Key result
Low-load resistance training with blood flow restriction resulted in a non-significant 32.9 mmHg reduction in limb occlusion pressure over 9 weeks in patients with knee osteoarthritis.
Why the study?
This pilot study investigated adaptations in limb occlusion pressure and blood pressure comparing low-load resistance training with blood flow restriction to traditional moderate-load training in knee osteoarthritis patients.
Does low-load blood flow restriction training alter limb occlusion pressure and blood pressure compared to moderate-load training in patients with knee osteoarthritis?
RCT (n=17)
Double-blind
Balanced block permutations
No
Does low-load blood flow restriction training alter limb occlusion pressure and blood pressure compared to moderate-load training in patients with knee osteoarthritis?
Mean Difference: -32.9 (95% CI -68.9–3.2)
Absolute Event Rate: -32.9% vs -17.2%
p-value: p=>0.05
Limb occlusion pressure remains stable throughout a 9-week low-load blood flow restriction rehabilitation program in knee osteoarthritis patients, potentially reducing the need for frequent reassessment.
BFR training does not significantly alter LOP or BP in knee OA; supports less frequent reassessment and extends safety data for low-load protocols.
Objective: This pilot study investigated potential adaptations in limb occlusion pressure (LOP) and compared LOP between low-load resistance training with blood flow restriction (LL-BFR) and traditional moderate-load training (ML) over 9 weeks in patients with knee osteoarthritis (KOA). Secondarily, we compared systolic blood pressure (SBP) and diastolic blood pressure (DBP) adaptations between these groups. Methods: Seventeen KOA patients were randomly assigned to the LL-BFR or ML groups. The LL-BFR group performed 75 repetitions (10% 1RM; 60% of LOP). The ML group performed 24 repetitions (60% 1RM; 10% [SHAM] of LOP). In both groups, exercises involving LOP were bilateral hack machine squat and knee extension exercises. LOP, SBP, and DBP were measured before and every 3 weeks until the ninth training week. Results: After 9 weeks, there were no statistically significant changes in LOP, SBP, or DBP within or between groups. LOP decreased by -32.9 mmHg (95% CI: -68.9 to 3.2) in LL-BFR and -17.2 mmHg (95% CI: -49.0 to 14.6) in ML, achieving clinical significance [relative error variance (REV) = 14.6 mmHg]. SBP decreased by -7.5 mmHg (95% CI: -15.6 to 0.6) in LL-BFR and -1.1 mmHg (95% CI: -8.2 to 6.0) in ML. DBP decreased by -3.7 mmHg (95% CI: -9.2 to 1.7) in LL-BFR and -1.9 mmHg (95% CI: -6.8 to 2.9) in ML. Conclusion: We observed a non-significant trend toward a reduction in LOP following 9 weeks of LL-BFR in patients with KOA, with a mean point estimate that exceeded a pre-defined threshold for clinical significance, although the wide confidence intervals indicate substantial uncertainty. Furthermore, SBP and DBP showed no significant changes, and no group differences emerged across outcomes. Practically, these findings suggest that LOP remains stable throughout a rehabilitation program, potentially reducing the burden of frequent LOP reassessment in clinical LL-BFR applications. Trial registration: https://ensaiosclinicos.gov.br/rg/RBR-6pcrfm/.
No takes yet. Share an insight, caveat, or question.
Cerqueira et al. (2026) conducted an RCT in Knee osteoarthritis (n=17). Low-load resistance training with blood flow restriction (LL-BFR) vs. Traditional moderate-load training (ML) with sham BFR was evaluated on Change in limb occlusion pressure (LOP) at 9 weeks (MD -32.9 mmHg, 95% CI -68.9 to 3.2, p=>0.05). Low-load resistance training with blood flow restriction resulted in a non-significant 32.9 mmHg reduction in limb occlusion pressure over 9 weeks in patients with knee osteoarthritis.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: