“…Keywords: ACL, ACL reconstruction, contralateral, football, functional performance, knee, patient-reported outcome measures, return to sport, return to play, revision, soccer, subsequent injury ISBN: 978-91-7685-736- 6 LIST OF PAPERS Motivation Consist of two parts; intrinsic, which refers to doing an activity for the satisfaction of the activity itself and extrinsic, which refers to doing an activity in order to attain some separable outcome [187] Neuromuscular A complex interaction between the nervous system and control the musculoskeletal system leading to the ability to produce controlled movement through coordinated muscle activity [234] Postural control The act of maintaining, achieving or restoring a state of balance during any posture or activity [173] Introduction…”