Figure 5

Electromyograpic (rmsEMG) amplitude (%) of the sternocleidomastoid (SCM), splenius (SPL) muscle at the accelerative and decelerative phase of the three different speed conditions (S (slow), P (preferred) and M (maximum)) for the flexion back to neutral position (upper panels) and extension back to neutral position (lower panels) movements for the WAD (filled circles, n = 15) and control (open circles, n = 15) groups. The data are average and error bars standard deviation. Statistically significant group differences; * p < 0.05, ** p < 0.01, ***, p < 0.0005. Note the differences in Y axis scaling among the separate test conditions.