Comparing Blood Flow Restriction Resistance Training and Cycling on Pain and Strength in Athletes with Patellofemoral Pain Syndrome

What this Trial Is About

Researchers are evaluating two blood flow restriction BFR training methods for athletes aged 18 to 40 years who have patellofemoral pain syndrome, a common knee condition. This randomized controlled trial compares BFR resistance training using leg press and seated knee extension exercises with BFR cycling at low resistance. The study aims to assess the effects of these two approaches on knee pain, quadriceps strength, and functional ability over an 8-week period. Participants are randomly assigned to either the BFR resistance training group or the BFR cycling group. The resistance training involves leg press and seated knee extension at 30% of one-repetition maximum 1RM, performing 1 set of 30 repetitions plus 3 sets of 15 repetitions, three times a week for 8 weeks. The cycling group performs stationary cycling in intervals of 4 sets of 5 minutes at 70-80 revolutions per minute, also three times per week for 8 weeks. Both groups use a pneumatic cuff set to 80% limb occlusion pressure on the proximal thigh during sessions, which are supervised one-on-one by a physiotherapist. Participants are assessed at the start and end of the 8-week intervention for pain intensity using the Numeric Pain Rating Scale, quadriceps strength with a handheld dynamometer, and functional ability using the Kujala Anterior Knee Pain Scale. Training progress is monitored with load adjustments for resistance training and cadence changes for cycling. The study uses a single-blinded design where outcome assessors are unaware of group assignments. The total participation covers the 8-week treatment with evaluations at baseline and post-intervention to measure changes in pain, strength, and function.

Comparative Effects of Blood Flow Restriction Resistance Training Versus Blood Flow Restriction Cycling on Pain, Quadriceps Strength, and Functional Outcomes in Athletes With Patellofemoral Pain