Sleep Duration In Relation Research Articles

Sleep duration, sleep quality and obesity in the Canadian Armed Forces.

Research has identified an association between sleep and obesity in the general population. It is also important to examine this association in a military population. Data from the 2019 Canadian Armed Forces Health Survey (CAFHS) were used to estimate the prevalence of sleep duration, sleep quality characteristics, overweight and obesity for Regular Force members. The relationship of sleep duration and sleep quality with obesity was assessed with multivariable logistic regression that controlled for sociodemographic, work and health characteristics. Females were significantly more likely than males to report meeting recommended sleep duration (7 hours to less than 10 hours; 48.7% vs. 40.4%), trouble falling or staying asleep (32.3% vs. 23.5%), or that sleep was not refreshing (64.0% vs. 57.7%). Difficulty staying awake did not differ significantly between males and females (6.3% vs. 5.4%). Obesity, but not being overweight, was significantly more prevalent among those who had short (less than 6 hours) or borderline (6 hours to less than 7 hours) sleep duration, or poor sleep quality. Compared with recommended sleep duration, short sleep duration (adjusted odds ratio [AOR] 1.3; 95% confidence interval [CI]: 1.2 to 1.6) and borderline sleep duration (AOR 1.2; 95% CI: 1.1 to 1.4) were associated with obesity for males, but not females, in fully controlled models. Sleep quality indicators were not independently associated with obesity. This study adds to the body of evidence that identifies an association between sleep duration and obesity. The results emphasize the importance of sleep as one of the components of the Canadian Armed Forces Physical Performance Strategy.

Relationship of sleep duration and sleep quality with health-related quality of life in patients on hemodialysis in Neyshabur

BackgroundAs a public health priority, health-related quality of life (HRQoL) is associated with some factors like sleep disorders. Taking this into consideration, this study aimed at investigating the relationship between sleep duration and sleep quality with HRQoL in patients on hemodialysis. MethodsThis cross-sectional study was carried out among 176 patients on hemodialysis who were admitted to the dialysis ward of 22 Bahman hospital and a private renal clinic in Neyshabur (a city in North-East of Iran) in 2021. Sleep duration and quality were measured using an Iranian version of Pittsburgh Sleep Quality Index (PSQI) and HRQoL was evaluated with the Iranian version of a 12-Item Short Form Survey (SF-12). To analyze the data and examine the independent association of sleep duration and quality with HRQoL, multiple linear regression model was performed. ResultsThe mean age of the participants was 51.6 ± 16.4 and 63.6% were male. Moreover, 55.1% and 5.7% of subjects reported a sleep duration shorter than 7 h and equal to or more than 9 h, respectively, and the value prevalence of poor sleep quality was reported as 78.2%. Furthermore, the reported overall score of HRQoL was 57.6 ± 17.9. According to the adjusted models, poor sleep quality was negatively associated with the total HRQoL score (B = −14.5, P < 0.001). Shedding light on sleep duration and Physical Component Summary (PCS), the result indicated that insufficient sleep duration (<7 h) had a borderline negative association with PCS (B = −5.96, p = 0.049). ConclusionsSleep duration and quality have important effects on HRQoL in patients on hemodialysis. Therefore, in line with improving sleep quality and HRQoL among these patients, essential interventions should be planned and performed.

Relationship of sleep duration with incident cardiovascular outcomes: a prospective study of 33,883 adults in a general population

BackgroundStudies on the effect of sleep duration on cardiovascular health have contradictory findings. Underlying health issues may have led to inconsistent results and warrant consideration. We aim to assess the relationship of night sleep duration with incident cardiovascular disease (CVD) in a general population, taking into consideration underlying chronic diseases.MethodsData from Shanghai Suburban Adult Cohort and Biobank with a median follow-up of 5.1 years was used, including 33,883 adults aged 20–74 years old. Incident CVD cases were reported and recorded by the Center for Disease Prevention and Control in Songjiang, Shanghai. We used Cox proportional hazard regression models and restricted cubic spline (RCS) analysis to explore the relationship between different sleep groups and sleep duration with incident CVD outcomes, through stratification by gender and age, as well as different health conditions, with adjustments for potential confounders.ResultsLong sleep duration (> 9 h) compared to > 7 to ≤ 8 h was associated with overall incident CVD in participants aged ≥ 50 years old: HR(95%CI) = 2.07 (1.15, 3.74) for 50-59y and 1.43 (1.04, 1.93) for 60-74y. RCS analysis showed a J-shaped relationship between sleep and CVD risk in those ≥ 50y, which was confirmed only in those with a chronic health condition. Non-linear relationships between sleep and CVD risk factors, such as BMI, blood glucose and glycated haemoglobin, were observed.ConclusionsLong sleep duration is associated with increased risk of CVD in people ≥ 50y. However, CVD risk factors and underlying health conditions such as hypertension, and diabetes, may play a driving role in the relationship.

The Relationship of Sleep Duration, Excersise Habits, Physical Activity and Eating Frequency to Nutritional Status of Students of SMAN 22 Surabaya During The Pandemic Covid-19

Background: The COVID-19 pandemic that has spread throughout the country has caused changes in behavior patterns due to social restrictions. This has resulted in activities outside the home and in open spaces being limited and even abolished and replaced with online activities (in the network). Students who usually take part in teaching and learning activities and do sports and extracurricular activities that they like at school turn into online activities at home. Teenagers cannot socialize with their friends and their space becomes limited during the Covid-19 pandemic so they tend to play social media and get a lot of sleep disorders and experience depression. In addition to changing activities, adolescents' eating patterns and sleep duration also change due to changes in daily routines. This condition affects the nutritional status of adolescents.Objectives: This study was conducted to analyze the relationship between sleep duration, exercise habits, physical activity and eating frequency with the nutritional status of the students of SMAN 22 Surabaya.Method: This research is an analytical observational study conducted at SMA Negeri 22 Surabaya with 170 respondents aged 15-17 years. The measurements taken included the respondent's nutritional status, anthropometry, sleep duration, exercise habits, physical activity and adolescent eating frequency during the pandemic. Statistical analysis used to test the hypothesis of this study using the chi-square test.Result: The nutritional status of non-obese as many as 94 students, and nutritional status of obesity as many as 76 students. Respondents with short sleep duration were 53 students, adequate sleep duration was 105 students, and long sleep duration was 12. Respondents with regular exercise habits were 45 students, and non-routine exercise habits were 125 students. Respondents with light physical activity were 75 students, moderate physical activity was 49 students, and high physical activity was 45 students. Respondents with low eating frequency were 113 students, 37 students had moderate eating frequency and 20 students had high meal frequency.Conclution: nutritional status is related to sleep duration, exercise habits, and eating frequency during the pandemic.

Sleep duration and eating behaviours among adolescents: a scoping review.

In the past decade, investigations of the relationship between sleep duration and eating behaviours have been emerging; however, a formal synthesis of the literature focussed on adolescent populations has not yet been conducted. We conducted a scoping review of the literature examining the relationship between sleep duration and eating behaviours in adolescents. Gaps in the research and directions for future research were identified based on the findings. A systematic search was employed on four research databases: PubMed, PsycInfo, CINAHL and Scopus; relevant grey literature was also reviewed. Studies that reported on the relationship between sleep duration and eating behaviours among high school-aged adolescents were included in the review. Data were extracted, charted and synthesized into a narrative. Consistent with the purpose of a scoping review, the methodological quality of the studies was not appraised. Stakeholders were consulted to validate the findings and provide insight into the interpretation and identification of pressing gaps in the research that remain to be addressed. In total, 61 studies published between 2006 and 2021 met the criteria for review. Existing research focussed heavily on examining sleep duration in relation to intake of food from certain food groups, beverages and processed foods, and relied on a population study design, cross-sectional analyses and self-report measures. Future research is needed to understand the link between sleep duration and eating-related cognition, eating contexts and disordered eating behaviours in order to better understand how ensuring sufficient sleep among adolescents can be leveraged to support healthier eating practices and reduce diet-related risks.

Relationship of Sleep Duration, Concentration, BMI and Dietary Behavior of European Adolescents – Results From the HELENA-Study

ObjectivesLow sleep quality and duration are associated with the development of overweight and obesity. This link is discussed to result from an unfavorable selection of food items after sleep deprivation on the one hand; on the other hand, fatigue also reduces the willingness to engage in physical activity. Furthermore, sleep duration and quality seem to be associated with cognitive development in children. The aim of this analysis was to assess these associations in European adolescents.MethodsAs part of the Healthy Lifestyle in Europe by Nutrition in Adolescence “HELENA” study (October 2006 - June 2007), concentration ability was assessed in 500 adolescents (12.5–17.4 years) using d2 test which was evaluated in age-corrected percentiles (concentration index). Sleep duration during the week and during the weekend was surveyed and divided into age-appropriate groups (too short, optimal, too long) with an optimal sleep duration of 9–12 h for 12-year-olds and 8–10 h for 13–18-year-olds. Dietary behavior was assessed using two 24 h recalls, which were subsequently summarized in the Diet Quality Index for adolescents (DQI). Body height and weight were collected and the calculated BMI was subsequently transformed to percentiles. Whether sleep duration was associated with BMI, dietary behavior, or attention was examined using the Kruskal-Wallis test. Furthermore, Spearman correlations were performed.ResultsOn average, 59.4% (n: ♀ = 167; ♂ = 130) of adolescents slept for the optimal duration, 36.4% (n: ♀ = 96; ♂ = 86) slept too short, and 4.2% slept longer than recommended. No significant difference was observed between groups of sleep duration within BMI percentiles (p = 0.193), attention (p = 0.520), and DQI (p = 0.742). In addition, no significant correlation was observed between average sleep duration, BMI percentile, attention, and DQI. There was a significant negative correlation between age and sleep duration (r = −0.317; p < 0.001).ConclusionsEven though slightly more than one third of the adolescents within the HELENA study got less than optimal sleep, no differences were found in terms of their BMI, dietary behavior or ability to concentrate, but age might play a role.Funding SourcesEuropean Community sixth RTD Framework Programme.

The Relationships of Sleep Duration and Inconsistency With the Athletic Performance of Collegiate Soft Tennis Players.

We evaluated the relationships of daily sleep duration and inconsistency with soft tennis competitive performance among 15 healthy collegiate soft tennis players (13 male, 2 female, mean age = 19.7 ± 0.8 years, height = 170.8 ± 7.3 cm, weight = 60.3 ± 5.6 kg, soft tennis experience = 8.7 ± 2.0 years). Sleep duration and inconsistency were determined by a 50-day sleep diary, which recorded sleep and wake times of sleep. Soft tennis athletic performance was evaluated by a service and baseline stroke accuracy test and the spider run test. Mean sleep duration was 7.4 ± 1.7 h. No correlation was found between long-term mean sleep duration and athletic performance. But inconsistency in sleep duration (SD of sleep duration) was inversely correlated with service score after controlling for soft tennis experience and sex (r = −0.56, p = 0.046). There was no significant relationship between sleep inconsistency and other athletic performance. This result indicates that reducing the instability of sleep duration (i.e., sleep regular hours) in the long-term may have a positive effect on soft tennis players’ service performance. Although participants’ current mean sleep duration (7.4 h) was not as sufficient as the recommendation in sleep extension experiments (9–10 h), it revealed the importance for athletes to maintain regular sleep in daily life.

Relationship of sleep duration and annual changes in sleep duration with the incidence of gastrointestinal cancers: a prospective cohort study.

Background:Prospective analyses have yet to identify a consistent relationship between sleep duration and the incidence of gastrointestinal (GI) cancers. The effect of changes in sleep duration on GI cancer incidence has scarcely been studied. Therefore, we aimed to examine the association between baseline sleep duration and annual changes in sleep duration and GI cancer risk in a large population-based cohort study.Methods:A total of 123,495 participants with baseline information and 83,511 participants with annual changes in sleep duration information were prospectively observed from 2006 to 2015 for cancer incidence. Cox proportional-hazards models were used to calculate hazard ratios (HRs) and their confidence intervals (CIs) for GI cancers according to sleep duration and annual changes in sleep duration.Results:In baseline sleep duration analyses, short sleep duration (≤5 h) was significantly associated with a lower risk of GI cancer in females (HR: 0.31, 95% CI: 0.10–0.90), and a linear relationship between baseline sleep duration and GI cancer was observed (P = 0.010), especially in males and in the >50-year-old group. In the annual changes in sleep duration analyses, with stable category (0 to −15 min/year) as the control group, decreased sleep duration (≤−15 min/year) was significantly associated with the development of GI cancer (HR: 1.29; 95% CI: 1.04–1.61), especially in the >50-year-old group (HR: 1.32; 95% CI: 1.01–1.71), and increased sleep duration (>0 min/year) was significantly associated with GI cancer in females (HR: 2.89; 95% CI: 1.14–7.30).Conclusions:Both sleep duration and annual changes in sleep duration were associated with the incidence of GI cancer.

Abstract P070: Longer Sleep Duration Is Associated With Less Myosteatosis In African Caribbean Adults

Introduction: Skeletal muscle is the largest organ in the human body and vital to maintaining metabolic homeostasis. Increased skeletal muscle fat infiltration (i.e. myosteatosis) is now recognized as a major risk factor for cardio-metabolic diseases, independent of general obesity. Modifications in lifestyle, such as sleep, to reduce myosteatosis would be of great public health importance. However, studies of this relationship often use subjective data and are lacking in minority populations. The aim of this study was to examine the relation between objectively measured sleep duration and myosteatosis at the calf among African Caribbeans. Methods: Data were collected on men (n=393) and women (n=438) from the Tobago Health Study. Sleep duration and physical activity was collected using a SenseWear Pro Armband (BodyMedia, Inc.). Participants were instructed to wear the armband at all times, except in water, for 4-7 days. Measures of muscle density, intermuscular adipose tissue (IMAT), and area were obtained by peripheral QCT scans of the calf (Stratec XCT-2000). Model covariates included age, sex, BMI, diabetes, alcohol intake, smoking, and moderate to vigorous physical activity (MVPA). Linear regression was used to assess the relationship of sleep duration on skeletal muscle. Results: Mean sleep duration was 5.5 hours/day (Min 2.2, Max 11.6). Overall, participants were aged 58.7 years, had a BMI of 30.2 kg/m 2 , spent an average of 42 min/day in MVPA, and 18% were diabetic. In fully adjusted models, longer sleep duration was associated with smaller muscle area, but greater muscle density and less IMAT (all P&lt;0.03). There was no interaction of sleep and sex on muscle density, area and IMAT (p-value=0.5184; 0.2730; 0.0954). Conclusions: In African Caribbean men and women, longer sleep duration was associated with less myosteatosis, as well as, less muscle area at the calf. Further research is warranted to understand this relationship longitudinally in order to determine how it may inform lifestyle guidelines in the Caribbean.

Relationships of Sleep Duration, Midpoint, and Variability with Physical Activity in the HCHS/SOL Sueño Ancillary Study

Relationships of Sleep Duration, Midpoint, and Variability with Physical Activity in the HCHS/SOL Sueño Ancillary Study

The relationship of sleep duration and quality to energy expenditure and physical activity in children.

Shorter sleep duration has been linked to the risk for obesity in children. The pathways linking sleep duration and quality to the risk of obesity are unclear, particularly the effect of sleep on energetics. We investigated the relationship between sleep duration, quality and timing in children, to the basal metabolic rate (BMR), total energy expenditure (TEE) and physical activity (PA). Fifty nine children in two age-groups (5-11 and 12-18 years) underwent evaluation of body composition (DXA), BMR in a room calorimeter, free-living TEE by doubly labelled water method, sleep and PA (7-day Actiheart monitor) during school break. Sleep duration contributed to the variance in BMR (β = 0.11, P = .009) after adjusting for age-group, sex, lean and fat mass, but not to the variance in TEE. Late sleep timing was related to lower PA. In the younger age-group, children who met recommended sleep duration on ≥50% of the 7 days had higher light PA (P = .03) and lower sedentary time (P = .009). Suboptimal sleep is associated with lower BMR, lower PA, and higher sedentary behaviours in young children. Prospective studies are needed to confirm if insufficient sleep duration or late sleep timing contribute to obesity risk by increasing sedentary behaviours and decreasing BMR.

Associations between Body Mass Index, Sleep Duration, and Reported Snoring and Sleepiness Symptoms, By Age Stratification

To further clarify the associations between sleep and body mass index (BMI) using the most recent dataset from the National Health and Nutrition Examination Survey (NHANES). Our study is notable for the inclusion of analyses with age subpopulations and subjective sleep symptoms. Cross-sectional study was performed using the NHANES 2017-18 dataset. Weighted multivariate regressions were utilized. NHANES is a standardized survey conducted biennially in the United States, for a sample population which is weighted to represent national demographics. 6161 participants met inclusion criteria. Measurements were collected via NHANES protocol, with objective measurements collected by trained technicians and self-reported measurements collected via questionnaire. Our results corroborate a roughly U-shaped relationship of sleep duration with BMI, varying with age. Greatest magnitudes were observed in a bimodal age ranges of 18-30 and 61-75, with decreases in BMI of 0.248 and 0.385 associated with each marginal hour of sleep. Our secondary analysis with daytime sleepiness and snoring have a significant association with BMI. Snoring symptoms showed a decreasing magnitude of association with BMI as age increases; for ages 18-30, snoring at least once a week correlated with an increase in BMI of 3.571, while for ages 61-75, this correlated with an increase of 1.619. Our study adds to existing literature on the relationship of sleep and BMI. Age stratification methods were used to further clarify associations. Subjective sleep symptoms were used in a secondary analysis to identify clinical screening questions for adverse effects of sleep on BMI.

Associations between Body Mass Index, Sleep Duration, and Reported Snoring and Sleepiness Symptoms, By Age Stratification

To further clarify the associations between sleep and body mass index (BMI) using the most recent dataset from the National Health and Nutrition Examination Survey (NHANES). Our study is notable for the inclusion of analyses with age subpopulations and subjective sleep symptoms. Cross-sectional study was performed using the NHANES 2017-18 dataset. Weighted multivariate regressions were utilized. NHANES is a standardized survey conducted biennially in the United States, for a sample population which is weighted to represent national demographics. 6161 participants met inclusion criteria. Measurements were collected via NHANES protocol, with objective measurements collected by trained technicians and self-reported measurements collected via questionnaire. Our results corroborate a roughly U-shaped relationship of sleep duration with BMI, varying with age. Greatest magnitudes were observed in a bimodal age ranges of 18-30 and 61-75, with decreases in BMI of 0.248 and 0.385 associated with each marginal hour of sleep. Our secondary analysis with daytime sleepiness and snoring have a significant association with BMI. Snoring symptoms showed a decreasing magnitude of association with BMI as age increases; for ages 18-30, snoring at least once a week correlated with an increase in BMI of 3.571, while for ages 61-75, this correlated with an increase of 1.619. Our study adds to existing literature on the relationship of sleep and BMI. Age stratification methods were used to further clarify associations. Subjective sleep symptoms were used in a secondary analysis to identify clinical screening questions for adverse effects of sleep on BMI.

Relationships of Sleep Duration, Midpoint, and Variability with Physical Activity in the HCHS/SOL Sueño Ancillary Study

ABSTRACT Objective/Background Short and long sleep duration, later sleep midpoint, and greater intra-individual sleep variability are associated with lower physical activity, but previous research lacks objective and concurrent assessment of sleep and physical activity. This cross-sectional study examined whether sleep duration, midpoint, and variability in duration and midpoint were related to wrist actigraphy-measured physical activity. Participants Participants were 2156 Hispanics/Latinos in the Hispanic Community Health Study/Study of Latinos (HCHS/SOL) Sueño Ancillary Study. Methods Participants wore Actiwatch devices to measure sleep and physical activity via the wrist for ≥5 days. Physical activity was defined as minutes/day in the upper quartile of the sampling distribution’s non-sleep activity, capturing light to vigorous physical activity. Results An inverse linear relationship between sleep duration and physical activity was found such that each additional sleep hour related to 29 fewer minutes of physical activity (B = −28.7, SE = 3.8), p < .01). Variability in sleep midpoint was also associated with physical activity; with each 1-hr increase in variability there were 24 more minutes of physical activity (B = 24.2, SE = 5.6, p < .01). In contrast, sleep midpoint and variability in duration were not associated with physical activity. Sensitivity analyses identified an association of short sleep duration and greater variability in sleep duration with greater accelerometry-derived moderate-to-vigorous physical activity measured at the HCHS/SOL baseline (M = 2.1 years before the sleep assessment). Conclusions Findings help clarify inconsistent prior research associating short sleep duration and sleep variability with greater health risks but also contribute novel information with simultaneous objective assessments.

Association of self-reported sleep duration and quality with BaPWV levels in hypertensive patients

The association between sleep conditions and arterial stiffness remains inconclusive. We aimed to investigate the relationship of sleep duration and quality with brachial-ankle pulse-wave velocity (baPWV) in hypertensive patients. A total of 14,485 hypertensive adults were included in this cross-sectional analysis. Information about sleep duration and quality was obtained via questionnaire. A baPWV level ≥1800 cm/s was defined as indicative of arterial stiffness. Compared with participants with a sleep duration <8 h per day, participants with a sleep duration ≥8 h per day had a significantly higher baPWV level (β = 13.7 cm/s; 95% CI: 3.9, 23.5) and a nonsignificantly higher prevalence of arterial stiffness (39.7% vs. 33.0%; OR, 1.08; 95% CI: 0.99–1.19). Similarly, compared with participants with good or medium sleep quality, participants with poor sleep quality had a significantly higher baPWV level (β = 16.3 cm/s; 95% CI: 0.1, 32.6) and a nonsignificantly greater prevalence of arterial stiffness (36.6% vs. 35.3%; OR, 1.13; 95% CI: 0.97–1.32). When sleep duration and quality were examined jointly, participants with a sleep duration ≥8 h and/or poor sleep quality had a significantly higher baPWV level (β = 14.4 cm/s; 95% CI: 5.3, 23.4) and a greater prevalence of arterial stiffness (38.8% vs. 32.7%; OR, 1.10; 95% CI: 1.01–1.20) than those with a sleep duration <8 h and good/medium sleep quality. In summary, among hypertensive patients, a longer sleep duration (≥8 h per day) and poor sleep quality were associated with higher baPWV levels and a higher prevalence of arterial stiffness.

The Relationship of Sleep Duration with Ethnicity and Chronic Disease in a Canadian General Population Cohort.

Study ObjectivesSleep duration is an important marker of sleep quality and overall sleep health. Both too little and too much sleep are associated with poorer health outcomes. We hypothesized that ethnicity-specific differences in sleep duration exist.MethodsThis cross-sectional study utilized questionnaire data from the Ontario Health Study (OHS), a multi-ethnic population-based cohort of Canadian adult residents aged 18 to 99 years, who provided medical, socio-demographic, and sleep information. Generalised linear models were used to investigate the association of sleep duration with ethnicity.ResultsThe study sample consisted of 143,307 adults (60.4% women). The sample was multi-ethnic, including self-identified Aboriginal, Arab, Black, Chinese, Filipino, Hispanic, Japanese, Korean, Mixed (>1 ethnicity), South Asian, South-East Asian, West Asian, and White ethnicities. Univariate analyses found that mean sleep duration compared to the White reference group (7.34 hours) was shorter in the Filipino (6.93 hours, 25 min less), Black (6.96 hours, 23 min less), Japanese (7.02 hours, 19 min less), Chinese (7.23 hours, 7 min less), and Mixed (7.27 hours, 4 min less) groups (all P<0.001). Mean sleep duration was shorter in men (7.25 hours) compared to women (7.37 hours) in the cohort as a whole (P<0.001), and in all ethnic groups (P<0.001). Multivariate analyses, adjusted for a wide range of potential risk factors, and analysis of sleep duration as a categorical variable (“short”, “average”, and “long” sleepers) confirmed these relationships. Both sleep duration and ethnicity were independent significant predictors of a range of physician-diagnosed morbidities including diabetes, stroke, and depression.ConclusionImportant differences exist in sleep duration between ethnic groups and may contribute to observed health disparities. Our results highlight the need for ethnicity-specific targeted education on the importance of prioritizing sleep for good health, and the need to account appropriately for ethnicity in future epidemiological, clinical, and translational research into sleep and related conditions.

Short sleep duration is associated with specific food intake increase among school-aged children in China: a national cross-sectional study

BackgroundThe relationship between sleep duration and food intake is unclear. This study aims to examine the relationship among children aged 6–17 years in China.MethodsThe sample consisted of 70,519 children aged 6–17 years, which were randomly selected from 7 representative areas from China, from September to November, 2013. In the structured questionnaire, children reported daily sleep hours (less than 7 h, 7–9 h and more than 9 h), weekly food intake amount (including vegetables, fruit, sugar beverages and meat), physical activity and sedentary time. The relationship of sleep duration with vegetable, sugar beverage, fruit and meat intake was evaluated by multi-nominal logistic regression and multi-variable adjusted.ResultsA total of 62,517 children (51.6% boys) completed the study. Short sleep duration (SSD, < 7 h) was independently associated with increased sugar beverage intake (SBI, Odd Ratio, OR: 1.29, 95% CI: 1.19–1.40) but decreased vegetable (VI, OR: 0.94, 95% CI: 0.90–0.98) & fruit intake (FI, OR: 0.94, 95% CI: 0.88–0.99). Stratified by age and gender, SSD increased SBI for boys of both young (6–12 years) & older (13–17 years) groups and older girls (ORs: 1.25, 1.25, 1.49, 95% CI: 1.08–1.44, 1.04–1.50, 1.22–1.81, respectively), but decreased VI and FI for older girls (ORs: 0.84& 0.81, 95% CI: 0.74–0.96& 0.68–0.96, respectively).ConclusionsAmong school-aged children in China, short sleep duration was associated with increased risks of more sugar beverage intake among those younger and boys but less vegetable & fruit intake among those older and girls. Longitudinal research is needed to clarify the causation in between.

Sex Differences in Sleep Duration among Older Adults with Self-Reported Diagnosis of Arthritis: National Health and Nutrition Examination Survey, 2009-2012.

Objective Sleep is restorative, essential, and beneficial to health. Prevalences of some diseases have been associated with sleep duration. There are few studies in the literature on the relationship of sleep duration and arthritis stratified by sex in older adults. The purpose of this research is to investigate sleep duration among older adults in the United States who have self-reported diagnosis of arthritis. Methods A cross-sectional study design was used. The data source was the National Health and Nutrition Examination 2009-2010 and 2011-2012. Self-reported diagnosis of arthritis and sleep duration were the variables of interest. Results There were 4,888 participants, aged 50 years and above, of whom 41.6% self-reported having a diagnosis of arthritis, and 60.6% were female. Of the people who had a self-reported diagnosis of arthritis, 15.2% reported sleeping 2-5 hours as compared with 10.9% of the people who did not have a self-reported diagnosis of arthritis (P = .0004). In bivariate analysis of self-reported diagnosis of arthritis and sleep stratified by sex, there were significantly more people with self-reported diagnosis of arthritis who slept 2-5 hours for both women (P = 0.0192) and men (P = 0.0231). The overall relationship remained significant in adjusted overall logistic regression comparing for self-reported diagnosis of arthritis for 2-5 hours of sleep (with 6-7 hours of sleep as the reference) (odds ratio: 1.35 [95% CI: 1.08, 1.70; P = 0.0103]); however, when the data were stratified by sex, the association failed to reach significance. Conclusion In this analysis of noninstitutionalized older adults in the United States, the prevalence of a self-reported diagnosis of arthritis was associated with shorter sleep duration in the overall analyses, but the association failed to reach significance when stratified by sex.

Relationship of sleep duration with demographics, lifestyle, mental health, and chronic diseases

Relationship of sleep duration with demographics, lifestyle, mental health, and chronic diseases

Sleep duration and incidence of type 2 diabetes: the Multiethnic Cohort

ObjectivesAs an emerging risk factor for the rising incidence of type 2 diabetes, we examined sleep duration in relation to type 2 diabetes and several biomarkers. DesignProspective cohort recruited 1993-1996. SettingThe Multiethnic Cohort in Hawaii and California. ParticipantsA cohort of 151,691 White, African American, Japanese American, Native Hawaiian, and Latino participants; 9695 cohort members had biomarker measurements. MeasurementsSleep duration was self-reported at cohort entry. Diabetes status was obtained from 3 questionnaires and confirmed by 3 administrative data sources. Biomarkers were measured by standard assays 9.6±2.1 years after cohort entry. We estimated diabetes risk as a time-varying outcome using Cox regression adjusted for body mass index assessed at 3 time points and other known confounders and computed adjusted means of biomarkers by sleep hours. ResultsDuring 7.9±3.5 years of follow-up, 8487 new diabetes cases were diagnosed. Long sleep duration (≥9 hours), as compared with 7-8 hours, was significantly associated with higher incidence (hazard ratio, 1.12; 95% confidence interval 1.04-1.21), but the 4% elevated incidence for short sleep duration (≤6 hours) did not reach significance (95% confidence interval 0.99-1.09). After stratification, the associations appeared stronger in Japanese American than other ethnic groups and in participants without comorbidity. Hours of sleep were positively associated with C-reactive protein and triglycerides and inversely related to high-density lipoprotein cholesterol and adiponectin but not with leptin levels and homeostatic model assessment of insulin resistance. ConclusionIn this multiethnic population, the 12% higher diabetes risk for long sleep hours may be mediated through inflammation, a poor lipid profile, and lower adiponectin levels.