Posture alteration as a measure to accommodate uneven ground in able-bodied gait

Data-set collected from 12 participants contains: The ensemble average of following parameters of interest, in addition to their angular trajectories throughout stance phase of each individual step, were determined in the sagittal plane: 1) hip, knee and ankle joint angles at the instants of TD and TO (ankle: dorsiflexion and plantarflexion); 2) effective leg length, defined as the length between the hip and CoP; 3) vertical position of the CoM relative to the ground determined by the body segmental analysis method relative to the laboratory coordinate system throughout the stance phase; 4) leg angle, angle between effective leg and ground was calculated with respect to the negative x-axis. The effective leg length and CoM were both normalized to the distance between the greater trochanter marker and the lateral malleoli marker at the instant of TD. Backward rotation during step-down was calculated as the difference of the maximum of the trunk angle in the pre-perturbation step and the minimal trunk angle in perturbation step (step-down).

Each column lists the mean value of variable of interest pertaining 12 participants. The dataset is arranged for the performance of a two-way repeated measures ANOVA to examine the effects of the posture (regular erect, 30° and 50° of trunk flexion from the vertical) and step (level step, pre-perturbation step, step-down, step-up).

Zero values within the Exel file represent NaN.

For understanding the names (i.e., abbrev./codes) given to the variable, please refer to 'read me' file.