Sleep duration trajectories from adolescence to emerging adulthood: Findings from a population‐based birth cohort

Machado, Adriana Kramer Fiala; Wendt, Andrea; Menezes, Ana Maria Baptista; Gonçalves, Helen; Wehrmeister, Fernando César

doi:10.1111/jsr.13155

Cited by 7 publications

(5 citation statements)

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“…Meeting current 24-h movement guidelines is linked to several health outcomes in young population [6] and later during adulthood [7]. However, from adolescence to adulthood, the time spent in some of these behaviors has shown to be reduced (e.g., physical activity [8], sleep duration [9]), and increased in others (e.g., sedentary behavior [10]). Adolescence is characterized by fast physical growth and modifications in body composition generated by the hormonal fluctuations related to puberty [11].…”

Section: Introductionmentioning

confidence: 99%

Twenty-four-hour movement guidelines during adolescence and its association with obesity at adulthood: results from a nationally representative study

et al. 2022

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To determine the association between adherence to the 24-h movement guidelines during adolescence with obesity at adulthood 14 years later in a nationally representative cohort. We analyzed data from 6984 individuals who participated in Waves I (1994–1995) and IV (2008–2009) of the National Longitudinal Study of Adolescent Health (Add Health) in the USA. Obesity was defined by the International Obesity Task Force cut-off points at Wave I and adult cut-points at Wave IV (body mass index [BMI]≥30 kg/m2 and waist circumference [WC]≥102 cm in male and 88 cm in female). Physical activity, screen time and sleep duration were self-reported. Adolescents who met screen time recommendation alone (β = −1.62 cm, 95%CI −2.68 cm to −0.56), jointly with physical activity (β = −2.25 cm, 95%CI −3.75 cm to −0.75 cm), and those who met all three recommendations (β = −1.92 cm, 95%CI −3.81 cm to −0.02 cm) obtained lower WC at Wave IV than those who did not meet any of these recommendations. Our results also show that meeting with screen time recommendations (IRR [incidence rate ratio] = 0.84, 95%CI 0.76 to 0.92) separately and jointly with physical activity recommendations (IRR = 0.86, 95%CI 0.67 to 0.97) during adolescence is associated with lower risk of abdominal obesity at adulthood. In addition, adolescents who met all 24-h movement recommendations had lower risk of abdominal obesity later in life (IRR = 0.76, 95%CI 0.60 to 0.97).Conclusion: Promoting the adherence to the 24-h movement guidelines from adolescence, especially physical activity and screen time, seems to be related with lower risk of abdominal obesity later in life, but not for BMI. What is Known:• Some studies have shown a relationship between adherence to 24-h movement guidelines and adiposity or obesity markers in youth. However, most of these studies have a cross-sectional design or a short follow-up. What is New:• This is the first study which determined the association between adherence to the 24-h movement guidelines during adolescence with obesity at adulthood 14 years later in a nationally representative US cohort.• Meeting the 24-h movement guidelines from adolescence seems to be related with lower risk of abdominal obesity later in life, but not for body mass index.

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Section: Introductionmentioning

confidence: 99%

Twenty-four-hour movement guidelines during adolescence and its association with obesity at adulthood: results from a nationally representative study

et al. 2022

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“…Importantly, the study finds that Taiwanese adolescents report sleeping less than Western adolescents typically report, with later bedtimes and earlier wake‐up times (Laberge et al, 2001; Leger et al, 2012; Lin et al, 2018; Machado et al, 2020; Maslowsky & Ozer, 2014; Olds et al, 2010; Park et al, 2019; Patte et al, 2018; Williams et al, 2013). The results demonstrate that Taiwanese youth sleep far less than the recommended 8–10 h on weekdays during high school (as adolescents) but do sleep the recommended 7–9 h per night as young adults (Hirshkowitz et al, 2015).…”

Section: Introductionmentioning

confidence: 96%

“…But, since the biological need for sleep during this period does not decrease (Carskadon, 2002), one would expect that total sleep duration is relatively stable. However, most extant research finds changes in measured and reported sleep duration from adolescence to emerging adulthood (e.g., Keyes et al, 2015; Leger et al, 2012; Lin et al, 2018; Machado et al, 2020; Olds et al, 2010; Park et al, 2019; Patte et al, 2018; Williams et al, 2013). These findings imply that time demands and expectations from engagement in social institutions during adolescence and emerging adulthood may play a key role in shaping sleep trajectories.…”

Section: Introductionmentioning

confidence: 99%

“…Only a few population‐based, longitudinal studies have extended the investigation of sleep into emerging adulthood; the focus of these is on Western countries and the results are mixed. Machado et al (2020) analyzed a sample of over 3,000 youth at 11, 18, and 22 years old and found a continuous pattern over time of increasingly later bedtimes and decreasing reported sleep duration, for both males and females. Similarly, Park et al (2019) traced a sample of youth in Los Angeles over six years using wrist actigraphy to measure sleep; applying a multilevel growth model they found that sleep duration steadily declined from adolescence to emerging adulthood.…”

Section: Introductionmentioning

confidence: 99%

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Sleep trajectories from early adolescence to emerging adulthood: Evidence from a nine‐year population‐based study

Chen

2021

Journal of Adolescence

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Adolescence to emerging adulthood is a developmental period when individuals experience substantial biological changes and social transitions. In East Asian societies, this period is also marked by high pressure around college entrance exams. However, little is known about how young people's sleep changes over time, or how it is impacted by social institutions in the cultural context. This study fills this gap in the literature by examining sleep trajectories from adolescence to emerging adulthood using a population-based, longitudinal sample from Taiwan. Methods: Multilevel models were applied to longitudinal data from the Taiwan Youth Project (N = 1,489) to estimate sleep trajectories from age 14 to 22 for total time in bed, bedtime, and wakeup time by gender and by educational pathway, controlling for family background. Results: Analysis revealed that Taiwanese youth sleep less as adolescents than as emerging adults. Gender differences exist in adolescents' sleep trajectories but narrow after age 18. Differences in weekday and weekend time in bed vary by gender and change as individuals emerge into adulthood. Finally, college attendees and high school only attendees display differences in sleep that begin in high school and continue through college. Conclusions: The findings provide evidence of developmental changes in sleep from adolescence to emerging adulthood and demonstrate that sleep trajectories are gendered and socially patterned.The study is also one of the first to examine the sleep trajectories of East Asian youth and, as such, sheds light on the role of educational and cultural context as an influential factor.Sleep is crucial for health and everyday functioning. Scientists agree that getting enough sleep helps keep individuals healthy by lowering the risk of many physical and mental health problems (Cappuccio et al., 2010;Itani et al., 2017;Knutson et al., 2009). Even during adolescence and young adulthood when most people are relatively healthy, adequate sleep contributes significantly to subjective well-being, academic and job performance, and daily social functioning (Chen & Chen, 2019;Roberts et al., 2009;Steptoe et al., 2006). Given sleep's importance, it is imperative to understand how sleep is developmentally patterned during the period from adolescence to emerging adulthood and how individuals' sleep trajectories vary across societies. BackgroundExtant evidence of sleep patterns during adolescence and emerging adulthood is sparse. Many studies focus on adolescence only,

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“…As the primary reason for insufficient sleep is a naturally occurring propensity to stay up later in the evening [1, 2, 28] it seems plausible that bright light treatment (BLT) at the appropriate time may phase advance biological clocks and potentially reverse this problem [29, 30]. Hence, we sought to test the hypothesis that consistent morning use of an LED BLT device (LiteBook Edge™) by healthy adolescents would shift the phase of their sleep wake cycle and enable them to receive an increased amount of sleep during the school week and perform better on tests of attention and academic performance and evidence signs of improved alertness.…”

Section: Introductionmentioning

confidence: 99%

Bright light therapy and early morning attention, mathematical performance, electroencephalography and brain connectivity in adolescents with morning sleepiness

Teicher

Bolger

García

et al. 2022

Preprint

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Adolescents typically sleep too little and feel drowsy during morning classes. We assessed whether early morning use of an LED bright light device could increase alertness in school students. Twenty-six (8M/18F) healthy, unmedicated participants, ages 13-18 years, (mean 17.1±1.4) were recruited following screenings to exclude psychopathology. Baseline assessments were made of actigraph-assessed sleep, attention, math solving ability, electroencephalography and structural and functional MRI (N=10-11, pre-post). Participants nonrandomly received 3-4 weeks of bright light therapy (LiteBook Edge™) for 30 minutes each morning and used blue light blocking glasses for 2 hours before bedtime. LiteBooks™ were modified to surreptitiously record degree of use so that the hypothesis tested was whether there was a significant relationship between degree of use and outcome. LiteBooks™ were used 57±18% (range 23%–90%) of recommended time. There was a significant association between degree of use and: (1) increased beta spectral power in frontal EEG leads (primary measure); (2) greater post-test improvement in math performance and reduction in errors of omission on attention test; (3) earlier rise times on non-school days and reduced day-to-day variability in rise times; (4) increased dentate gyrus volume and (5) enhanced frontal connectivity with temporal, occipital and cerebellar regions during Go/No-Go task performance. Degree of bright light therapy use was associated with improvement in sleep cycle consistency, arousal, attention and functional connectivity, but not sleep onset or duration (primary measures). Although this was an open study, it suggests that use of bright morning light and blue light blocking glasses before bed may benefit adolescents experiencing daytime sleepiness.

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Sleep duration trajectories from adolescence to emerging adulthood: Findings from a population‐based birth cohort

Cited by 7 publications

References 43 publications

Twenty-four-hour movement guidelines during adolescence and its association with obesity at adulthood: results from a nationally representative study

Twenty-four-hour movement guidelines during adolescence and its association with obesity at adulthood: results from a nationally representative study

Sleep trajectories from early adolescence to emerging adulthood: Evidence from a nine‐year population‐based study

Bright light therapy and early morning attention, mathematical performance, electroencephalography and brain connectivity in adolescents with morning sleepiness

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