Mixed
Blood flow restriction (BFR) training using low loads (30% 1RM) significantly improves quadriceps and hamstring muscle strength and physical function in the early postoperative period (up to 12 weeks) following anterior cruciate ligament (ACL) reconstruction compared to conventional high-load resistance training (70% 1RM).
If you have recently had ACL surgery, you do not need to lift heavy weights immediately to rebuild your leg strength. Using Blood Flow Restriction (BFR) with light weights (30% of your max) twice a week for 12 weeks can actually build your quadriceps and hamstrings faster and with less pain than traditional heavy lifting. This approach helps you regain function and reduces pain early on, provided you follow your surgeon's clearance protocols.
The blood flow restriction has proved to be efficient for improving muscle strength of the quadriceps, hamstrings and physical function of the knee after reconstruction of the anterior cruciate ligament in early rehabilitation.
Why this rating
Randomized controlled trial with clear allocation, though sample size is small (n=28) and follow-up is limited to 12 weeks.
Source
Comparison of quadriceps and hamstring muscle strength after exercises with and without blood flow restriction in the postoperative period of the anterior cruciate ligament: a randomized controlled trial.
Rafael Francisco Vieira de Melo et al. · Research Square · 2021
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