What is the clinical evidence from this study?

Study design: Cross-Sectional. Population: Dyslipidemia (n=4085). Intervention: Weekend catch-up sleep vs. No weekend catch-up sleep. Primary outcome: Prevalence of dyslipidemia in male workers (OR 0.76, 95% CI 0.61-0.95).

January 17, 2023Open Access

Association between weekend catch-up sleep and dyslipidemia among Korean workers

YJYe Seul JangYonsei University YPYu Shin ParkYonsei University KHKyungduk HurhGachon University

Key Result

Weekend catch-up sleep was associated with a lower risk of dyslipidemia (OR 0.76) among Korean male workers compared to those without catch-up sleep.

Study Design

Type

Cross-Sectional (n=4,085)

Structured PICO

Does weekend catch-up sleep reduce the prevalence of dyslipidemia in South Korean workers?

Population

4,085 South Korean workers (2,206 males, 1,879 females) aged ≥19 years, excluding those diagnosed with dyslipidemia and currently undergoing treatments, and those not participating in economic activities.

Intervention

Weekend catch-up sleep (CUS > 0 hours)

Comparator

No weekend catch-up sleep (non-CUS ≤ 0 hours)

Outcome

Prevalence of dyslipidemia (diagnosed based on total cholesterol ≥ 240 mg/dL, HDL cholesterol ≤ 40 mg/dL, LDL cholesterol ≥ 160 mg/dL, or triglycerides ≥ 200 mg/dL after 9-12 h of fasting)surrogate

Weekend catch-up sleep is associated with a lower risk of dyslipidemia in Korean male workers, suggesting that compensating for weekday sleep debt may have metabolic benefits.

Main Result

Effect estimate: OR 0.76 (95% CI 0.61-0.95)

Absolute Event Rate: 35.9% vs 42.9%

Limitations

Cross-sectional design cannot determine causality
Sleep time data from self-report questionnaires may be inaccurate
Potential unmeasured risk factors such as insomnia or lipid-affecting medications

Abstract

Within competitive sociocultural environments, most Korean workers are likely to shorten their sleep duration during the weekday. Short sleep duration is associated with dyslipidemia; however, studies on the correlation between various sleep patterns and dyslipidemia are still lacking. In hence this study aimed to investigate the association between weekend catch-up sleep (CUS) and dyslipidemia among South Korean workers. Our study used data from the 8th Korea National Health and Nutrition Examination Survey (KNHANES). The analysis covered 4,085 participants, excluding those who were diagnosed with dyslipidemia and not currently participating in economic activities. Weekend CUS was calculated as the absolute difference between self-reported weekday and weekend sleep duration. Dyslipidemia was diagnosed based on the levels of total cholesterol, high-density lipoprotein (HDL) cholesterol, low-density lipoprotein (LDL) cholesterol, and triglycerides in blood samples collected after 9-12 h of fasting. After adjusting for sociodemographic, economic, health-related, and sleep-related factors, a negative association of weekend CUS with dyslipidemia was observed in male workers (odds ratio: 0.76, 95% confidence interval: 0.61-0.95). Further, workers with total sleep duration of 7-8 h, night workers, and white-collar workers with CUS were at relatively low risk of dyslipidemia compared to the non-CUS group. Less than 2 h of weekend CUS was negatively related to dyslipidemia in Korean workers, especially males. This suggests that sleeping more on weekends for workers who had a lack of sleep during the week can help prevent dyslipidemia.

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