How Does the Weekend Catch-Up Sleep Ratio Affect the Health and Lifestyle of Korean Adults? An Age- and Sex-Matched Study

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This study examined the impact of Catch-Up Sleep Ratio (CSR) on health outcomes in Korean adults. Adjusted for age and gender, 2,484 participants were categorized into three groups: Weekday (CSR <1.0), Average (1.0 ≤ CSR < 1.5), and Weekend (1.5 ≤ CSR). Weekday participants were less likely to meet WHO’s moderate physical activity guidelines (OR = 0.79, p < .05), walk 4–6 days per week (OR = 0.70, p < .05), or engage in prolonged sedentary behavior (OR = 0.60, p < .001). The Weekend group exhibited higher odds of obesity (OR = 1.96, p < .01), increased stress (OR = 1.78, p < .001), and perceived themselves as more obese (OR = 1.32, p < .01) while showing lower rates of low HDL cholesterol (OR = 0.66, p < .01). These findings suggest that CSR could significantly impact health behaviors and outcomes.