Optimism predicts sustained vigorous physical activity in postmenopausal women.

This association became marginally significant after accounting for demographic characteristics (Model 2, OR for most vs. least 0.93, 95% CL 0.86–1.00, p = 0.05; OR for mid-high vs. least 0.82 and OR for mid-low vs. least 0.85 with p < 0.01 for both) and past vigorous PA (Model 3, OR 0.92 for most vs. least, 95% CL 0.86–0.99, p = 0.02; OR for mid-high vs. least is 0.88 and is significant at p < 0.001; OR for mid-low vs. least not significant), but was no longer significant after accounting for health-related covariates ( Table 2 ).

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