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Figure 2. Group means and standard deviations of the muscle and joint forces illustrated for the participants’ right side. Data for identical tasks (see text) of the left and right sides are pooled. Best-fitting (
) and worst-fitting (
) cases are also depicted. (A) Muscle and joint forces calculated with in vivo data (n = 10). (B) Muscle and joint forces computed with minimization of elastic energy as an objective function (n = 10). For (A) and (B): lFl/lFresl = forces as a fraction of the resultant force Fres = 150 N; 
= angle of the resultant force in the horizontal plane; different shades of bar plots (left to right) encode angle 
= 0°, 20°, 40°, 60°; motor task = 180°/ = 60° is not illustrated (see text).
