Figure 9

Weighting coefficients (W _S1 to W _S8 ) and temporal activations (H _S1 to H _S8 ) for all eight muscle synergies identified during the study. The black bars representing weighting coefficients show the set of reference muscle synergies derived by pooling together the EMG data for all WS conditions (see text for details). Weighting coefficients are shown for each arm WS conditions (C1 to C6). Temporal activations are shown for C1, C2 and C6; they are averaged across subjects and targets. The data is shown for the following muscles: triceps brachii – TRI; biceps brachii short head – BICS; biceps brachii long head – BICL; brachialis – BRA; brachioradialis – BRAD; pronator teres – PRO; infraspinatus – INFRA; latissimus dorsi – LAT; upper trapezius – TRAP; rhomboid major – RHO; pectoralis major – PEC; anterior deltoid – DANT; medial deltoid – DMED; and posterior deltoid – DPOS.