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Fig. 6. Resilience (R) as a function of frequency at amplitudes of 0.1
(circles), 0.5 (squares) and 1.0 mm (triangles). (A) Fixed-coxa resilience was
significantly greater than (B) free-coxa resilience. (C) Using tan(
) to
calculate resilience (black line and open circles) overestimates the actual
values (gray line and filled circles) and produces an inverse dependence on
frequency because the calculation is based on a linear model. While leg data
are well fit by a linear model, the leg data are not linear, and care should
be used when applying linear calculations to any biomaterial.