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Current guidelines recommend that adults get ≥150 minutes weekly of moderate-intensity physical activity or 75 minutes weekly of vigorous-intensity physical activity to gain substantial health benefits. However, many older adults find it difficult to achieve this duration of moderate-to-vigorous physical activity (MVPA). In this meta-analysis of nine cohort studies, researchers assessed the effects of lower-dose MVPA on all-cause mortality in 122,000 older adults (age, ≥60; mean age, 73). Weekly physical activity was measured in Metabolic Equivalent of Task (MET) minutes.
After mean follow-up of 10 years, 18,000 participants (15%) had died. Adjusted for multiple variables, risk for death from all causes was significantly lower among particip…