[Mechanisms involved in the effect of aerobic exercise on knee osteoarthritis].

With the aging of the population, the incidence of knee osteoarthritis (KOA) is increasing year by year. Exercise is one of the none medicine therapies in KOA rehabilitation. When making proper KOA exercise prescription, it's necessary to consider about the mechanisms involved in the interaction between exercise and articular cartilage, and obey the principle of choosing right programs, moderate frequency and intensity avoiding the injury of articular cartilage. The standard of KOA sport prescription is still controversial, so the mechanisms involved in the effect of aerobic exercise on protecting and damaging the articular cartilage need further research.