Fig 1.
A schematic depiction of the perturbation protocol used.
Fig 2.
Equation used to calculate recovery performance (taken and modified from [16]); SL and SW are step length and step width, respectively, z represents anterior-posterior direction, x stands for mediolateral direction, ICLL is the initial contact of the leading limb, ICTL is the initial contact of the trailing limb and BD is the belt distance travelled while the leading limb is in swing phase.
Table 1.
Characteristics of participants.
Fig 3.
Boxplots of numbers of steps needed to return gait parameters to pre perturbation baseline (OACI = older adults with probable cognitive impairment; OACH = older adults, cognitively healthy; * = indicates significant difference (p < .05); for better visualization the y-axis starts at 6 instead of 0).
Table 2.
Number of recovery steps sorted by type of perturbation and trial.