Inclusion Criteria:  Have completed all other formal physical therapy Are between the ages of 18 and 35 Underwent an ACLR between 6 and 24 months prior to enrollment. Demonstrate underloading during gait (vGRF- impact peak <1.09 x BW) Demonstrate clinically relevant-knee symptoms (KOOS-QOL <72) Have undergone ACLR surgery  Exclusion Criteria:  ACLR revision surgery A multiple ligament surgery A lower extremity fracture Knee osteoarthritis The participant has a BMI ≥ 36.