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Elastic and viscoelastic (the Voigt) model fitting results in the form of box plots for stroke-affected muscles (red) and non-affected muscles (blue) with statistical significance (*), p < 0.05. (a) Pure elastic model. (b) Viscoelastic (the Voigt) model: shear elasticity data. (b) Viscoelastic model: shear viscosity data. (d) Viscoelastic model: time constant (τ = η/E) data.
