Laura Peeters

The trunk in spinal musclar atrophy | 103 5 Figure 2 Rotation angles and muscle activity for active range of trunk motion tasks. A) Maximum trunk rotation angle when performing a maximum flexion (FLEX), extension (EXT), lateral bending (LAT) or axial rotation (ROT) movement. Lateral bending and axial rotation are mean values towards dominant and non dominant side. B) Maximum muscle activity levels when performing a maximum flexion, extension, lateral bending to dominant side and axial rotation to dominant side movement. Abbreviations: LO = longissimus, IC = iliocostalis, EO = external oblique, D = dominant side, ND = non dominant side, * p<0.05, ** p<0.01 -100 -50 0 50 100 150 ** ** ** ** Trunk rotation angle [deg] FLEX EXT LAT (D,ND) ROT (D,ND) A) Healthy SMA 0 100 200 300 ** ** B) FLEX ** ** ** EXT 0 100 200 300 ** ** Muscle activity [% of MVIC] LO D LO ND IC D IC ND EO D EO ND LAT D ** * * LO D LO ND IC D IC ND EO D EO ND ROT D