Benefits of Resistance Training with Blood Flow Restriction in Knee Osteoarthritis

2018 ◽  
Vol 50 (5) ◽  
pp. 897-905 ◽  
Author(s):  
RODRIGO BRANCO FERRAZ ◽  
BRUNO GUALANO ◽  
REYNALDO RODRIGUES ◽  
CECI OBARA KURIMORI ◽  
RICARDO FULLER ◽  
...  
Keyword(s):  
Blood Flow ◽  
Resistance Training ◽  
Knee Osteoarthritis ◽  
Blood Flow Restriction ◽  
Flow Restriction

scholarly journals Blood-Flow Restriction Resistance Exercise for Older Adults with Knee Osteoarthritis: A Pilot Randomized Clinical Trial

2019 ◽  
Vol 8 (2) ◽  
pp. 265 ◽  
Author(s):  
Sara Harper ◽  
Lisa Roberts ◽  
Andrew Layne ◽  
Byron Jaeger ◽  
Anna Gardner ◽  
...  
Keyword(s):  
Clinical Trial ◽  
Blood Flow ◽  
Resistance Training ◽  
Knee Osteoarthritis ◽  
Randomized Clinical Trial ◽  
Blood Flow Restriction ◽  
Moderate Intensity ◽  
Flow Restriction ◽  
Symptomatic Knee Osteoarthritis ◽  
Symptomatic Knee

In a pilot randomized clinical trial, participants aged ≥60 years (n = 35) with physical limitations and symptomatic knee osteoarthritis (OA) were randomized to 12 weeks of lower-body low-load resistance training with blood-flow restriction (BFR) or moderate-intensity resistance training (MIRT) to evaluate changes in muscle strength, pain, and physical function. Four exercises were performed three times per week to volitional fatigue using 20% and 60% of one repetition maximum (1RM). Study outcomes included knee extensor strength, gait speed, Short Physical Performance Battery (SPPB) performance, and pain via the Western Ontario and McMaster Universities OA Index (WOMAC). Per established guidance for pilot studies, primary analyses for the trial focused on safety, feasibility, and effect sizes/95% confidence intervals of dependent outcomes to inform a fully-powered trial. Across three speeds of movement, the pre- to post-training change in maximal isokinetic peak torque was 9.96 (5.76, 14.16) Nm while the mean difference between groups (BFR relative to MIRT) was −1.87 (−10.96, 7.23) Nm. Most other directionally favored MIRT, though more spontaneous reports of knee pain were observed (n = 14) compared to BFR (n = 3). BFR may have lower efficacy than MIRT in this context—though a fully-powered trial is needed to definitively address this hypothesis.

Optimal parameters of blood flow restriction and resistance training on quadriceps strength and cross-sectional area and pain in knee osteoarthritis

2021 ◽  
pp. 1-10
Author(s):  
Waleed S. Mahmoud ◽  
Ahmed Osailan ◽  
Ahmed S. Ahmed ◽  
Ragab K. Elnaggar ◽  
Nadia L. Radwan
Keyword(s):  
Blood Flow ◽  
Resistance Training ◽  
Knee Osteoarthritis ◽  
Quadriceps Strength ◽  
Sectional Area ◽  
Occlusion Pressure ◽  
Total Occlusion ◽  
Cross Sectional ◽  
Flow Restriction ◽  
Low Intensity

BACKGROUND: Knee osteoarthritis (KOA) is one of the most common chronic diseases impacting millions of elderly people. OBJECTIVES: The study compared the effects of two intensities of partial blood flow restriction (BFR) with low-intensity resistance training on quadriceps strength and cross-sectional area (CSA), and pain in people with knee osteoarthritis (PwKOA). METHODS: Thirty-five PwKOA, aged 50–65, participated. Quadriceps CSA was measured by ultrasonography, quadriceps strength – by isokinetic dynamometry and pain by VAS. These outcome variables were obtained at the beginning of the study and re-evaluated eight weeks after the intervention. RESULTS: An interaction effect was present for quadriceps CSA (P= 0.042) and quadriceps strength (P= 0.006), showing that using 70% of total occlusion pressure with 30% 1RM had a more significant effect. Knee pain improved significantly through the main effect of BFR (P< 0.001), and low-intensity resistance training (P= 0.011). Pain improved more at 70% of total occlusion pressure, with 30% of 1RM (2.5 ± 1.06) than 50% total occlusion pressure with 10% of 1RM (5.77 ± 1.46). CONCLUSION: A combination of 70% of total occlusion pressure with 30% 1RM could be beneficial in PwKOA in improving pain, and increasing the quadriceps strength. The changes in the quadriceps strength could be a predictor for knee pain.

Does Blood Flow Restriction Resistance Training Improve Knee-Extensor Strength, Function, and Reduce Patient-Reported Pain? A Critically Appraised Topic

2021 ◽  
pp. 1-6
Author(s):  
Matthew Zaremba ◽  
Joel Martin ◽  
Marcie Fyock-Martin
Keyword(s):  
Blood Flow ◽  
Resistance Training ◽  
Knee Injury ◽  
Strength Function ◽  
Knee Extensor ◽  
Blood Flow Restriction ◽  
Flow Restriction ◽  
Patient Reported ◽  
And Function ◽  
Knee Pathology

Clinical Scenario: Knee pathologies often require rehabilitation to address the loss of knee-extensor (KE) strength, function, and heightened pain. However, in the early stages of rehabilitation, higher loads may be contraindicated. Blood flow restriction (BFR) resistance training does not require high loads and has been used clinically to promote strength improvements in a variety of injured populations. BFR resistance training may be an effective alternative to high-intensity resistance training during early rehabilitation of knee pathologies. Clinical Question: Following a knee injury, does BFR resistance training improve KE strength and function, and reduce patient-reported pain? Summary of Key Findings: Four randomized controlled trial studies met the inclusion criteria. Each included study evaluated the use of BFR resistance training on knee pathologies and the effects on KE strength, functional outcomes, and pain compared with high- or low-load resistance training. All 4 studies reported significant improvements in KE strength, function, and pain through a variety of outcome measures, following BFR resistance training use as the treatment. Clinical Bottom Line: There is consistent evidence to support the use of BFR resistance training as a treatment intervention following knee injury and as a means to improve KE strength and function and to reduce pain. Strength of Recommendation: Grade A evidence supporting the use of BFR resistance training for improvement in KE strength and function, and the reduction of patient-reported pain following an acute or chronic knee pathology.

Practical blood flow restriction training increases muscle hypertrophy during a periodized resistance training programme

2013 ◽  
Vol 34 (4) ◽  
pp. 317-321 ◽  
Author(s):  
Ryan P. Lowery ◽  
Jordan M. Joy ◽  
Jeremy P. Loenneke ◽  
Eduardo O. de Souza ◽  
Marco Machado ◽  
...  
Keyword(s):  
Blood Flow ◽  
Resistance Training ◽  
Muscle Hypertrophy ◽  
Training Programme ◽  
Blood Flow Restriction ◽  
Flow Restriction ◽  
Resistance Training Programme

Effects of exercise intensity and occlusion pressure after 12 weeks of resistance training with blood-flow restriction

2015 ◽  
Vol 115 (12) ◽  
pp. 2471-2480 ◽  
Author(s):  
Manoel E. Lixandrão ◽  
Carlos Ugrinowitsch ◽  
Gilberto Laurentino ◽  
Cleiton A. Libardi ◽  
André Y. Aihara ◽  
...  
Keyword(s):  
Blood Flow ◽  
Resistance Training ◽  
Exercise Intensity ◽  
Blood Flow Restriction ◽  
Occlusion Pressure ◽  
Flow Restriction

Training response to 8 weeks of blood flow restricted training is not improved by preferentially altering tissue hypoxia or lactate accumulation when training to repetition failure

2021 ◽  
Author(s):  
William Neil Morley ◽  
Shane Ferth ◽  
Mathew Ian Bergens Debenham ◽  
Matthew Boston ◽  
Geoffrey Alonzo Power ◽  
...  
Keyword(s):  
High Pressure ◽  
Blood Flow ◽  
Resistance Training ◽  
Blood Lactate ◽  
Blood Flow Restriction ◽  
Moderate Pressure ◽  
Muscular Endurance ◽  
Occlusion Pressure ◽  
Flow Restriction ◽  
Traditional Resistance Training

Despite compelling muscular structure and function changes resulting from blood flow restricted (BFR) resistance training, mechanisms of action remain poorly characterized. Alterations in tissue O2 saturation (TSI%) and metabolites are potential drivers of observed changes, but their relationships with degree of occlusion pressure are unclear. We examined local TSI% and blood lactate (BL) concentration during BFR training to failure using different occlusion pressures on strength, hypertrophy, and muscular endurance over an 8-week training period. Twenty participants (11M:9F) trained 3/wk for 8wk using high pressure (100% resting limb occlusion pressure, LOP, 20%1RM), moderate pressure (50% LOP, 20%1RM), or traditional resistance training (70%1RM). Strength, size, and muscular endurance were measured pre/post training. TSI% and BL were quantified during a training session. Despite overall increases, no group preferentially increased strength, hypertrophy, or muscular endurance (p>0.05). Neither TSI% nor BL concentration differed between groups (p>0.05). Moderate pressure resulted in greater accumulated deoxygenation stress (TSI%*time) (-6352±3081, -3939±1835, -2532±1349 au for moderate pressure, high pressure, and TRT, p=0.018). We demonstrate that BFR training to task-failure elicits similar strength, hypertrophy, and muscular endurance changes to traditional resistance training. Further, varied occlusion pressure does not impact these outcomes, nor elicit changes in TSI% or BL concentrations. Novelty Bullets • Training to task failure with low-load blood flow restriction elicits similar improvements to traditional resistance training, regardless of occlusion pressure. • During blood flow restriction, altering occlusion pressure does not proportionally impact tissue O2 saturation nor blood lactate concentrations

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