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Individuals with a history of anterior cruciate ligament (ACL) injury and have had an ACL reconstruction (ACLR) are at a greater risk for developing osteoarthritis. The greater risk for developing osteoarthritis is likely caused by too little force or physical activity applied to the knee during weightbearing tasks such as walking. To reduce this decrease in forces during walking following an ACLR, we must first develop effective treatments that can train a person to walk in a way that reduces their risk of developing osteoarthritis. The purpose of this research study is to determine the feasibility and the initial effects of a 6-week training program designed to improve walking mechanics of individuals with an ACL reconstruction.