Fig. 9. (A) Axial versus bending strain components for the metacarpus and the radius during outdoor activities. Although axial strain components did not differ between bones, bending strain in the radius (white bars) was significantly greater than in the metacarpus (hatched bars). (B) The coefficient of variation (CV) of the axial and bending strain components for both bones during outdoor activities. Variability in axial strains was similar between bones, but the variability in bending strain was significantly greater in the straighter metacarpus versus the curved radius.