Accelerometer-assessed sedentary behaviour among Chinese rural older adults: Patterns and associations with physical...

Area of Science:

• Gerontology
• Public Health
• Epidemiology

Background:

• Sedentary behaviour is a significant risk factor for adverse health outcomes.
• Limited research exists on sedentary behaviour patterns in rural older adults.
• Understanding these patterns is vital for targeted health interventions.

Purpose of the Study:

• To investigate the distribution and associated factors of sedentary behaviour in rural older adults.
• To examine the relationship between sedentary behaviour patterns and physical function in this demographic.

Main Methods:

• A population-based study of 2096 rural older adults (≥60 years) from the MIND-China Study.
• Accelerometer-measured sedentary time, bout durations, and breaks over 7 days.
• Physical function assessed using the Short Physical Performance Battery (SPPB).

Main Results:

• Participants spent 58.8% of waking hours sedentary, with nearly half in bouts ≥30 minutes.
• Men accumulated more sedentary time than women; women had more short sedentary bouts.
• Prolonged sedentary time and fewer breaks correlated with poorer physical function, balance, strength, and walking speed (all P < 0.001).

Conclusions:

• Prolonged sedentary behaviour and infrequent breaks are prevalent in rural older adults.
• These sedentary patterns are significantly associated with diminished physical function in this population.
• Interventions promoting reduced sedentary time and increased movement breaks are warranted for rural elderly health.