Quadriceps strength, knee range of motion, and gait were measured in such testing as timed up and proceed, stair climbing and a six-minute walk. The group in the progressive strength-training system demonstrated significant improvement in quadriceps strength and practical performance. In addition they demonstrated substantially better quadriceps strength and useful performance after 12 weeks compared to the group that underwent regular rehabilitation.All rights reserved.. Alarm over death in clinical trial for arthritis therapy The death of a female getting involved in a clinical trial for an arthritis therapy has set alarm bells ringing in the usa. The 36 year older Illinois female died on July 24th from inner bleeding and organ failing after receiving the next injection of an experimental gene therapy treatment to take care of her rheumatoid arthritis. Jolee Mohr, who has a 5-year-old daughter, took component in the scholarly research because she believed it could help the rheumatoid arthritis which affected her entire body.