Relationship Between Sedentary Time and Sleep Duration Among Korean Adolescents

2019 ◽  
Vol 36 (6) ◽  
pp. 423-429
Author(s):  
Heeseung Choi ◽  
Chanhee Kim ◽  
Heesung Ko ◽  
Chang Gi Park
Keyword(s):  
Sleep Duration ◽  
Sedentary Time ◽  
Estimating Equation ◽  
Physical And Mental Health ◽  
Korean Adolescents ◽  
School Based ◽  
Equation Analysis ◽  
Sleep Logs ◽  
Objectively Measured ◽  
Ecological Momentary

Longer sedentary time and insufficient sleep are common and potentially serious problems among adolescents and have substantially adverse effects on their physical and mental health. In this school-based study, we conducted an ecological momentary assessment using actigraphy to examine the within-subject association between sedentary time and sleep duration among 80 Korean adolescents aged 12–17. Objectively measured sedentary time and sleep duration were recorded over 5 days; participants also completed a self-reported questionnaire and sleep logs. Using a generalized estimating equation, analysis revealed that daily sedentary time was significantly and negatively associated with sleep duration (β = −.36, p = .028). Additionally, the interaction between age and sedentary time significantly affected sleep duration (β = .03, p = .012). These findings suggest the need for school-based interventions that aim to reduce sedentary time and thereby improve sleep duration, helping adolescents, especially younger ones, to achieve a healthier lifestyle.

scholarly journals Contributors to and Consequences of Poor Sleep in Older Adults: Biopsychosocial Perspectives

2020 ◽  
Vol 4 (Supplement_1) ◽  
pp. 578-578
Author(s):  
Adam Spira ◽  
Katie Stone
Keyword(s):  
Older Adults ◽  
Sleep Problems ◽  
Later Life ◽  
Poor Sleep ◽  
Physical And Mental Health ◽  
Older Parents ◽  
Use Patterns ◽  
Health Related ◽  
Objectively Measured ◽  
Ecological Momentary

Abstract Sleep is a significant contributor to health and wellbeing across the lifespan, especially in later life. Poor sleep is common among older adults and can be both a risk factor for and consequence of numerous physical and mental health-related outcomes. In this symposium, we will present novel results from four studies that will advance understanding of the biological, psychological, and social factors that may contribute to or result from poor sleep in older adults. Specifically, Study 1 will present findings tying objectively measured sleep to performance on cognitive tasks administered using ecological momentary assessment (EMA) in the day-to-day lives of older adults with or without mild cognitive impairment (MCI). Study 2 will examine associations of personality dimensions and facets with insomnia symptoms in well-functioning older adults. Study 3 will examine psychological pathways linking parent-child relationships to subjective and objective sleep characteristics among older parents. Finally, study 4 will examine use patterns of cannabis for the treatment of sleep problems in older adults, and the ways in which this might differ from patients using cannabis for other reasons (e.g., pain). Together, this symposium will highlight novel links of an array of factors with sleep health in the aging population and their implications for prevention. Sleep, Circadian Rhythms and Aging Interest Group Sponsored Symposium.

642 A School-Based Health and Mindfulness Curriculum Improves Children’s Objectively Measured Sleep

SLEEP ◽  
2021 ◽  
Vol 44 (Supplement_2) ◽  
pp. A251-A252
Author(s):  
Christina Chick ◽  
Lauren Anker ◽  
Anisha Singh ◽  
Casey Buck ◽  
Makoto Kawai ◽  
...  
Keyword(s):  
School District ◽  
Physical Education ◽  
Low Socioeconomic Status ◽  
Rem Sleep ◽  
Social Stress ◽  
Management Skills ◽  
Physical And Mental Health ◽  
Breathing Exercises ◽  
School Based ◽  
Objectively Measured

Abstract Introduction Children of low socioeconomic status (SES) experience shorter sleep duration and poorer sleep quality, as well as more daytime sleepiness, compared to children of higher SES. Early interventions teaching skills for managing stress may mitigate the effects of SES-associated stress on trajectories of physical and mental health. We examined effects of a school-based health and mindfulness curriculum, teaching stress management skills such as paced breathing, on sleep and stress in school-aged children. We hypothesized curriculum exposure would improve children’s ability to manage stress, and that this would improve objectively measured sleep (i.e., increase duration of total and REM sleep). Methods Using a prospective observational cohort design, we recruited 115 children (49 girls, ages eight to 11) from two Northern California school districts. Of these, 58 children attended a school district that delivered a health and mindfulness curriculum twice weekly during their physical education time. 57 children attended an SES-matched school district that delivered a traditional physical education curriculum. Ambulatory polysomnography and perceived social stress were measured at baseline (before curriculum exposure) and at one- and two-year follow-ups. Results Children receiving the curriculum gained an average of 74 minutes of total sleep and 24 minutes of rapid eye movement (REM) sleep per night during the two-year study period. Children not receiving the curriculum experienced a decrease in total sleep of 64 minutes per night, with no changes in REM sleep. Sleep improved within the first three months of curriculum exposure. Children who reported higher curriculum engagement (e.g., using the breathing exercises at home) experienced larger changes in sleep architecture and perceived social stress. Social stress did not mediate effects of the curriculum on sleep. Conclusion We conducted the first study to examine effects of a school-based health and mindfulness curriculum on children’s objectively measured sleep. Children from a low-SES community who received the curriculum experienced increased total and REM sleep, compared to an SES-matched cohort not receiving the curriculum. Mindfulness training may have increased awareness of stress, while developing tools to reduce stress vulnerability. These results warrant additional investigation to assess whether benefits persist after curriculum cessation and/or generalize to other populations. Support (if any):

scholarly journals Body composition impact on sleep in young adults: The mediating role of sedentariness, physical activity, and diet

2020 ◽  
Author(s):  
Almudena Carneiro-Barrera ◽  
Francisco J. Amaro-Gahete ◽  
Francisco M. Acosta ◽  
Jonatan R. Ruiz
Keyword(s):  
Physical Activity ◽  
Body Composition ◽  
Sleep Duration ◽  
Sedentary Time ◽  
Sleep Time ◽  
Short Sleep Duration ◽  
Short Sleep ◽  
Mediating Role ◽  
Objectively Measured

Abstract Background Obesity and short sleep duration have both been related to endocrine and metabolic alterations, type II diabetes mellitus, life-threating cardiovascular diseases, and impaired daytime functioning and mood. However, the bidirectional relationship between these conditions and underlying mechanisms still remain unclear, especially in young adults. Objective This cross-sectional study therefore was aimed at elucidating the potential association of anthropometric and body composition parameters with objective and subjective sleep duration and quality in young sedentary adults, considering the potential mediating role of objectively-measured sedentariness, physical activity, and diet. Methods A total of 187 adults aged 18-25 (35.29% men) were included in the study. Body mass index (BMI) and waist-hip ratio were calculated through weight, height, waist and hip circumferences measures. Dual-energy X-ray absorptiometry scanner was used to assess body composition parameters such as lean mass index, fat mass index and visceral adipose tissue mass. Sedentary time, physical activity, and sleep duration and quality were objectively measured using accelerometry, sleep quality also being subjectively measured with the Pittsburgh Sleep Quality Index. Dietary intake was assessed by means of 24h recall questionnaires. Results BMI, waist-hip ratio and lean mass index were inversely associated to objectively-measured total sleep time and sleep efficiency (p < 0.05). Sedentary time moderated by sex explained the effects of BMI on total sleep time such that a high BMI was related to higher sedentariness in men which, in turn, was significantly associated with shorter sleep duration. Discussion Sedentary time is a link-risk factor mediating the adverse consequences of high BMI on short sleep duration in healthy young men. However, not until the complex association between body composition and sleep in young population is properly understood will it be possible to establish appropriate therapeutic goals addressing the early morbidity and mortality that obesity and short sleep duration certainly determine.

scholarly journals Bidirectional relationship between sleep and sedentary behavior in adults with overweight or obesity: A secondary analysis

2021 ◽  
Vol 2 (1) ◽  
Author(s):  
Christopher C Imes ◽  
Zhadyra Bizhanova ◽  
Christopher E Kline ◽  
Bonny Rockette-Wagner ◽  
Eileen R Chasens ◽  
...  
Keyword(s):  
Predominantly White ◽  
Sedentary Behavior ◽  
Sedentary Time ◽  
Sleep Onset ◽  
Secondary Analysis ◽  
Sleep Time ◽  
Bidirectional Relationship ◽  
Bidirectional Associations ◽  
Objectively Measured ◽  
Ecological Momentary

Abstract Study Objectives The relationships between daytime sedentary behavior and that night’s sleep and sleep and next day’s sedentary behavior are unknown. The purpose of this analysis was to examine these potentially bidirectional associations. Methods This study was a secondary analysis of baseline data from an ecological momentary assessment study to determine the triggers for dietary lapses during a weight loss intervention. Sedentary behavior, physical activity, and sleep were objectively measured using accelerometers. Linear mixed modeling was used to examine the bidirectional multivariate associations between activity and sleep characteristics for each outcome examined separately. The models included sex, age, body mass index (BMI), education, and day of the week (weekday vs. weekend). Results Participants were predominantly white (81.5%) and female (88.9%) with a mean age of 51.2 ± 10.6 years. Longer previous night’s total sleep time (TST) (b = −0.320, standard error [SE] = 0.060; p &lt; .001) and being a weekend (b = −63.845, SE = 9.406; p &lt; .001) were associated with less sedentary time the next day. More daytime sedentary time was associated with less wake after sleep onset (b = −0.018, SE = 0.008; p = .016), fewer awakenings (b = −0.010, SE = 0.004; p = .016), and less TST (b = −0.060, SE = 0.028; p = .029) that night. Conclusions The bidirectional relationships between sedentary time and sleep characteristics are complex and may vary depending on participant characteristics and duration of sedentary and sleep time. Interventions to decrease sedentary behavior may benefit by targeting sleep duration and weekday activity.

scholarly journals Associations between objectively measured physical activity, sedentary behaviour and time in bed among 75+ community-dwelling Danish older adults

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Li-Tang Tsai ◽  
Eleanor Boyle ◽  
Jan C. Brønd ◽  
Gry Kock ◽  
Mathias Skjødt ◽  
...  
Keyword(s):  
Physical Activity ◽  
Older Adults ◽  
Sedentary Behavior ◽  
Sedentary Behaviour ◽  
Sleep Duration ◽  
Activity Level ◽  
Time In Bed ◽  
Objectively Measured ◽  
Objectively Measured Physical Activity ◽  
Vector Magnitude

Abstract Background Older adults are recommended to sleep 7–8 h/day. Time in bed (TIB) differs from sleep duration and includes also the time of lying in bed without sleeping. Long TIB (≥9 h) are associated with self-reported sedentary behavior, but the association between objectively measured physical activity, sedentary behavior and TIB is unknown. Methods This study was based on cross-sectional analysis of the Healthy Ageing Network of Competence (HANC Study). Physical activity and sedentary behaviour were measured by a tri-axial accelerometer (ActiGraph) placed on the dominant wrist for 7 days. Sedentary behavior was classified as < 2303 counts per minute (cpm) in vector magnitude and physical activity intensities were categorized, as 2303–4999 and ≥ 5000 cpm in vector magnitude. TIB was recorded in self-reported diaries. Participants were categorized as UTIB (usually having TIB 7–9 h/night: ≥80% of measurement days), STIB (sometimes having TIB 7–9 h/night: 20–79% of measurement days), and RTIB (rarely having TIB 7–9 h/night: < 20% of measurement days). Multinominal regression models were used to calculate the relative risk ratios (RRR) of being RTIB and STIB by daily levels of physical activity and SB, with UTIB as the reference group. The models were adjusted for age, sex, average daily nap length and physical function. Results Three hundred and fourty-one older adults (median age 81 (IQR 5), 62% women) were included with median TIB of 8 h 21 min (1 h 10 min)/day, physical activity level of 2054 (864) CPM with 64 (15) % of waking hours in sedentary behavior. Those with average CPM within the highest tertile had a lower RRR (0.33 (0.15–0.71), p = 0.005) for being RTIB compared to those within the lowest tertile of average CPM. Accumulating physical activity in intensities 2303–4999 and ≥ 5000 cpm/day did not affect the RRR of being RTIB. RRR of being RTIB among highly sedentary participants (≥10 h/day of sedentary behavior) more than tripled compared to those who were less sedentary (3.21 (1.50–6.88), p = 0.003). Conclusions For older adults, being physically active and less sedentary was associated with being in bed for 7–9 h/night for most nights (≥80%). Future longitudinal studies are warranted to explore the causal relationship sbetween physical activity and sleep duration.

scholarly journals Physical Activity, Screen Time, and Sleep Duration of Children Aged 6–9 Years in 25 Countries: An Analysis within the WHO European Childhood Obesity Surveillance Initiative (COSI) 2015–2017

Obesity Facts ◽  
2020 ◽  
pp. 1-13
Author(s):  
Stephen Whiting ◽  
Marta Buoncristiano ◽  
Peter Gelius ◽  
Karim Abu-Omar ◽  
Mary Pattison ◽  
...  
Keyword(s):  
Physical Activity ◽  
Childhood Obesity ◽  
Sleep Duration ◽  
Screen Time ◽  
School Administrators ◽  
Well Being ◽  
Pooled Analysis ◽  
Physical And Mental Health ◽  
Short Sleep Duration ◽  
Nationally Representative

<b><i>Background:</i></b> Children are becoming less physically active as opportunities for safe active play, recreational activities, and active transport decrease. At the same time, sedentary screen-based activities both during school and leisure time are increasing. <b><i>Objectives:</i></b> This study aimed to evaluate physical activity (PA), screen time, and sleep duration of girls and boys aged 6–9 years in Europe using data from the WHO European Childhood Obesity Surveillance Initiative (COSI). <b><i>Method:</i></b> The fourth COSI data collection round was conducted in 2015–2017, using a standardized protocol that included a family form completed by parents with specific questions about their children’s PA, screen time, and sleep duration. <b><i>Results:</i></b> Nationally representative data from 25 countries was included and information on the PA behaviour, screen time, and sleep duration of 150,651 children was analysed. Pooled analysis showed that: 79.4% were actively playing for &#x3e;1 h each day, 53.9% were not members of a sport or dancing club, 50.0% walked or cycled to school each day, 60.2% engaged in screen time for &#x3c;2 h/day, and 84.9% slept for 9–11 h/night. Country-specific analyses of these behaviours showed pronounced differences, with national prevalences in the range of 61.7–98.3% actively playing for &#x3e;1 h/day, 8.2–85.6% were not members of a sport or dancing club, 17.7–94.0% walked or cycled to school each day, 32.3–80.0% engaged in screen time for &#x3c;2 h/day, and 50.0–95.8% slept for 9–11 h/night. <b><i>Conclusions:</i></b> The prevalence of engagement in PA and the achievement of healthy screen time and sleep duration are heterogenous across the region. Policymakers and other stakeholders, including school administrators and parents, should increase opportunities for young people to participate in daily PA as well as explore solutions to address excessive screen time and short sleep duration to improve the overall physical and mental health and well-being of children.

scholarly journals Impact of the Coronavirus Lockdown on Older Adolescents Engaged in a School-Based Stress Management Program: Changes in Mental Health, Sleep, Social Support, and Routines

2021 ◽  
Author(s):  
Sara Schjølberg Marques ◽  
Ruth Braidwood
Keyword(s):  
Mental Health ◽  
Social Support ◽  
Stress Management ◽  
Behavioral Therapy ◽  
Management Program ◽  
Return To School ◽  
Physical And Mental Health ◽  
School Based ◽  
Older Adolescents ◽  
Stress Management Program

Abstract The mental health effects of the coronavirus pandemic are likely to be significant and sustained, especially for those who experience adversity or preexisting mental health difficulties. This article examines the experiences of older adolescents during the United Kingdom government’s “lockdown” period (April 2020 to June 2020) on mental health, social support, sleep, and routines using both quantitative and qualitative methods. Participants were enrolled in DISCOVER, a school-based stress management program, in London (N = 107; 72 percent Black, Asian, or minority ethnicity). The Coping with COVID-19 questionnaire was developed and administered online. Changes in mental health, sleep, and routines were reported during the lockdown period as well as increased worry about family members’ physical and mental health. Positive experiences of the lockdown period included improvements in quality of relationships and increased time to spend on hobbies. Participants reported the use of cognitive–behavioral therapy techniques for coping. Results have implications for supporting older adolescents during the pandemic, including on their return to school.

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