Sleep Duration In Adolescents Research Articles

Incidence of obesity in students at alauddin state islamic university makassar : A Cross Sectional Study

Obesity is a condition in people who are overweight because fat accumulates in the body. Obesity is a multifactorial disease and the increase in obesity is often associated with the habit of consuming more food than needed and the number of calories burned. Based on WHO data, the prevalence of global obesity has almost tripled between 1975 and 2020. This is corroborated by data from the 2018 Basic Health Study (RISKESDAS), which experienced an increase in obesity data from 2013 to 2018. The purpose of this study was to determine the relationship between sedentary behavior and physical activity. , eating patterns and sleep duration of adolescents with the incidence of obesity. This type of research is a quantitative research with an analytic observational approach with a cross sectional study design method. Class of 2021 students at Alauddin Makassar State Islamic University, totaling 156 people, were used as research samples. The sampling technique in this study used accidental sampling. The results of this study indicated that based on the results of the bivariate test it was found that sedentary behavior had a p value of 0.000; physical activity 0.003; diet 0.000; sleep duration 0.000 indicates that there is a relationship between sedentary behavior, physical activity, eating patterns and sleep duration on the incidence of obesity. The conclusion of this study is sedentary behavior, physical activity, eating patterns and sleep duration are factors that influence the incidence of obesity in adolescents at Alauddin State Islamic University Makassar.

The Relationship Between Sleep Duration and Obesity in Children and Adolescents in Asia: A Meta-Analysis

In recent years, short sleep duration has been proposed and received attention as a modifiable factor of obesity. Observational studies on the relationship between sleep duration and obesity in children and adolescents in the Asian region have been carried out. This study aims to determine the relationship between short sleep duration and obesity in children and adolescents in Asia. This study used a meta-analysis method. Search for articles using the Pubmed, Proquest, Science direct and Google Scholar databases. Article search is limited to research in English, publications from 2000 to 2020 and free full text articles. Data is processed using the Revman 5.3 application. There were 12 research articles that were systematically reviewed from 1,281 identified articles. Ten of these articles were included in the meta-analysis. The results of the study proved that there was a significant relationship between short sleep duration and obesity in children and adolescents with a pooled OR of 1.15 (95% CI: 1.04-1.28), and an analysis of the age subgroup also showed the same results as the pooled OR. 1.17 (95% CI: 1.02-1.35) in the age group before 3-4 years and combined OR 1.29 (95% CI: 1.14-1.48) in children aged 6-12 years. Avoiding short sleep duration can be considered as one way to reduce the risk of obesity in children and adolescents.

Objective and subjective sleep health in adolescence: Associations with puberty and affect.

Sleep health tends to worsen during adolescence, partially due to pubertal-related changes that, in combination with social and psychological factors, can lead to long-lasting impairments in sleep health and affective functioning. Discrepant findings between subjective and objective measures of sleep in relation to affect have been reported in studies of adults; however, few investigations have assessed both subjective and objective sleep quality in a single sample, and fewer have examined this in the context of pubertal development. We aimed to (1) characterise pubertal associations with subjective sleep satisfaction, objective sleep efficiency, and objective and subjective sleep duration in adolescents; (2) examine the longitudinal association between daily affect and sleep metrics; and (3) test whether pubertal stage moderated this association. Eighty-nine participants (64% female, ages 13-20) completed an ecological momentary assessment (EMA) and actigraphy protocol. Independent of age, advanced pubertal stage was associated with lower subjective sleep satisfaction but not with objective sleep indices. Subjective sleep satisfaction was associated with within-person trajectories of negative affect, but not with positive affect. Pubertal stage and sleep satisfaction did not interact to predict within-day negative or positive affect. These findings are consistent with previous reports showing that objective and subjective sleep health are associated differently with puberty, and that subjective sleep health is associated with daily affect. Pubertal stage may be a more important indicator of subjective sleep quality in adolescence than is chronological age, most likely due to hormonal changes and psychological adjustment to the physical changes associated with the pubertal transition.

Associations between sleepiness, sleep duration, and academic outcomes in early adolescence

AbstractInsufficient sleep and sleepiness are common in adolescence and can negatively impact school performance. The current study examined sleep duration and sleepiness in academic performance and cognitive processes in early adolescence. Middle school students (N = 288; Mage = 12.01; 54% female; 48% Black, 37% White, 10% Hispanic) wore activity watches for seven nights, reported on daytime sleepiness, and completed computerized tests of attention and episodic memory. Academic performance was assessed with parent and teacher reports, and math and English/language arts (ELA) grades. Results revealed unique associations between daytime sleepiness and academic outcomes, but not cognitive processes. Both shorter and longer sleep duration were related to fewer academic enablers and lower academic skills and math grades. Students with the highest levels of academic performance occurred near 8 h of sleep per night. These results support the importance of addressing daytime sleepiness and optimal sleep duration in early adolescents.

Sleep duration and depression among adolescents: Mediation effect of collective integration.

Adolescence is a time of dramatic physical and mental change when adolescents are extremely vulnerable to various mental health problems. Depression and poor sleep duration are increasingly common among adolescents. This study is mainly aimed to verify the important mediating role of collective integration on sleep duration and depression and examine the interrelationship between sleep duration and depression in adolescents longitudinally. The data were obtained from the Wave 1 (in 2013-2014) and Wave 2 (in 2014-2015) longitudinal surveys of China Education Panel Survey (CEPS). The analytic sample in the present study included 8,829 seventh-grade students aged about 14 years (51.50% boys and 48.50% girls). A structural equation modeling (SEM) was used to investigate parent-child/teacher factors affecting adolescent sleep duration and depression, and Monte Carlo resampling with R was employed to confirm the significance of the mediation effects of collective integration. An autoregressive cross-lagged model was employed to analyze the interrelationship between adolescent sleep duration and depression. The findings were as follows. Firstly, collective integration strongly mediated the relationships among academic self-efficacy, parental involvement, teacher praise/criticism, sleep duration, and depression. Secondly, sleep duration and depression were found to have enduring effects and have effects on each other. Thirdly, parental involvement and teacher praise were positively associated with sleep quality and negatively associated with depression. Teacher criticism was negatively associated with sleep quality and positively associated with depression. Compared with teacher praise, teacher criticism has stronger effects on youth sleep duration and depression. In conclusion, improving sleep problems and depression in adolescents as early as possible can stop the persistent and long-term consequences of these problems. Increasing teacher praise, decreasing teacher criticism, and increasing adolescents' collective integration were effective ways to improve adolescents' sleep duration and mediate depression.

Middle childhood and adolescence sleep duration and behavior problems in adolescence.

We examined the associations of middle childhood and adolescence nighttime sleep duration with adolescence internalizing and externalizing behavior problems per the Youth Self-Report (YSR) and the Child Behavior Checklist (CBCL) questionnaires, in a cohort of 889 Colombian schoolchildren. We estimated adjusted differences with 95% confidence intervals (CI) in mean behavior problem t-scores in standardized units between recommended sleep duration categories and as a continuous exposure using multiple linear regression and restricted cubic spline models, respectively. Compared with sleep duration within recommendations, middle childhood sleep above recommendations was related to 4.6 (95% CI: 1.6, 7.6; p = .004) and 5.4 (95% CI: 1.2, 9.7; p = .01) adjusted units higher YSR and CBCL externalizing problem scores, respectively. In continuous exposure analyses, this association seemed restricted to children aged ≥11 years. Longer sleep, both in categories and as a continuous exposure, was also associated with increased CBCL internalizing problems. Results did not differ by sex or weekend/weekday sleep. Sleeping under recommendations in middle childhood was not significantly related to behavior problems; nevertheless, shorter sleep in adolescence, in both categorical and continuous scales, was significantly related to behavior problems. In conclusion, behavior problems in adolescence are associated with longer sleep in middle childhood and shorter sleep in adolescence.

Adolescent sleep duration: associations with social-cognitive determinants and the mediating role of sleep hygiene practices.

Insufficient sleep duration among adolescents is a widespread public health problem. Gaining better insight into social-cognitive determinants associated with adolescent sleep duration is necessary for developing effective preventive interventions to support healthy sleep. This study aimed to explore whether social-cognitive determinants regarding sufficient sleep duration were associated with sleep duration, and if these associations were mediated by collective sleep hygiene practices. Furthermore, we examined these associations for social-cognitive determinants related to not using media before bedtime and doing relaxing activities and considered whether these associations were mediated by specific sleep hygiene practices. Data were collected amongst second- and third-grade adolescents from 10 Dutch high schools. A total of 878 adolescents (mean [SD] age 13.3[0.71]years) completed data on sleep duration, social-cognitive determinants of the Theory of Planned Behaviour (i.e., attitude, subjective norms from parents, subjective norms from peers, perceived behavioural control, intention), and sleep hygiene practices. Single- and multivariable path models were constructed and mediation by sleep hygiene practices was analysed by Monte Carlo simulation. All social-cognitive determinants except for subjective norms from peers were associated with longer sleep duration (p < 0.01). Sleep hygiene practices mediated all associations between social-cognitive determinants and sleep duration (mediation ranging from 16% to 72%). Although some of the significant associations and mediation disappeared in the multivariable model, behavioural arousal was the strongest mediator, but collective sleep hygiene practices and cognitive/emotional arousal also explained parts of the associations. The findings indicate that social-cognitive factors should not be overlooked when targeting adolescent sleep duration.

O019 The Association between Later Circadian Timing and Higher Depressive Symptoms in Early Adolescence is Ameliorated by Longer Sleep Duration

Abstract Background Circadian phase and sleep-wake timing delays are hallmark adolescent development features. These delays contribute to shorter sleep duration in combination with early school schedules. Both delayed circadian phase and insufficient sleep are associated with increased prevalence/severity of mood problems. This study examined associations between circadian phase, sleep duration, and mood in early adolescence. Methods 157 Year 7 Australian students (M±SD=12.81±0.40 years, 56.7% female) wore actiwatches and completed sleep diaries for two weeks in school term. Circadian phase was measured via salivary dim light melatonin onset (DLMO) on the final Friday of sleep monitoring. PROMIS Paediatric Depression and Anxiety measured depression/anxiety symptom severity. Sleep duration/efficiency were calculated using actigraphy and self-reports. Multiple linear regression quantified the relationships between sleep duration and efficiency and circadian phase and mood (depression/anxiety) associations, adjusting for sex. Results DLMO occurred at the expected time for early adolescents [continuous decimal time; M±SD=20.52±1.20; range:17.52-24.03]. Sleep duration (p=.03), but not sleep efficiency (p=.89), moderated associations between DLMO and depression (but not anxiety; p-values&amp;gt;.08). Simple slope analyses showed that in individuals with shorter average sleep duration, a one-hour circadian phase delay was associated with 1.84 t-score increase in depressive symptom severity (p=.03). These associations were non-significant in individuals with longer average sleep duration (p=.44). Conclusion Although delayed circadian phase is a developmental norm, its association with increased depressive symptom severity was ameliorated in young adolescents who obtained longer sleep duration. Addressing sleep duration, a modifiable protective factor (e.g., by delaying school start times), may yield mood-related benefits for adolescents.

Do objective data support the claim that problematic smartphone use has a clinically meaningful impact upon adolescent sleep duration?

ABSTRACT Sleep insufficiency is a risk factor for mental and physical ill-health. In recent years, research has attributed sleep insufficiency to problematic smartphone use (PSU). In addition, research has indicated a relationship between sleep and the construct of mental toughness (MT). However, previous research exploring the relationship between sleep, PSU and MT has relied on self-report measures. Therefore, this study aimed to explore the tentative links between sleep, PSU and MT by gathering objective data. 2053 participants completed measures of sleep quality, PSU and MT. Objective smartphone usage data were collected using pre-installed smartphone applications. A sub-sample of 614 participants provided sleep duration data from validated sleep tracking devices. In line with previous research, sleep quality was found to correlate weakly with both MT and PSU. While several significant correlations emerged when objective data were explored, in all cases, the effect sizes were negligible. This study does not support the claim that PSU has a clinically meaningful impact upon sleep duration. Sleep hygiene recommendations with more well-established empirical support should be prioritised during sleep promotion efforts.

Associations between organised sports participation, general health, stress, screen-time and sleep duration in adolescents.

Physical activity patterns in adolescents have been associated with general health. Stress, screen-time and sleep are other factors associated with physical activity that influence health in adolescents. Physical activity accounts for several health benefits; however, the impact of organised sports participation to achieve the same health benefits are less explored. This study explored the associations of organised sports participation with general health, stress, screen-time and sleep-duration in adolescents. For this cross-sectional study, data from 1139 adolescents (age 13-14 years) from 34 schools were analysed. Data were collected during autumn 2019. Data collection consisted of self-reported questionnaires and standard methods for height and weight measurements. Adolescents with organised sports participation ≥3 times/week were twice as likely to report better general health (OR: 2.11, CI: 1.45-3.07) and lower screen-time (OR: 1.98, CI: 1.43-2.74). Adolescents with organised sports participation ≥3 times/week were less likely to meet the recommended sleep-duration on weekdays (OR: 0.43, 95% CI: 0.29-0.65). Adolescents with frequent organised sports participation had better general health, lower amounts of screen-time and shorter sleep-duration on weekdays than those with no participation. Although the causal relationships remain unknown, these results can be relevant when developing strategies promoting physical activity and health in adolescents.

Sleep duration and level of salivary C-reactive protein in adolescent students studying in different school start timing

The purpose of this study is to investigate the association of adolescent sleep duration and day time sleepiness with salivary CRP level among school students studying in different school start timings. A total 488 healthy school students of adolescent age (12-14yrs), participated in the present study. Both boys and girls of 7th and 8th class having 3 different school start timings (7:30 am, 8:30 am and 10:00 am), not taking any type of medication previously were included. After taking consent from respective schools and parents, Epworth sleepiness scale and Munich chronotype questionnaires was asked to fill by them to get information about their sleep habitats, sleep duration during weekdays and weekends. Saliva sample of same students was taken in small vials of 1.5 ml at morning 9:00 am only. Sample was stored at 2-80C for further quantitative analysis. The test was performed using RHELAX CRP KIT. Present study reveals a significant negative correlation of C- reactive protein level with sleep duration (p&lt;0.01). 7:30 am school students get less sleep duration (6.8 h) than 8:30 am (8.5 h) and 10:00 am (8.7 h) in weekdays. Also, the average ESS score of 7:30 am school timing students was more than other 2 delayed school start timing students. The percentage of sleep dissatisfaction was also higher in early school students (46%) than other 2 later school timings (28%, 20.09%) with almost 50% students having EDS. Statistical analysis of data revealed a significant positive correlation between CRP level with daytime sleepiness (ESS score) and sleep debt (p&lt;0.01). In conclusion, earlier school start timing students are more sleep deprived with higher ESS score than delayed school start timing students. This chronic sleep deprivation is leading to increase in the level of CRP in saliva indicating CRP as a potent indicator of sleep deprivation. The findings of the present study suggest that delaying of school start timing will not only increase the sleep duration of students but also decrease the level of CRP with improvement of sleep quality and health of these adolescents.

Sleep duration and its association with cardiometabolic outcomes among adolescents enrolled in the SI Program in Spain

Abstract Background Sleep duration has been inversely associated with increased prevalence of overweight/obesity in childhood and adolescence [1, 2]. However, large studies linking over time objectively measured sleep duration and other cardiometabolic outcomes in adolescence are lacking. Purpose To evaluate sleep duration and its association with cardiometabolic outcomes in a large cohort of adolescents aged 12 to 16 years from the SI! Program for Secondary Schools trial in Spain [3], together with its relationship with sociodemographic variables. Methods Seven-day actigraphic recording was performed in 1229 adolescents at baseline (49.7% girls; 12.5 (0.4) years), 1058 at first follow-up (51.1% girls; 13.9 (0.4) years), and 895 at second follow-up (52.3% girls; 15.8 (0.4) years). Three groups were defined: very short sleep duration (&amp;lt;7 h), short sleep duration (7 to 8 h), and reference sleep duration (≥8 h) [4]. Overweight/obesity were determined according to BMI age- and sex-adjusted percentiles. Continuous Metabolic Syndrome (MetS) score was calculated as the sum of the age-and-gender specific z-scores of mean arterial pressure (MAP) (MAP = ((systolic BP − diastolic BP)/3) + diastolic BP), waist circumference, and fasting blood measures of high-density lipoprotein cholesterol (HDL-c) levels multiplied by −1, triglycerides, and glucose levels [5]. Associations between sleep duration and cardiometabolic outcomes were analyzed using generalized linear and Poisson distribution adjusted models. Results At 12 years of age, only 34.2% of the adolescents met sleep recommendations (sleep hours ≥8), and this percentage decreased with advancing age (23.4% and 19.4% at approximately 14 and 16 years of age, respectively) (Figure 1). Boys and individuals from migrant families tended to sleep shorter. Moreover, sleep duration was directly associated with sleep quality and efficiency. After adjusting for potential cofounders, very short sleepers (&amp;lt;7h) had a higher prevalence ratio (PR) of overweight/obesity at baseline (PR: 1.21 [95% CI: 1.16 to 1.27]) and at first follow-up (PR: 1.72 [95% CI: 1.08 to 2.74]) than the reference group (≥8 h) (Figure 2). Similarly, very short sleepers showed higher mean MetS scores at baseline (0.98 [95% CI: 0.43 to 1.54] and at first follow-up (0.76 [95% CI: 0.24 to 1.27]) as compared with the reference group. Short sleepers showed similar trends with associations of weaker magnitude, as they were the overall associations between sleep duration and cardiometabolic outcomes at second follow-up. Conclusions Most adolescents, and particularly those with a migrant background, did not meet sleep recommendations. Moreover, a shorter sleep duration was associated with cardiometabolic outcomes, particularly at 12 and 14 years of age and when sleeping less than 7 hours. Health promotion programs should emphasize the importance of good sleep habits. Funding Acknowledgement Type of funding sources: Other. Main funding source(s): 1. Fundaciό la Maratό de TV3.2. SHE Foundation and “la Caixa” Foundation.

Adolescent sleep duration and cardiometabolic risk in adulthood: Evidence from sibling comparison designs with biomarker data.

Despite the well-established link between sleep patterns and physical health, less is known about whether sleep duration during adolescence is related to physical health in adulthood. This study examines: (a) whether there is an association between sleep duration in adolescence and cardiometabolic risk in adulthood, and (b) whether this association differs by sex. Using data from the National Longitudinal study of Adolescent to Adult Health, this study estimates sibling fixed effects models to account for unobservable family-specific heterogeneity. This study investigates whether sleep duration in adolescence is associated with cardiometabolic risk in adulthood, independently of sleep duration in adulthood. Conventional OLS regression models showed that, compared with individuals who slept 8-9 hr per night during adolescence, those who slept 6 or fewer hours had higher cardiometabolic risk in adulthood (about 13 years later). This was the case for both females and males. Controlling for unobserved family heterogeneity, however, substantially attenuated the association among females, rendering it statistically insignificant. The association for males was robust to controlling for sibling fixed effects. This study also found that the observed association for males is not explained by sleep duration in adulthood. Adolescent sleep duration is associated with cardiometabolic risk in adulthood among males, but not females. A life course approach should be adopted in interventions aiming to reduce cardiovascular disease and diabetes. In particular, this study suggests that a fruitful approach to preventing cardiovascular issues in adulthood includes public health interventions that promote healthy sleeping patterns during adolescence. (PsycInfo Database Record (c) 2022 APA, all rights reserved).

Physical Activity and Sleeping Duration Among Adolescents in the US.

Sleep plays a critical role in the development of adolescents. Identifying the factors influencing adolescent sleep duration is a critical public health concern. Our study was designed to look for associations that may affect sleep duration in adolescent students. A cross-sectional research method was used to evaluate a dataset of thousands of adolescent students who were polled. The study assessed whether there was a correlation between exercise and length of sleep. The research showed a statistically significant positive correlation between the studied variables. We found that while demographic variables modify this association, a positive correlation exists even after controlling for these confounders. Our findings suggest that promoting physical activity can increase the quantity of sleep among adolescents.

Association between overweight, obesity and sleep duration and related lifestyle behaviors is gender and educational stages dependent among children and adolescents aged 6-17 years: a cross-sectional study in Henan

BackgroundTo investigate the associations between overweight, obesity and sleep duration and related lifestyle behaviors in children and adolescents at different gender and educational stages.MethodsA cross-sectional study comprising 18723 children and adolescents with a stratified cluster sampling method of Henan Province was conducted in 2019. A self-reported questionnaire was used to collect the information about demographic characteristics as well as sleep and lifestyle behaviors. Anthropometric measurements (height and weight) were taken and body mass index was computered as an indicator of overweight and obesity. The Chi-square test, one-way analysis of variance and multiple logistic regression were used to data analysis.ResultsAmong the respondents, 12657(67.6%) were with normal weight, 3711(19.8%) were overweight and 2355(12.6%) were obesity. The average age of the participants was 12.6 years old. The proportion of overweight and obesity in the 10191 boys was 18.7% and 14.2% respectively. The proportion of overweight and obesity in the 8532 girls was 21.2% and 10.6% respectively. In trend analyses, sleep duration at different gender found with the decreased of the sleep duration, the proportions of overweight/obesity in boys and girls were gradually increased (Ptrend<0.05). In the adjusted logistic regression models, the results showed stratified by gender, compared with the recommended sleep duration group, students with very short sleep duration and short sleep duration showed an increased ORadj of 2.56 and 2.13 in boys, 2.34 and 2.09 in girls respectively. According to different educational stages, those in very short sleep duration and short sleep duration showed an increased ORadj of 2.15 and 1.69 in primary school, 2.26 and 1.58 in middle school, 2.23 and 1.51 in high school respectively.ConclusionsChildren and adolescents with very short sleep duration and short sleep duration may increase the risk of overweight/obesity, the association differed based on the gender-specific and educational stages-specific. Gender and educational stages should be regarded as specific characteristics for the effects on overweight/obesity in Henan Province.

Racial/Ethnic and Sex/Gender Differences in Sleep Duration Trajectories From Adolescence to Adulthood in a US National Sample.

Racial/ethnic and sex/gender disparities in sleep duration have been documented in adolescence and adulthood. Identifying racial/ethnic and sex/gender differences in sleep duration trajectories from adolescence to adulthood can inform interventions on the developmental periods individuals are most at risk for short sleep duration. We examined racial/ethnic and sex/gender differences in self-reported sleep duration trajectories from adolescence to adulthood using data from waves I, III, IV, and V of the National Longitudinal Study of Adolescent to Adult Health (1994-2018; n= 12,593). Multigroup growth mixture modeling was used to enumerate sleep duration trajectories from adolescence to adulthood. There were 3 common trajectory types across race/ethnicity and sex/gender groups: 1) consistent increasing short sleepers (i.e., increasing probability of short sleep into adulthood) (67.3%); 2) late-onset short sleepers (i.e., no probability of short sleep duration in adolescence until adulthood) (20.2%); and 3) early-onset short sleepers (i.e., declining probability of short sleep duration from adolescence into adulthood) (12.5%). The prevalence of the consistent-increasing trajectory was highest among Black male respondents, while late onset was highest among White female respondents and early onset greatest among Latinx male respondents. Findings underscore the need to intervene in early adolescence to prevent short sleep duration in adulthood.

La somnolence chez les adolescents: étiologie et conséquences multiples

Over the past century a dramatic decline in sleep duration among adolescents, such as more than one hour of sleep loss per night, has been reported. A debt in sleep duration could lead to sleep deprivation, a major risk factor associated with daytime sleepiness. Sleepiness refers to the inability to maintain an adequate level of alertness during the day which may result in more or less being able to control falling asleep at inappropriate times. This literature review updates on sleepiness regarding its characteristics, etiology and consequences on adolescents. Studies revealed that from 25 % to 78 % of adolescents had reported sleepiness. Its manifestations may include heavy lids, yawns, difficulties to concentrate and emotional irritability. In addition, while it is recommended that adolescents under 18 years-old should sleep from eight to ten hours a night, only 63 % of them actually do so. The etiology of sleep deprivation and sleepiness in this population can be explained by various biological and societal factors. First, the sleep-wake cycle of adolescents shows a biological shift from the beginning of pubertal maturation, described as a perfect storm. It refers to a social jetlag by going to sleep and waking up later and accumulating a sleep debt during weekdays which they try to reimburse during weekends. This phenomenon can be explained by physiological changes such as a slower accumulation of sleep pressure. In addition to this perfect storm, environmental and societal factors contribute to the social jetlag and reduce sleep duration in adolescents. Screen exposure before bedtime can delay sleep and wake onset, which is a risk factor for sleeping debt. Substance use such as caffeine, cigarettes or electronic vaporizer, ADHD or freely available medication, alcohol, cannabis use or drug consumption could further disrupt sleep-wake cycle by stimulating, depressing or otherwise disrupting the central nervous system. Early, before 8:30 am, class start times have been associated with chronic sleep deprivation, higher level of sleepiness and delayed melatonin peak secretion. Adolescents working or doing extracurricular occupations for more than 20hours a week are more at risk for reduced sleep duration and sleepiness. Parental supervision about sleep during the weekdays were associated with more appropriate bedtime. Adolescents from low socio-demographic characteristics and from minority ethnic groups have reported displaying a shorter sleep duration. Finally, sleep disorders of a physiological origin such as narcolepsy, sleep apnea or restless legs syndrome, may explain the sleep deprivation and sleepiness. Sleep deprivation and sleepiness in adolescents have consequences on their health. Cognitive functioning, such as problem solving, attention or memory, as well as school performance, can be compromised by sleep deprivation and sleepiness. At the psychological level, adolescents reporting sleepiness are more prone to display mental health problems: associations were found between sleepiness and subjective perception of depression, anxiety, somatic complaints as well as with antisocial behaviors. Finally, 68 % of 16 year-old adolescents reported they drove a car, and the reported sleepiness could lead to road accidents due to reduced attentional functioning, reaction time and decision-making abilities. In the United-States, from 7 % to 16.5 % of deadly accidents were related to driving while drowsy. Highlighting etiology and problems associated with sleep deprivation and sleepiness in adolescents could guide researchers and clinicians towards the development of possible interventions. Public health measures and knowledge transfer programs regarding modifiable psychosocial and societal factors associated with sleep-wake bioregulation could increase awareness in parents as well as in political and societal decision makers.

Prevalence and Factors Associated with Overweight/Obesity in Adolescent School Girls: A Cross-Sectional Study in Kolkata, India

Overweight and obesity in adolescent girls are considered a leading global public health issues in recent times. There is a need to evaluate the potential socioeconomic and behavioural factors behind adolescents’ overweight and obesity in different environmental settings. The present study aims to understand the prevalence of overweight and obesity among urban adolescent school girls and to determine the association between selected socioeconomic and behavioural factors and overweight/obesity. This is a cross-sectional study using a multistage stratified cluster sampling with a sample size of 1041 adolescent girls aged 10 to 18 years from schools of Kolkata, India. Overall prevalence of overweight and obesity were 18.9% and 23.7%, respectively. The prevalence of overweight and obesity was higher among those adolescent girls whose parents had completed higher education (49.5%) and had higher monthly per capita household expenditure (48.4%). Stepwise binary logistic regression analysis confirmed that the probability of being overweight/ obese tended to be in adolescents who slept less than 7 hours per day (p&lt;0.001). Overweight /obesity was also higher among those children whose fathers were fatty (p=0.002), taken medicines three months before the survey (p=0.008), and watched television and mobile phones for more than 1 hour a day (p=0.039). Rapid change in modern lifestyles is seemingly decreasing sleep duration in adolescents with subsequent negative impact on their health.

Prevalence, patterns and socio-demographic correlates of sleep duration in adolescents: results from the LABMED study

Prevalence, patterns and socio-demographic correlates of sleep duration in adolescents: results from the LABMED study

Sleep Timing and Duration in Adolescents with Debilitating Chronic Orthostatic Intolerance

Sleep Timing and Duration in Adolescents with Debilitating Chronic Orthostatic Intolerance