Keywords: Upper limb kinematics; muscle activity prediction; motor control; Long Short-Term Memory; LSTM; end-effector kinematics; electromyography; EMG; biomechanical modeling; movement prediction; neural networks; rehabilitation; human-machine interaction; motion segmentation; swivel angle; kinematic redundancy; movement complexity; generalization; simple movements; complex movements; multi-joint movements; single-joint movements; upper limb movements