Objective: The aim of this study was to investigate whether an index of overall cardiovascular health (CVH) is associated with disability in older individuals. Method: Data on 925 participants of the InCHIANTI study (Invecchiare in Chianti, aging in the Chianti area, ≥65 years, 55% women) with median follow-up of 9 years were used. CVH score was assessed by smoking status, physical activity, body mass index, diet quality, blood pressure, plasma cholesterol, and fasting blood glucose. Disability was examined using instrumental activities of daily living (IADL disabilities >0 vs. 0) and activities of daily living (ADL disabilities >0 vs. 0). Generalized estimating equations and Cox models assessed relationships between baseline CVH with disability and worsening over 9 years. Results: A 1-point increase in the CVH score was associated with 23% and 17% of lower odds of ADL (p < .001) and IADL (p < .001) disability and was protective of worsening of disability over 9 years. Cox models demonstrated that a 1-point increase in CVH score was associated with lower hazards of both ADL (hazard ratio [HR] = 0.86, p = .005) and IADL (HR = 0.91, p = .007) disability. Discussion: Among older individuals, better CVH was associated with lower risk of disability and worsening over 9 years.
Keywords: ADL; IADL; InCHIANTI study of aging; worsening disability.