Associations of physical activity and sedentary behavior with chronic low back pain in middle-aged and older adults: a cross-sectional study.

The prevalence of chronic low back pain (CLBP) among community-dwelling adults aged ≥45 years was 16.1%.

• Cross-sectional survey conducted among 472 community-dwelling adults aged ≥45 years
• Participants were recruited from communities in Binhai County, Yancheng City, Jiangsu Province, China
• CLBP was defined as low back pain occurring almost daily for ≥3 months

Meeting physical activity guidelines was significantly associated with a lower risk of CLBP in middle-aged and older adults.

• Adjusted OR = 0.218, 95% CI: 0.116–0.410
• Physical activity was assessed using the IPAQ-short form
• Association remained significant after adjustment for sociodemographic, lifestyle, and health-related covariates

Sedentary behavior was independently associated with a higher risk of CLBP.

• Adjusted OR = 2.720, 95% CI: 1.562–4.738
• Sedentary behavior was assessed using the IPAQ-short form
• Association was independent of physical activity levels and other covariates

Stratified analyses showed consistent associations between physical activity, sedentary behavior, and CLBP across multiple subgroups.

• Subgroups examined included those defined by sex, residence, marital status, lifestyle factors, and chronic diseases
• No significant interaction effects were detected across any of the stratified subgroups
• Associations were described as consistent across all subgroups examined

Associations between physical activity, sedentary behavior, and CLBP were examined using chi-square tests and multivariable logistic regression models.

• Study design was cross-sectional
• Sample consisted of 472 community-dwelling adults aged ≥45 years
• Sociodemographic, lifestyle, and health-related factors were collected as covariates in the multivariable models