Figure 5

The group means of the $imp{\ddot{\theta }}_{MUS}$ for the shoulder (A), elbow (B), wrist (C) and finger (D) joints at each loudness level. * p < 0.05, ** p < 0.01. The error bars represent ± 1 SE. A positive value indicates flexion for the shoulder and elbow joints, and extension for the wrist and finger joints (see arrows).