Fig 1.
Images of trips on the walkway that induced an (A) elevating, (B) lowering recovery strategies, and (C) treadmill accelerations.
Table 1.
Key participant demographics and baseline spatiotemporal parameters of gait stratified by gender.
Data are mean (standard deviation).
Fig 2.
Kinematic data for one previous (Pre) and five recovery (Post1-5) steps following a treadmill acceleration (orange) and walkway (W) trip inducing elevating (blue) and lowering (green) strategies (n = 38).
Presented are (A) margin of stability (MoS), (B) extrapolated centre of mass (xCoM), (C) maximum centre of mass anteroposterior velocity (Max. CoM AP Vel), (D) step length and (E) maximum toe clearance (Max. Toe Clearance). Coloured dots represent individual datapoints. Bold coloured bars and vertical error bars are the average and 95% confidence intervals, respectively. Asterisks represent significant differences (* P<0.05, ** P<0.01, *** P<0.001) between the value of the step of interest on the walkway and the value of the corresponding step on the treadmill.
Fig 3.
Trunk angle following a treadmill acceleration (orange) and walkway (W) trip inducing elevating (blue) and lowering (green) strategies (n = 38).
Time was normalised to previous (Pre) and recovery (Post1-5) steps. Vertical dashed lines represent perturbation onsets (i.e., a foot contact to the accelerated belt or the trip-board). Bold lines and shaded bands are average and 95% confidence intervals, respectively.
Fig 4.
Maximum angle of the (A) Trunk, (B) Hip and (C) Knee for one previous (Pre) and five recovery (Post1-5) steps following a treadmill acceleration (orange) and walkway (W) trip inducing elevating (blue) and lowering (green) strategies (n = 38). Coloured dots represent individual datapoints. Bold coloured bars and vertical error bars depict the average and 95% confidence intervals, respectively. Asterisks represent significant differences (* P<0.05, ** P<0.01, *** P<0.001) between the value of the step of interest on the walkway and the value of the corresponding step on the treadmill.