-------------------------------------------------------------------------------------------------- Primary Publications Associated With These Data: -------------------------------------------------------------------------------------------------- Article: “Humans Use Multi-Objective Control to Regulate Lateral Foot Placement When Walking” Authors: Jonathan B. Dingwell, Joseph. P. Cusumano Journal: PLoS Computational Biology, In Press. Year: 2019 Article DOI: [TBD] Contact: dingwell@psu.edu jdingwell68@gmail.com Pennsylvania State University -------------------------------------------------------------------------------------------------- DESCRIPTION OF DATA AND DATA FILES: -------------------------------------------------------------------------------------------------- Subjects: Healthy "Able-Bodied" ("AB") Group: N = 13, 10M / 3F, Age 24.8 +/- 6.92 Yrs Trans-Tibial Amputee ("TT") Group: N = 8, 8M / 0F, Age 30.4 +/- 7.15 Yrs What Subjects Did: Walk on a Motorized Treadmill 3 Conditions: "NOP" = No Perturbations; "VIS" = Visual Field Perturbations; "PLA" = Platform Perturbations [See papers below for exact definitions / descriptions] Number of Trials For Each Condition: 5 (15 Trials / Subject Total) Each Trial was 3 Min long. Motion capture data (Vicon) data for full duration of each trial. Step Data were extracted from raw motion capture data (see publications for details). The Data: Two file types are provided: Matlab *.mat files and standard *.csv files Matlab *.mat files: One *.mat file for each subject: "AB01.mat"-"AB13.mat" and "TT01.mat"-"TT10.mat" [NOTE: Subject #'s are not all consecutive] Each *.mat file contains 15 5-column matrices, one for each trial: "NOP1" is "NOP Condition, Trial 1", etc Each matrix contains 5 columns, as follows: Col 1 = "zL" = Left Foot Position [m] Col 2 = "zR" = Right Foot Position [m] Col 3 = "zB" = Body Position [m] Col 4 = "DzB" = Change (Delta) in Body Position (aka "Heading") [m] Col 5 = "w" = Step Width [m] NOTES: z = 0 defined the center of the treadmill Each row in each matrix corresponds to 1 step zL & zR values "repeat" across 2 rows each as each foot placement is associated with 2 consecutive steps (i.e., first as leading leg, then as trailing leg). Comma-Delimited ASCII Text (*.csv) files: One *.csv file for each subject: "AB01.csv"-"AB13.csv" and "TT01.csv"-"TT10.csv" Each *.csv file contains step data for all trials for that subject Each *.csv file has 75 total columns: 5 for each trial, times 15 total trials Trials and variables for each column are labeled in the first 2 rows of each *.csv file Naming conventions for trials and variables are both same as above -------------------------------------------------------------------------------------------------- Other Publications Associated with the Parent Study From Which These Data Originated: -------------------------------------------------------------------------------------------------- Beurskens R, Wilken JM, Dingwell JB. (2014) "Dynamic Stability of Superior vs. Inferior Body Segments in Individuals with Transtibial Amputation Walking in Destabilizing Environments" Journal of Biomechanics; 47(12):3072-9. doi: http://dx.doi.org/10.1016/j.jbiomech.2014.06.041 Beurskens R, Wilken JM, Dingwell JB. (2014) "Dynamic Stability of Individuals with Transtibial Amputation Walking in Destabilizing Environments" Journal of Biomechanics; 47(7):1675-81. doi: http://dx.doi.org/10.1016/j.jbiomech.2014.02.033 Beltran EJ, Dingwell JB, Wilken JM. (2014) "Margins of Stability in Young Adults with Traumatic Transtibial Amputation Walking in Destabilizing Environments" Journal of Biomechanics; 47(5):1138-43. doi: http://dx.doi.org/10.1016/j.jbiomech.2013.12.011