Health Behaviors and Chronic Conditions Mediate the Protective Effects of Masculinity for Physical Performance in Older Adults.

OBJECTIVE: We estimated the 2-year incidence of poor physical performance according to gender roles and examined mediating pathways related to health behaviors and chronic conditions.

METHOD: Data are from the International Mobility in Aging Study ( n = 1,676). The Bem Sex Role Inventory was used to classify participants into four gender roles as "masculine," "feminine," "androgynous," and "undifferentiated."

RESULTS: We found a higher incidence of poor physical performance among participants endorsing the feminine (adjusted incidence rate ratio [IRR] = 2.36, 95% confidence interval (CI) = [1.55, 3.60]) or the undifferentiated role (adjusted IRR = 2.19, 95% CI = [1.45, 3.30]) compared with the androgynous role. Smoking, physical activity, the number of chronic conditions, high body mass index, and depression were mediators of this association but not alcohol consumption.

DISCUSSION: This study provides evidence that gender roles are independently associated with physical performance. Health behaviors and chronic conditions are mediators of the relationship between gender roles and lower extremity physical function.