Laura Peeters

Trunk, head and pelvis interactions in healthy children | 55 3 Maximum range of motion tasks The maximum pelvis and trunk ROM when performing maximum trunk movement tasks are shown in Figure 3. In all movement directions, except for the trunk axial rotation task, the pelvis had a significantly larger contribution than all trunk segments (p<0.05). The pelvis and the lower thoracic segment had the largest contribution (i.e. significantly different from the other trunk segments (p<0.05)) in the axial rotation task, but were not significantly different from each other. The thoracic segments contributed more in the lateral trunk movement, compared to the lumbar segments. This difference was significant when comparing the lower lumbar segment with ROM [deg] 0 20 40 60 80 Flexion Lateral bending right Rotation right ROM [deg] -80 -60 -40 -20 0 20 Extension Lateral bending left Rotation left PEL LL UL LT UT Figure 3 Range of motion (ROM) for pelvis and various trunk segments in the frontal, sagittal and transverse plane, when performing a maximum trunk flexion, extension, lateral bending or axial rotation tasks, respectively. Boxes represent 25 th , 50 th and 75 th percentile, wiskers minimum and maximum of non-outlier values, and dots indicate outliers (greater than 1.5 times the interquartile range). Abbreviations: PEL pelvis, LL lower lumbar segment, UL upper lumbar segment, LT lower thoracic segment, UT upper thoracic segment.