A Rationale: Sit-ups and leg lifts will help to strengthen the muscles that support the back. Flexion of the hips and knees places less strain on the back. Modifications in the way the patient lifts boxes are needed, but sitting for prolonged periods can aggravate back pain. The patient should not lift above the level of the elbows. Cognitive Level: Application Text Reference: p. 1677 Nursing Process: Evaluation NCLEX: Health Promotion and Maintenance More test answers on https://studyhippo.com/musculoskeletal-nclex-practice-questions/