Associations Between Physical Activity Frequency, Handgrip Strength, and Limitations in Activities of Daily Living in Middle-Aged and Older Adults with Widespread Pain: A Cross-Sectional Study Using Data from the SHARE Project.

Background: The increase in life expectancy has led to a higher prevalence of chronic conditions, including widespread pain (WP), which often compromises functional independence and quality of life in older adults. WP is strongly associated with limitations in Basic and Instrumental Activities of Daily Living (BADLs and IADLs). While physical activity (PA) and muscle strength (handgrip) are known to enhance general health, their specific role in preserving functional capacity in individuals with WP remains underexplored. Methods: This cross-sectional study analyzed data from 1154 adults aged 50-80 reporting WP, drawn from the Ninth Wave of The Survey of Health, Ageing and Retirement in Europe (SHARE). Associations between moderate and vigorous PA (MPA and VPA), handgrip strength (HGS), and limitations in BADLs and IADLs were examined using multivariate logistic regression, adjusting for demographic and health-related variables. Results: Lower MPA was significantly associated with greater odds of all BADL and most IADL limitations, while VPA had no significant associations. Higher relative HGS was significantly associated with lower odds of limitations in BADLs and IADLs. Conclusions: Among older adults with WP, MPA and muscular strength appear to reduce the risk of functional limitations. These findings highlight the relevance of promoting sustainable strategies to support independence in aging populations.