Age-Specific Relationship between Prolonged Sedentary Time and Low Handgrip Strength: Stronger Impact Among Young Korean Workers (KNHANES 2016-2019)

초록

OBJECTIVE: This study examined the relationship between sedentary time and handgrip strength with age-group stratification. METHODS: This study used 11,295 Korean workers. Participants were divided into two age groups: ≤39 and ≥ 40 years. Handgrip strength was measured, and sedentary time was self-reported. Multiple logistic and linear regression models were used to examine the association between sedentary time and handgrip strength. RESULTS: Those with ≥6 hours of daily sedentary time had slightly higher odds of low handgrip strength, though not significant overall (OR 1.09, 95% CI 0.95-1.26). However, younger adults with high sedentary time showed significantly higher odds (OR 1.55, 95% CI 1.13-2.12). Linear regression also indicated a stronger negative association in younger adults. CONCLUSIONS: Interventions to reduce sedentary time could help maintain muscle strength, especially in younger populations. Copyright © 2025 American College of Occupational and Environmental Medicine.

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