Poster 328: Pre-Operative Low-Intensity Blood Flow Restriction Training Does Not Improve Quadriceps Strength or Hypertrophy After Anterior Cruciate Ligament Reconstruction

Objectives: The purpose of this study is to evaluate the effect low-intensity blood flow restriction (LI- BFR) training utilized in a pre-rehabilitative setting for patients undergoing anterior cruciate ligament reconstruction (ACLR) on postoperative outcomes by minimizing atrophy and impairment quadriceps. We hypothesize that strength hypertrophy quadriceps will be greater population undergoes preoperative LI-BFR than sham control (LI-SHAM) training. Methods: Twenty-eight subjects primary ACLR underwent 2 weeks either BFR intervention or SHAM at rate sessions per week before surgery. Quadriceps cross-sectional area were measured as well other exploratory after surgery 5 different time points surgery, through 6 months postoperative. was assessed handheld dynamometry leg press test using musculoskeletal ultrasound imaging. Results: Adjusting sex, time, strength/hypertrophy baseline, there no significant differences found between treatment groups endpoints. Compared 24-48 hours pre- op, suggests post-op average remains significantly lower 24 post-op, while similar dynamometer even larger test. Conclusions: A 2-week program may not effective improve ACLR.