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Change/stability in steps/day (cut at 7,500 steps/day) by sex and age category. Stably inactive < 7,500 steps/day; decreased activity (moved from ≥ 7,500 to < 7,500 steps/day between T1 and T2); increased activity (moved from < 7,500 to ≥ 7,500 steps/day between T1 and T2); and, stably active ≥ 7,500 steps/day at both time points.
