L Kuula1, M Gradisar2, K Martinmäki3, C Richardson4, D Bonnar2, K Bartel2, C Lang5, L Leinonen3, A K Pesonen6. 1. SleepWell Research Program, Faculty of Medicine, University of Helsinki, Finland. Electronic address: liisa.kuula-paavola@helsinki.fi. 2. School of Psychology, Flinders University, Adelaide, Australia. 3. Polar Electro Oy, Research and Technology, Finland. 4. Centre for Emotional Health, Department of Psychology, Macquarie University, Australia. 5. Department of Sport, Exercise and Health, Section Sport and Psychosocial Health, University of Basel, Switzerland. 6. SleepWell Research Program, Faculty of Medicine, University of Helsinki, Finland.
Abstract
BACKGROUND: Development induces changes in sleep, and its duration has been reported to change as a function of aging. Additionally, sleep timing is a marker of pubertal maturation, where during adolescence, the circadian rhythm shifts later. Typically, this is manifested in a later sleep onset in the evening and later awakening in the morning. These changes across development seem to be universal around the world but are unlikely to persist into adulthood. METHODS: This study utilized accelerometer data from 17,355 participants aged 16-30 years (56% female) measured by validated Polar wearables over a 14-day period. We compared sleep duration, chronotype (sleep midpoint) and weekend catch-up (ie, social jetlag) sleep across ages and regions over 242,948 nights. RESULTS: The data indicate a decline in sleep duration as well as a dramatic shift in sleep onset times throughout adolescence. This continues well into early adulthood and stabilizes nearer age 30. Differences in sleep duration across ages were significant, and ranged from 7:53 h at age 16 to 7:29 h at age 30 in the sample. Additionally, there was a clear difference between females and males throughout adolescence and young adulthood: girls had longer sleep duration and earlier timed sleep in the current study. Differences in sleep were found between regions across the world, and across European areas. CONCLUSIONS: Both sleep duration and sleep timing go through a clear developmental pattern, particularly in early adulthood. Females had an earlier sleep midpoint and obtained more sleep. Regional differences in sleep occurred across the world. Crown
BACKGROUND: Development induces changes in sleep, and its duration has been reported to change as a function of aging. Additionally, sleep timing is a marker of pubertal maturation, where during adolescence, the circadian rhythm shifts later. Typically, this is manifested in a later sleep onset in the evening and later awakening in the morning. These changes across development seem to be universal around the world but are unlikely to persist into adulthood. METHODS: This study utilized accelerometer data from 17,355 participants aged 16-30 years (56% female) measured by validated Polar wearables over a 14-day period. We compared sleep duration, chronotype (sleep midpoint) and weekend catch-up (ie, social jetlag) sleep across ages and regions over 242,948 nights. RESULTS: The data indicate a decline in sleep duration as well as a dramatic shift in sleep onset times throughout adolescence. This continues well into early adulthood and stabilizes nearer age 30. Differences in sleep duration across ages were significant, and ranged from 7:53 h at age 16 to 7:29 h at age 30 in the sample. Additionally, there was a clear difference between females and males throughout adolescence and young adulthood: girls had longer sleep duration and earlier timed sleep in the current study. Differences in sleep were found between regions across the world, and across European areas. CONCLUSIONS: Both sleep duration and sleep timing go through a clear developmental pattern, particularly in early adulthood. Females had an earlier sleep midpoint and obtained more sleep. Regional differences in sleep occurred across the world. Crown
Authors: Sarah Berryhill; Christopher J Morton; Adam Dean; Adam Berryhill; Natalie Provencio-Dean; Salma I Patel; Lauren Estep; Daniel Combs; Saif Mashaqi; Lynn B Gerald; Jerry A Krishnan; Sairam Parthasarathy Journal: J Clin Sleep Med Date: 2020-02-11 Impact factor: 4.062
Authors: Marissa A Evans; Daniel J Buysse; Anna L Marsland; Aidan G C Wright; Jill Foust; Lucas W Carroll; Naina Kohli; Rishabh Mehra; Adam Jasper; Swathi Srinivasan; Martica H Hall Journal: Sleep Date: 2021-09-13 Impact factor: 5.849
Authors: Shangru Lyu; Hong Xing; Mark P DeAndrade; Pablo D Perez; Fumiaki Yokoi; Marcelo Febo; Arthur S Walters; Yuqing Li Journal: Neuroscience Date: 2020-05-22 Impact factor: 3.590
Authors: Meredith L Wallace; Nicholas Kissel; Martica H Hall; Anne Germain; Karen A Matthews; Wendy M Troxel; Peter L Franzen; Daniel J Buysse; Charles Reynolds; Kathryn A Roecklein; Heather E Gunn; Brant P Hasler; Tina R Goldstein; Dana L McMakin; Eva Szigethy; Adriane M Soehner Journal: Psychosom Med Date: 2022-01-28 Impact factor: 3.864
Authors: Sangha Lee; Daniel Bonnar; Brandy Roane; Michael Gradisar; Ian C Dunican; Michele Lastella; Gemma Maisey; Sooyeon Suh Journal: Int J Environ Res Public Health Date: 2021-01-14 Impact factor: 3.390