But if you choose not to run, consider walking fast. A detailed meta-analysis of nine previous longitudinal cohort studies of adults aged 65 and older found that gait speed is the index that correlates strongest with survival. A speed exceeding 0.8 m/s predicted longevity exceeding the median for age and sex.7 So rest easy, Sir Mick. I clocked you at an impressive 2.6 m/s onstage. Keep on rocking!
Dr. Helfgott is physician editor of The Rheumatologist and associate professor of medicine in the division of rheumatology, immunology, and allergy at Harvard Medical School in Boston.
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