Physical Activity and Sedentary Behavior Differ by Sex during the First 6 Months after Anterior Cruciate Ligament Reconstruction

PA levels increased in females and males from 2 to 4 months after ACL reconstruction but not between other consecutive time points from before through 6 months after surgery. Females completed less PA and spent more time in sedentary behavior than males and may require greater monitoring to improve PA after ACL reconstruction. The disparity in PA and sedentary behavior across sex follows consistent previous findings that outcomes after ACL reconstruction are poorer in females compared with males.