the research on adolescent sleep and school start time change; (2) develop recommendations for relevant, refined, and innovative research areas and research questions; (3) provide input regarding research design, methodology, and implementation; and (4) offer a forum for networking, exchanging ideas, and establishing interdisciplinary research collaborations. Participants represented a multidisciplinary range of academic backgrounds including sleep and circadian biology, neuroscience, education, medicine, public health, mental health, safety, public policy, economics, implementation science, criminology, diversity studies, and science communication. This paper summarizes summit presentations regarding current knowledge on adolescent sleep health and school start times and key research recommendations from small group workshops on topics including research design and tools, methodological issues, sleep health disparities, logistical challenges in conducting school-based research, public-health impact, and novel and expanded approaches to research.
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Affiliation(s)
| | | | - Kyla L Wahlstrom
- Department of Organizational Leadership, Policy and Development, College of Education and Human Development, University of Minnesota, Minneapolis, Minnesota, USA
| | - Amy R Wolfson
- Department of Psychology, Loyola University Maryland, Baltimore, Maryland, USA
| | - Wendy M Troxel
- Behavior and Policy Sciences, RAND Corporation, Pittsburgh, Pennsylvania, USA
| | - Jared M Saletin
- EP Bradley Hospital Sleep Research Laboratory, Alpert Medical School of Brown University, Providence, Rhode Island, USA
| | - Sonia L Rubens
- Department of Counseling Psychology, Santa Clara University, Santa Clara, California, USA
| | - Rafael Pelayo
- Stanford University School of Medicine, Department of Psychiatry & Behavioral Sciences, Stanford, California, USA
| | | | - Lauren Hale
- Program in Public Health, Department of Family, Population, and Preventive Medicine, Renaissance School of Medicine, Stony Brook University, Stony Brook, New York, USA
| | - Irena Keller
- Department of Psychology, Las Positas College, Livermore, California, USA
| | - Mary A Carskadon
- EP Bradley Hospital Sleep Research Laboratory, Alpert Medical School of Brown University, Providence, Rhode Island, USA
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Estevan I. Psychometric properties of the Morningness/Eveningness scale for children among Uruguayan adolescents: the role of school start times. BIOL RHYTHM RES 2020. [DOI: 10.1080/09291016.2020.1846284] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Ignacio Estevan
- Programa de Neuropsicología y Neurobiología, Facultad de Psicología, Universidad de la República, Montevideo, Uruguay
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Carvalho-Mendes RP, Dunster GP, de la Iglesia HO, Menna-Barreto L. Afternoon School Start Times Are Associated with a Lack of Both Social Jetlag and Sleep Deprivation in Adolescents. J Biol Rhythms 2020; 35:377-390. [PMID: 32508224 DOI: 10.1177/0748730420927603] [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] [Indexed: 12/29/2022]
Abstract
The delayed circadian timing of adolescents creates a conflict with early school start times (SSTs). We used wrist actimetry to compare sleep parameters and routine nighttime activities in middle school students attending either a morning (0700 to 1200 h) or an afternoon (1230 to 1730 h) school shift. On school days, students from both shifts (n = 21 for morning shift, n = 20 for afternoon shift, ages 12-14 years) had a similar sleep onset, but morning-shift students had an earlier sleep offset and a 1 h 45 min shorter sleep duration than their afternoon peers, who slept the recommended 8 to 10 h of daily sleep. Only morning-shift students had afternoon naps, but this afternoon sleep was not sufficient to overcome sleep deprivation. On weekends, sleep onsets and offsets did not differ between shifts. Because only morning-shift students woke up later and slept longer (2 h 3 min) on weekends, they were also the only ones who experienced social jetlag. Daily surveys on their nighttime (from 1800 to 0600 h) activities indicated there was no difference between shifts in the time spent on leisure or using electronic media during school days, but students from both shifts spent more time in these activities during the weekend. Our study confirms that early SST in adolescents is associated with sleep deprivation and suggests that schedules that start much later than typically considered may be needed to eliminate sleep deprivation in adolescents.
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Affiliation(s)
| | - Gideon P Dunster
- Department of Biology, University of Washington, Seattle, Washington, USA
| | - Horacio O de la Iglesia
- Department of Biology, University of Washington, Seattle, Washington, USA.,Graduate Program in Neuroscience, University of Washington, Seattle, Washington, USA
| | - Luiz Menna-Barreto
- Instituto de Psicologia, Universidade de São Paulo, São Paulo, SP, Brazil.,Escola de Artes, Ciências e Humanidades, Universidade de São Paulo, São Paulo, SP, Brazil
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Estevan I, Silva A, Vetter C, Tassino B. Short Sleep Duration and Extremely Delayed Chronotypes in Uruguayan Youth: The Role of School Start Times and Social Constraints. J Biol Rhythms 2020; 35:391-404. [DOI: 10.1177/0748730420927601] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
During adolescence, biological, psychosocial, and contextual factors converge in a “perfect storm” and have been put forward to explain the delay in chronotype observed at this age and the prevalence of disrupted sleep. This study provides evidence to support that chronotype and sleep patterns (particularly sleep duration) are socially constrained and to identify novel significant social predictors. Uruguayan public school activities are arranged in up to 4 shifts, creating a natural experiment to examine the effect of school timing on questionnaire-based assessments of sleep and chronotype. In this study, 268 high school students (15-18 years old) who attended school either on morning (0730 to 1130 h) or afternoon shifts (1130 h to 1530 h) responded to an adapted School Sleep Habits Survey. Students attending afternoon shifts had later chronotypes (a 1.5-h later midpoint of sleep on free days adjusted for sleep debt) than those attending the morning shift. Besides shift, evening social activities (including dinner time) were further identified as key predictors of late chronotypes, whereas age and gender were not. Sleep on school days was overall advanced and reduced with respect to weekends, and these effects were stronger in morning-shift students. Weekend sleep duration was similar between shifts, which probably caused the prevalence of reduced sleep durations (average weekly sleep duration, SDweek <8 h) to be higher in morning-shift students (almost 80%) than in afternoon-shift ones (34%). Reduced sleep duration was significantly higher in morning-shift students. In addition, age, chronotype, and dinner time became relevant determinants of sleep deficit only in the morning-shift students. Besides the important social constraint of early school start time, this is the first study to confirm the significance of other types of social pressures on both adolescents’ chronotype and sleep deficit, which can be useful as potential new targets for effective policies to protect adolescent sleep.
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Affiliation(s)
- Ignacio Estevan
- Programa de Neuropsicología y Neurobiología, Facultad de Psicología, Universidad de la República, Uruguay
| | - Ana Silva
- Laboratorio de Neurociencias, Facultad de Ciencias, Universidad de la República, Uruguay
| | - Céline Vetter
- Department of Integrative Physiology, University of Colorado Boulder, Boulder, Colorado, USA
| | - Bettina Tassino
- Sección Etología, Facultad de Ciencias, Universidad de la República, Uruguay
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Troxel WM, Wolfson AR. The intersection between sleep science and policy: introduction to the special issue on school start times. Sleep Health 2017; 3:419-422. [PMID: 29157634 DOI: 10.1016/j.sleh.2017.10.001] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Wendy M Troxel
- RAND Corporation, Behavioral and Policy Sciences Division, 4570 Fifth Avenue, Suite 600, Pittsburgh, PA 15213.
| | - Amy R Wolfson
- Loyola University Maryland, Department of Psychology, 4501 North Charles Street, Baltimore, MD 21210.
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