title: Exercise and osteoarthritis: are we stopping too early? findings from the Clearwater Exercise Study.
abstract: The value of exercise for people with knee osteoarthritis (OA) receives continuing consideration. The optimal length of study follow-up time remains unclear. A group of individuals with knee OA participating in an exercise intervention was followed for 2 years. The authors quantified the change in knee-pain scores during Months 1-12 and during Months 13-24. Eleven individuals with radiographic knee OA and knee-pain scores of 2+ were evaluated. Pain scores were collected weekly from participants who exercised three times a week. Participants demonstrated pain reduction during both time periods. Pain reduction during Months 13-24, -10.7%, was slightly higher than pain reduction during Months 1-12, -7.8%. Among people with knee OA who exercise, these findings suggest that knee-pain amelioration continues beyond 12 months. Clinicians should consider encouraging long-term exercise programs for knee-OA patients. To best characterize the effect of exercise on knee pain, researchers designing clinical trials might want to lengthen the studies' duration.
authors.affiliation: Wilder and Barrett are with the Arthritis Research Institute of America, 300 S. Duncan Avenue, Ste 240, Clearwater, FL 33755, USA.
authors.forename: Frances V
authors.initials: FV
authors.lastname: Wilder
authors.forename: John P
authors.initials: JP
authors.lastname: Barrett
authors.forename: Edward J
authors.initials: EJ
authors.lastname: Farina
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D015444:Exercise; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D008875:Middle Aged; D020370:Osteoarthritis, Knee / Q000534:rehabilitation*; D010147:Pain Measurement; D012107:Research Design; D013997:Time Factors