We will randomize 200 patients who have sustained a primary unilateral hip fracture to the multiple-component intervention program of patient education and high-intensity strength training or to standard medical care. The intervention program will comprise four major components: (1) an in-hospital postoperative patient instruction protocol conducted prior to discharge with the patient and a family member or caregiver; (2) a hospital-based, 8-week program of high-intensity isokinetic strength training for patients; (3) an at-home walking program designed to enable patients to maintain strength and physical activity following the hospital-based portion of the intervention; and (4) supportive telephone calls through which patients and their families or caregivers will have regular and ongoing contact with a hospital-based interventionist, as well as other hip fracture patients.