Short Sleep Duration and Extremely Delayed Chronotypes in Uruguayan Youth: The Role of School Start Times and Social Constraints

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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Sleep habits and factors associated with short sleep duration among Japanese high-school students: A community study

Sleep and Biological Rhythms ◽

10.1111/j.1479-8425.2003.00079.x ◽

2004 ◽

Vol 2 (1) ◽

pp. 57-64 ◽

Cited By ~ 42

Author(s):

Hirokuni TAGAYA ◽

Makoto UCHIYAMA ◽

Takashi OHIDA ◽

Yuichi KAMEI ◽

Kayo SHIBUI ◽

...

Keyword(s):

High School ◽

High School Students ◽

Sleep Duration ◽

Community Study ◽

Sleep Habits ◽

School Students ◽

Short Sleep Duration ◽

Short Sleep ◽

Factors Associated

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Associations between pain, self-efficacy, sleep duration, and symptoms of depression in adolescents: a cross-sectional survey

BMC Public Health ◽

10.1186/s12889-021-11680-1 ◽

2021 ◽

Vol 21 (1) ◽

Author(s):

Kristin Haraldstad ◽

Tonje Holte Stea

Keyword(s):

High School Students ◽

Sleep Duration ◽

Self Efficacy ◽

Cross Sectional Survey ◽

School Students ◽

Short Sleep Duration ◽

Cross Sectional ◽

Short Sleep ◽

Symptoms Of Depression ◽

Daily Pain

Abstract Background Although pain has been identified as an important public health problem among adolescents, few studies have investigated possible protective and risk factors for pain. The main aim of the present study was to investigate associations between prevalence of daily pain, self-efficacy, sleep duration, and symptoms of depression in a representative sample of Norwegian adolescents. Methods A comprehensive cross-sectional survey was completed by 12,867 junior high school students and high school students (response rate: 90%) aged 14–19 years. Logistic regression models were adjusted for age, gender, and parental educational level. Results We found a high prevalence of daily pain among adolescents, especially among girls (19%) compared with boys (7%). Short sleep duration was associated with increased odds ratios (ORs) of pain in the shoulders/neck (OR 1.3; 95% CI 1.3–2.0) and stomach (1.7; 1.2–2.4). Symptoms of depression were associated with increased ORs for all measured types of daily pain, including head (3.7; 3.0–4.6), shoulders/neck (3.9; 3.1–4.8), joints/muscles (4.3; 3.3–5.6), and stomach (5.5; 4.1–7.4). By contrast, self-efficacy was not associated with any form of daily pain. Conclusion Given the burden of pain, high incidence of pain problems, and strong association between pain and depression and, to some degree, short sleep duration, co-occurring symptoms may be an important area for research in the public health field. The results highlight the importance of early identification and prevention. Longitudinal studies are needed to understand better pain problems and their underlying mechanisms with the aim of developing targeted interventions.

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Comparison of risk-behaviors among young people who are not in education, employment or training (NEET) versus high school students. A cross-sectional study

Norsk Epidemiologi ◽

10.5324/nje.v28i1-2.3049 ◽

2019 ◽

Vol 28 (1-2) ◽

Author(s):

Tonje H. Stea ◽

Karin De Ridder ◽

Siri Håvås Haugland

Keyword(s):

High School ◽

High School Students ◽

Risk Behaviors ◽

Sleep Duration ◽

Leisure Time Physical Activity ◽

Cross Sectional Study ◽

School Students ◽

Short Sleep Duration ◽

Cross Sectional ◽

Short Sleep

Background: Young people who are not in education, employment or training (NEET) have been identified as a vulnerable group at risk of poor social functioning, lower educational achievement, limited job opportunities and financial hardship. Being NEET has also been associated with increased risk of mental and physical health problems, but only a few studies have identified the prevalence of certain health-risk behaviors among NEET youth. The present study contributes to fill the existing knowledge gaps by investigating a broad range of risk behaviors in this vulnerable group compared to their high school peers.Methods: This cross-sectional study included 96 NEET youth and 384 age and gender-matched high school students. A self-report questionnaire was used to assess differences in several risk behaviors, including substance use, low consumption of healthy food and high consumption of unhealthy food and beverages, low leisure time physical activity and low sleep duration. Logistic regression models were adjusted for gender, age and parental education.Results: NEET youth had higher odds of using cannabis (OR 2.2; 95% CI 1.1-4.3), smokeless tobacco (1.7;1.0-2.8), smoking cigarettes (2.6;1.5-4.4), having an irregular consumption of breakfast (2.6;1.5-4.5), lunch (3.1;1.8-5.4) and dinner (1.9;1.1-3.2), having low consumption of vegetables (3.0;1.3-6.7), fruit and berries (5.3;1.6-18.1) and fish (3.0;1.8-5.1) and short sleep duration on weekends (2.6;1.4-4.9) than students. On the other hand, being NEET was associated with decreased odds of short sleep duration on weekdays compared to their high school peers (0.3;0.2-0.5). No differences in alcohol intoxication, consumption frequency of evening meals, consumption of unhealthy food items and beverages and leisure time physical activity were shown between these groups.Conclusions: NEET youth have higher odds of using tobacco, short sleep duration on weekends and lower consumption of healthy food items including vegetables, fruit and fish compared to high school students. These results contribute to identify risk behaviors that are more prevalent among NEET youth compared to students and needs to be addressed through targeted intervention studies.

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Association between short sleep duration and overweight/obesity among middle-school students: a cross-sectional study in Fuzhou, China

10.21203/rs.3.rs-30129/v4 ◽

2021 ◽

Author(s):

Guobo Li ◽

Shichao Wei ◽

Fuhao Zheng ◽

Xingyan Xu ◽

Yingying Cai ◽

...

Keyword(s):

Middle School ◽

High School Students ◽

Sleep Duration ◽

Overweight And Obesity ◽

The Body ◽

School Students ◽

Short Sleep Duration ◽

Related Factors ◽

Short Sleep ◽

Overweight Or Obesity

Abstract Background: This study was designed to investigate the prevalence of short sleep duration and its association with overweight or obesity in adolescents from middle school in Fuzhou, China.Methods: A total of 13,063 students (male: 6,500; female: 6,553) from 18 different schools in Fuzhou city were included in this study. Questionnaires focusing on short sleep duration and overweight or obesity related factors were collected. The sleep duration was self-reported by the subjects. The body weight and height were measured by the qualified personnel. Logistic regression analysis was used to evaluate the effects of short sleep duration on overweight or obesity in school students.Results: The overall rates of overweight and obesity were 12.1% and 7.1%, respectively. The prevalence of short sleep duration among students was 82.8%. The majority of high school students (92.5%) showed a short sleep duration. Compared with male children with a sleep duration of 8-10 h per day, the odds ratios (ORs) of overweight/obesity for those with a sleep duration of less than 6 h or 6-8 h per day were 1.60 (1.22-2.09) and 1.07 (0.90-1.29) after adjusting social and demographic status, mental health and lifestyle factors. The homologous ORs of female children were 1.45 (1.04-2.04) and 1.11(0.85-1.45), respectively.Conclusions: A large number of adolescents suffered from short sleep duration. Short sleep duration is associated with a higher OR of overweight/obesity in middle-school children, especially in the male adolescences.

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SCHOOL START TIME CHANGE, SLEEP DURATION, AND DRIVING ACCIDENTS IN HIGH SCHOOL STUDENTS

CHEST Journal ◽

10.1016/j.chest.2019.02.294 ◽

2019 ◽

Vol 155 (4) ◽

pp. 303A ◽

Cited By ~ 1

Author(s):

S. Bin-Hasan ◽

K. Rakesh ◽

K. Kapur ◽

J. Owens

Keyword(s):

High School ◽

High School Students ◽

Sleep Duration ◽

Time Change ◽

School Students ◽

Start Time

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The Relationship of School Start Times, Sleep Duration and Mental Health among a Representative Sample of High School Students in Colorado, 2019

International Journal of Environmental Research and Public Health ◽

10.3390/ijerph18115708 ◽

2021 ◽

Vol 18 (11) ◽

pp. 5708

Author(s):

Lucas M. Neuroth ◽

Ming Ma ◽

Ashley Brooks-Russell ◽

Motao Zhu

Keyword(s):

Mental Health ◽

High School ◽

High School Students ◽

Sleep Duration ◽

School Students ◽

Start Time ◽

Early Start ◽

Student Mental Health ◽

School Start Times ◽

Late Start

This cross-sectional study utilized responses from 46,537 students enrolled in grades 9 through 12 in 166 high schools across the state of Colorado via the 2019 Healthy Kids Colorado Survey to: (1) quantify the association between high school start times and student sleep duration and (2) investigate the associations between school start times and student mental health. Descriptive and bivariate analyses were used to investigate associations between school start times and self-reported demographic, sleep, and mental health factors. Survey-weighted multivariate regression modeling was used to investigate associations between school start times, sleep duration, and mental health. Schools with late start times (≥8:30 a.m.) saw 32.2% (95% Confidence Interval: 29.5–35.0) of students sleeping 8 h or more relative to 23.2% (22.0–24.4) in schools with very early start times (<8:00 a.m.). For every 15 min later school start time, students’ sleep duration was 4.6 (3.4–5.9) min longer. Students attending schools with very early start times had 1.10 (0.95–1.27) times the odds of attempting suicide compared to those attending schools with later start times, while students at schools with early starts (8:00–8:29 a.m.) were associated with 1.11 (0.98–1.27) times the odds. Schools with later school start times had a statistically significantly higher proportion of students sleeping 8+ hours. Schools with start times before 8:30 a.m. had 10–11% higher odds of students attempting suicide compared to schools with late start times, though these differences were not statistically significant. Student mental health should continue to be investigated when assessing the potential impacts of delayed school start times.

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Overweight/obesity in students associated with short sleep duration which can be improved by nanocapsules

Materials Express ◽

10.1166/mex.2021.1967 ◽

2021 ◽

Vol 11 (5) ◽

pp. 699-705

Author(s):

Guobo Li ◽

Fuhao Zheng ◽

Xingyan Xu ◽

Yingying Cai ◽

Shichao Wei ◽

...

Keyword(s):

High School Students ◽

Sleep Duration ◽

Overweight And Obesity ◽

The Body ◽

Odds Ratios ◽

School Students ◽

Short Sleep Duration ◽

Related Factors ◽

Short Sleep ◽

Qualified Personnel

This study was designed to investigate the prevalence of short sleep duration in adolescents from middle school in Fuzhou, China and explore the association between short sleep duration and overweight/obesity. Nano-encapsulated vitamin D3 can improve sleep deprivation, thus reducing the prevalence of overweight and obesity. A total of 13063 students (male: 6,500; female: 6,553) from 18 schools were investigated in the study. Questionnaires focusing on short sleep duration and overweight or obesity related factors were collected. The subjects reported their own sleep duration. The body weight and height of each subject were measured by the qualified personnel. Logistic regression analysis was used to evaluate the effects of short sleep duration on overweight/obesity in school students. The rates of overweight and obesity were 12.1% and 7.1%, respectively. The prevalence of short sleep duration among teenagers was 82.8%. The majority of high school students (92.5%) suffered from short sleep duration. Compared with male children with a sleep duration of 8-10 h per day, the odds ratios (95% Cl) of overweight/obesity for those with a sleep duration of less than 6 h or 6-8 h, were 1.63 (1.25-2.13) and 1.06 (0.88-1.27), respectively, after adjusting social and demographic status, mental health and lifestyle factors, while for female children, the odds ratios were 1.38 (0.99-1.93) and 1.04 (0.79-1.35), respectively. A large number of adolescents suffered from short sleep duration. Short sleep duration is associated with higher odds of overweight/obesity in male children.

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Association between short sleep duration and overweight/obesity among middle-school students: a cross-sectional study in Fuzhou, China

10.21203/rs.3.rs-30129/v3 ◽

2020 ◽

Author(s):

Guobo Li ◽

Shichao Wei ◽

Fuhao Zheng ◽

Xingyan Xu ◽

Yingying Cai ◽

...

Keyword(s):

Middle School ◽

High School Students ◽

Sleep Duration ◽

Overweight And Obesity ◽

The Body ◽

Odds Ratios ◽

School Students ◽

Short Sleep Duration ◽

Short Sleep ◽

Overweight Or Obesity

Abstract Background: This study was designed to investigate the prevalence of short sleep duration and explore the association between short sleep duration and overweight or obesity in adolescents from middle school in Fuzhou, China.Methods: A total of 13,063 students (male: 6,500; female: 6,553) from 18 different schools were included in our study. Questionnaires focusing on short sleep duration and overweight or obesity related factors were collected. The sleep duration was self-reported by the subjects. The body weight and height of each subject were measured by the qualified personnel. Logistic regression analysis was used to evaluate the effects of short sleep duration on overweight or obesity in school students.Results: The overall rates of overweight and obesity were 12.1% and 7.1%, respectively. The prevalence of short sleep duration among students was 82.8%. The majority of high school students (92.5%) suffered from short sleep duration. Compared with male children with a sleep duration of 8-10 h day, the odds ratios (95% CI) of overweight/obesity for those with a sleep duration of less than 6 h or 6-8 h, were 1.63 (1.25-2.13) and 1.06 (0.88-1.27)，after adjusting social and demographic status, mental health and lifestyle factors. The homologous odds ratios of female children were 1.38 (0.99-1.93) and 1.04 (0.79-1.35), respectively.Conclusions: A large number of adolescents suffered from short sleep duration. Short sleep duration is associated with higher odds of overweight/obesity in male children.

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Association between Short Sleep Duration and Overweight/Obesity among middle-school students: a cross-sectional study in Fuzhou, China

10.21203/rs.3.rs-30129/v2 ◽

2020 ◽

Author(s):

Guobo Li ◽

Shichao Wei ◽

Fuhao Zheng ◽

Xingyan Xu ◽

Yingying Cai ◽

...

Keyword(s):

Middle School ◽

High School Students ◽

Sleep Duration ◽

Overweight And Obesity ◽

The Body ◽

Odds Ratios ◽

School Students ◽

Short Sleep Duration ◽

Short Sleep ◽

Overweight Or Obesity

Abstract Background: This study was designed to investigate the prevalence of short sleep duration and explore the association between short sleep duration and overweight or obesity in adolescents from middle school in Fuzhou, China. Methods: Questionaires focusing on short sleep duration and overweight or obesity related factors were collected. The sleep duration was self-reported by the subjects. The body weight and height of each subject were measured by the qualified personnel. Logistic regression analysis was used to evaluate the effects of short sleep duration on overweight or obesity in school students. Results: The overall rates of overweight and obesity were 12.1% and 7.1%, respectively. The prevalence of short sleep duration among students was 82.8%. The majority of high school students (92.5%) suffered from short sleep duration. Compared with male children with a sleep duration of over 8 hrs a day, the odds ratios (95% CI) of overweight/obesity for those with a sleep duration of less than 6 h or 6 - 8 h, were 1.63 (1.25-2.13) and 1.06 (0.88-1.27). After adjusting social and demographic status, mental health and lifestyle factors, the odds ratios of female children were 1.38(0.99-1.93) and 1.04 (0.79-1.35), respectively. Conclusions: A large number of adolescents suffered from short sleep duration. Short sleep duration was negatively correlated with overweight/obesity among male children.

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Associations between pain, self-efficacy, sleep duration, and symptoms of depression in adolescents: a cross-sectional survey

10.21203/rs.3.rs-274937/v1 ◽

2021 ◽

Author(s):

Kristin Haraldstad ◽

Tonje Holte Stea

Keyword(s):

High School Students ◽

Sleep Duration ◽

Self Efficacy ◽

Cross Sectional Survey ◽

School Students ◽

Short Sleep Duration ◽

Cross Sectional ◽

Short Sleep ◽

Symptoms Of Depression ◽

Daily Pain

Abstract Background: Although pain has been identified as an important public health problem among adolescents, few studies have investigated possible protective and risk factors for pain. The main aim of the present study was to investigate associations between prevalence of daily pain, self-efficacy, sleep duration, and symptoms of depression in a representative sample of Norwegian adolescents. Methods: A comprehensive cross-sectional survey was completed by 12 867 junior high school students and high school students (response rate: 90%) aged 14–19 years. Logistic regression models were adjusted for age, gender, and parental educational level. Results: We found a high prevalence of daily pain among adolescents, especially among girls (19%) compared with boys (7%). Short sleep duration was associated with increased odds ratios (ORs) of pain in the shoulders/neck (OR 1.3; 95% CI 1.3–2.0) and stomach (1.7; 1.2–2.4). Symptoms of depression were associated with increased ORs for all measured types of daily pain, including head (3.7; 3.0–4.6), shoulders/neck (3.9; 3.1–4.8), joints/muscles (4.3; 3.3–5.6), and stomach (5.5; 4.1–7.4). By contrast, self-efficacy was not associated with any form of daily pain. Conclusion: Given the burden of pain, high incidence of pain problems, and strong association between pain and depression and, to some degree, short sleep duration, co-occurring symptoms may be an important area for research in the public health field. The results highlight the importance of early identification and prevention. Longitudinal studies are needed to understand better pain problems and their underlying mechanisms with the aim of developing targeted interventions.

Download Full-text