Fig. 2

Selected rehabilitation exercises for evaluation. The motion range and primary movement for each exercise were illustrated. Arrows and dotted lines indicate the direction of motion and rotation axis, respectively. In supine chin tuck head lift rotation (SCTHLR), two movements, neck flexion/extension and head rotation, are performed sequentially. Other exercises feature parallel movements, such as shoulder flexion and hip flexion in the dead bug unilateral isometric hold, making transitions between solid and transparent poses. The repetitive nature of all movements constitutes a full cycle, encompassing the transition from a solid pose to a transparent pose and back to a solid pose