Fig. 3

K-means clustering results for self-selected (A) and fast (B) gait speeds. Individual scores for principal component 1 vs. principal component 2 are plotted to allow for visualization of two out of seven dimensions of the data included in the cluster analysis. Due to missing hip hiking data, three neurotypical participants were excluded from the k-means analysis. Marker colors represent the true group for the individual (black: neurotypical, red: post-stroke). The marker shape represents the assigned cluster (diamond: neurotypical gait behavior cluster, circle: stroke gait behavior cluster). Two participants post-stroke switched clusters at faster gait speeds. One participant moved from the neurotypical gait behavior cluster to the stroke gait behavior cluster (cyan marker), and one participant moved the opposite way (royal blue marker)