The effects of social jetlag and sleep variability on sleepiness in a population-based study: The mediating role of sleep debt

Article Biology

Social jetlag among Japanese adolescents: Association with irritable mood, daytime sleepiness, fatigue, and poor academic performance

Norihisa Tamura et al.

Summary: This study found that social jetlag is highly prevalent among Japanese adolescents and could be a major risk factor for irritable mood, daytime sleepiness, and poor academic performance.

CHRONOBIOLOGY INTERNATIONAL (2022)

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Article Health Care Sciences & Services

Social, Biological and Behavioral Factors Associated with Social Jet Lag and Sleep Duration in University Students from a Low Urbanized City

Xaize de Fatima de Medeiros Lopes et al.

Summary: In the low urbanized city of Brazil, university students exhibit social jet lag, shorter sleep duration on school days, and longer sleep duration on weekends due to biological, social, and primarily behavioral factors. Conducting leisure activities and academic demands before bedtime on weekends, as well as doing household chores before bedtime during the week, were associated with an increase in social jet lag, while consuming stimulating drinks was associated with a decrease. Shorter sleep duration during the week was related to chronotype, gender, leisure activities, perception about sleeping place, and daily commute.

JOURNAL OF MULTIDISCIPLINARY HEALTHCARE (2022)

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Article Medicine, General & Internal

Evaluation of Sleep Habits and Disturbances Among US Adults, 2017-2020

Hongkun Di et al.

Summary: In the period from 2017 to 2020, US adults demonstrated varying sleep habits between workdays and free days, with longer duration and later sleep-wake phases on free days. A high percentage of adults experienced long-term sleep deprivation, chronic social jet lag, and frequent sleep disturbances.

JAMA NETWORK OPEN (2022)

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Review Medicine, General & Internal

Understanding and approaching excessive daytime sleepiness

Laura Perez-Carbonell et al.

Summary: Excessive daytime sleepiness is a underestimated public health issue, associated with various sleep disorders and other conditions. It can lead to health problems and is considered a risk factor for other diseases. Management should be tailored to individuals based on the underlying causes.

LANCET (2022)

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Article Clinical Neurology

Risk factors of excessive daytime sleepiness in a prospective population-based cohort

Mathieu Berger et al.

Summary: This study investigated predictors of incident and persistent excessive daytime sleepiness over 5 years in a population-based cohort in Switzerland, and found that factors like male sex, depressive symptoms, poor sleep quality, and obstructive sleep apnea were associated with incident excessive daytime sleepiness, while older age, moderate coffee consumption, leg movement during sleep, and hypertension were protective factors. Further interventional studies are needed to understand the impact of treating these risk factors on excessive daytime sleepiness.

JOURNAL OF SLEEP RESEARCH (2021)

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Article Biology

Association between social jet lag, quality of diet and obesity by diurnal preference in Finnish adult population

Tiina Suikki et al.

Summary: Evening types are more likely to experience social jet lag compared to morning types, but the degree of social jet lag is only associated with the quality of diet and obesity in morning types.

CHRONOBIOLOGY INTERNATIONAL (2021)

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Article Environmental Sciences

Sleep Debt and Social Jetlag Associated with Sleepiness, Mood, and Work Performance among Workers in Japan

Isa Okajima et al.

Summary: The study revealed that the impact of sleep debt on daytime sleepiness, mood, and work performance was greater than that of social jetlag, although both had negative impacts on these aspects.

INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH (2021)

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Article Nutrition & Dietetics

Social Jetlag and Related Risks for Human Health: A Timely Review

Rocco Caliandro et al.

Summary: Social jetlag refers to the discrepancy between our internal body clock and social times, mainly driven by social obligations like work or school. Despite efforts to understand its effects on human health, our knowledge of social jetlag remains limited. Due to its prevalence, social jetlag is now a major concern for public health.

NUTRIENTS (2021)

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Article Public, Environmental & Occupational Health

Work Habit-Related Sleep Debt; Insights From Factor Identification Analysis of Actigraphy Data

Yuki Goto et al.

Summary: This study investigated the factors of Weekday sleep debt (WSD) and found that evening chronotype, instability of daily activity rhythm, and differences in work habits on specific days of the week may be associated with WSD. Proper management of activity rhythm could contribute to the prevention of sleep debt.

FRONTIERS IN PUBLIC HEALTH (2021)

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Article Clinical Neurology

Measuring sleep regularity: theoretical properties and practical usage of existing metrics

Dorothee Fischer et al.

Summary: Sleep regularity is important for health outcomes, but there is currently no systematic approach to measuring it; new metrics like CPD and SRI show promise in capturing variability between consecutive days; different metrics perform differently in various scenarios, and selecting the most appropriate metric depends on factors such as data type, study length, and sample size.

SLEEP (2021)

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Article Clinical Neurology