Blood Flow Restriction Training in Patients With Rotator Cuff Tendinopathy: A Randomized, Assessor-Blinded,...

Area of Science:

• Orthopedics
• Sports Medicine
• Rehabilitation Science

Background:

• Rotator cuff (RC) tendinopathy is a common cause of shoulder pain and dysfunction.
• Current rehabilitation often involves progressive resistance exercise, but optimal methods are debated.
• Blood flow restriction (BFR) training offers a potential alternative or adjunct for muscle strengthening with low loads.

Purpose of the Study:

• To evaluate the efficacy of low-load BFR training compared to standard non-BFR rehabilitation.
• To assess the impact of BFR on shoulder muscle thickness, RC strength, and patient-reported shoulder symptoms.

Main Methods:

• A randomized, assessor-blinded, controlled trial was conducted over 8 weeks.
• Twenty-eight patients with RC tendinopathy were assigned to either BFR or non-BFR training groups.
• Outcomes included muscle thickness (RC, deltoid, scapula retractors, biceps), shoulder internal and external rotation strength, and pain/function scores.

Main Results:

• The BFR group demonstrated significantly greater increases in biceps muscle thickness and shoulder internal rotation strength.
• Both BFR and non-BFR groups showed significant improvements in rotator cuff, scapula retractor, and deltoid muscle thickness over time.
• Improvements in shoulder external rotation strength, pain, and function were observed in both groups, with no significant differences between them.

Conclusions:

• Low-load BFR training is effective in enhancing biceps muscle thickness and shoulder internal rotation strength in RC tendinopathy.
• BFR training did not show superiority over standard rehabilitation for rotator cuff muscle thickness, external rotation strength, or shoulder pain and function.
• Further research may explore optimal BFR protocols for comprehensive shoulder rehabilitation.