Take a look at the research
- In 2005 British researchers evaluated 13 randomised clinical trials that compared walking, muscle strengthening exercises, and conventional therapy without exercises in patients with osteoarthritis of the knee. The results suggested both walking and muscle-strengthening to be safe methods of reducing pain and disability.
- A study involving 5,200 residents of Framingham, found no link between exercise and arthritis of the knee. It also showed exercise was as friendly to the knees of joggers as walkers, even though jogging subjects the lower body to much higher impact and stress than walking.