This is a cohort study examining the changes in the muscle that occur following ACL injury and reconstruction. This study aims to determine if significant changes to the muscles properties occur as a result of the graft taken for ACL reconstruction, and whether or not these changes serve as a risk factor for further injuries. This study will examine the muscles ability to use oxygen non-invasively, an important determinant of muscle endurance and allow for comparisons of this between individuals with ACL-reconstruction surgery and healthy, non-injured adults.

Participants will have their leg muscle strength and endurance measured using common clinical techniques used in physical medicine and rehabilitation sciences. They will also have their mitochondrial capacity assessed through the skin using a non-invasive procedure.

$60.00