Introduction
knee dysfunction, quadriceps atrophy, injuries
More than 2 million anterior cruciate ligament (ACL) injuries occur worldwide each year [
The current guidelines recommend that ACLR patients train at 60–100% intensity with a single maximum repetition (1RM) load to increase muscle strength, explosiveness, and endurance [We implemented this pilot study to evaluate the effects of quadriceps training with different levels of blood flow restriction on quadriceps strength and thickness of participants after ACLR. Additionally, the feasibility of the experiment will also be assessed. It was hypothesized that a combination of BFR and low-intensity quadriceps strength training can effectively improve the quadriceps atrophy, decreased muscle strength, and knee dysfunction that occurs in patients during mid-postoperative ACLR. Additionally, we investigated whether the level of BFR contributes to the variability in treatment outcomes.