Muscular Weakness
Conditions
Keywords
infraspinatus, external rotators, blood flow restriction
Brief summary
The purpose of this study is to evaluate the ability of blood flow restriction therapy to improve strength of shoulder muscles during the sidelying external rotation (ER) exercise versus a control group who only performs the sidelying ER exercise.
Detailed description
The purpose of this study is to determine if blood flow restriction (BFR) therapy is superior at increasing strength of the shoulder (supraspinatus, infraspinatus, posterior deltoid, and middle deltoid) and increasing tendon size of the supraspinatus and infraspinatus (as determined by diagnostic ultrasound) while performing the sidelying external rotation exercise compared to those who only perform the sideyling external rotation exercise without BFR. Subjects will be randomized to one of two treatment groups: exercise with BFR or exercise alone. Recruitment will be a sample of convenience consisting of healthy adults (age range 22 to 45). Subjects will perform the sidelying external rotation exercise 2 times a week for an 8 week period.
Interventions
DEVICEBlood Flow Restriction
Subjects will perform sidelying external rotation exercise
Sponsors
George Fox University
Study design
Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
SINGLE (Outcomes Assessor)
Masking description
Outcomes assessors are blinded to group allocation.
Eligibility
Sex/Gender
ALL
Age
18 Years to 45 Years
Healthy volunteers
Yes
Inclusion criteria
1\. Healthy adult (age 18 and older) with no current shoulder pathology
Exclusion criteria
1. Current neck, shoulder (or general upper extremity), and/or thoracic spine pathology 2. Shoulder surgery (or general upper extremity surgery) during the prior 6-month time period 3. Cervical/thoracic spine surgery during the prior 1 year 4. Subject having one or more contraindications for BFR training.
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Muscular Strength as Measured by Dynamometry | Change from Baseline to 8-weeks | Use a hand held dynamometer (MicroFet 2) to measure strength of the middle and posterior deltoid, the supraspinatus, and the infraspinatus |
| Tendon Size as Measured by Diagnostic Ultrasound | Change from Baseline to 8-weeks | Ultrasound images are capture at pre- and post-test sessions |
Countries
United States
Contacts
Primary ContactJason Brumitt, PhD
Backup ContactTyler Cuddeford, PhD
Outcome results
None listed