Fig. 1

Box plot of gait speed estimates for 10-s epochs in daily life. For all individual participants, the ranges from minimum to maximum (vertical lines), the 25th to 75th percentiles (black rectangles) and the median (black horizontal lines) are shown. The grey rectangles indicate 90 % to 110 % of the treadmill speed estimated by the estimator used for daily life data, which was the range used for the speed-matched analysis. For reference, the treadmill speed setting (1.2 m/s) is plotted as a horizontal grey line