Highlights
– Objective accelerometer data in 13,547 older women show that meeting a modest threshold (≥4,000 steps/day) on even 1–2 days/week is associated with lower all‑cause mortality and lower incidence of cardiovascular disease (CVD).
– Increasing the daily step threshold (5000–7000) was linked to progressively lower mortality in a curvilinear fashion, but associations were attenuated after adjusting for mean daily steps, indicating total step volume largely mediates benefit.
