Abstract:

The adverse effects of occupational sedentary behavior（SB） on the fitness of office workers have garnered significant attention. However，existing reviews lack differentiation between occupational and leisure sedentariness，and consensus on physical activity（PA） interventions to mitigate SB-related risks remains elusive. This paper systematically reviews the definitions and classifications of SB，examines the differential health impacts of prolonged sitting durations（6，8，12 hours） on health，and synthesizes evidence of improvement of PA strategies（e.g.，step counts，exercise intensity，sedentary breaks）. Research has found that occupational SB is strongly associated with overweight/obesity（particularly in males），reduced muscle strength，and impaired mental health，while daily steps ≥7 000 or 30 minutes of moderate-to-vigorous PA significantly reduces all-cause mortality. The current research has problems such as conceptual ambiguity，sampling bias，and insufficient mechanistic exploration. Future research should employ randomized controlled trials to establish precise dose-response relationships between SB patterns and PA，integrating objective monitoring technologies to advance tailored health interventions.

Key words: Office workers, Physical activity, Occupational sedentary behaviors, Fitness