Who can participate?
We are currently recruiting people who are at least 50 years of age and have radiographically confirmed knee osteoarthritis. You must also have no inflammatory arthritic condition (for example, rheumatoid arthritis) and no history of knee replacement surgery. You must not have had recent oral or injected corticosteroid treatment, and must be able to walk without the use of a gait aid. Finally, you must not be currently in, or planning to commence within the next 4 months, a structured exercise program, including organized walking. This study is being conducted at the University of British Columbia in Vancouver, Canada and you would need to be able to come in for three 2.5-hour testing sessions, as well as eight 30-60 minute training sessions at the university over 5 months.
What is required?
You will be randomly assigned to one of two walking programs. Each intervention aims to increase walking and overall daily activity by the end of the 4-month program. Regardless of the group you are assigned to, you will be scheduled to visit UBC eight times (during weeks 1, 2, 4, 6, 8, 10, 12, and 15) in order to make sure that you are performing the walking activities properly, and that you are increasing walking time and distance safely. These sessions will last approximately one hour, during which time you will be asked to walk on a treadmill at a comfortable speed for approximately 30-60 minutes to assess your walking progression. At the beginning and end of the 4-month program, you will undergo a 2.5 hour testing session, where we will measure your walking mechanics, leg muscle strength, and performance on functional tasks. Another testing session will take place four weeks after the completion of the walking program.