Figure 6

The 24 variables included were the Sternocleidomastoid (SCM), Longus capitis (Lcap) and Longus colli (Lco); the deformation area (% deformation) and deformation rate (% deformation/s) throughout the first and tenth arm elevation; the area of total muscle deformation; the areas of shortening and elongation deformation; [3 muscles (SCM, Lcap, Lco) × 2 conditions (deformation and deformation rate) × 3 variables (total deformation, shortening and elongation = 24].