Figure 2 Footprint images of the representative healthy male collegiate student (A) and male elite squash player (B). The representative participant was selected based on the average plantar load values across 6 subregions of the feet from all participants. The load distribution in each plantar region is visualized in both 2-dimensional and 3-dimensional footprint images, accompanied by a color scale bar. The intensity of plantar pressure is represented using a gradient color scheme, ranging from light blue (indicating lower pressure) to dark red (indicating higher pressure). White arrows are used to highlight regions with concentrated plantar loads. (Figures were measured and presented using an optical plantar pressure analyzer combined with the built-in FPDS-Pro-V.2 program, View Grand International Co, Ltd, Taiwan).