A 20 Year-Old Male Patient with C-7 Incomplete Spinal Cord

A 20 year-old male patient with C-7 incomplete spinal cord injury has residual weakness in his triceps muscles bilaterally that is affecting his ability to stabilize and support body load while ambulating with Loftstrand crutches on level surfaces.The therapist is designing a strengthening exercise to address this problem.Which of the following exercises best represents the application of the principle of specificity of training for this patient's needs?

A) Performing concentric full range of motion (ROM) elbow extension with use of Theraband resistance in sitting position.
B) Perform moderate resisted bilateral upper extremity (UE) motions on incline press machine in supported sitting position.
C) Performing small range full body push-ups in sitting with hands positioned on push-up blocks.
D) Perform proprioceptive neuromuscular facilitation (PNF) D-1 flexion/extension exercise;slow reversals against the therapist's manual resistance in supported sitting.