BFR Training on a Bike to Augment RC Strength, Leg Strength, and VO2 Peak

NCT ID: NCT05344391

Last Updated: 2022-04-25

Basic Information

• Recruitment Status: UNKNOWN
• Clinical Phase: NA
• Total Enrollment: 50 participants
• Study Classification: INTERVENTIONAL
• Study Start Date: 2022-04-10
• Study Completion Date: 2023-01-30

Brief Summary

This study will investigate if subjects who bike at 40% of heart rate reserve (HRR) with blood flow restriction (BFR) applied to bilateral thighs for 10 minutes (at 80% limb occlusion pressure) will experience greater gains in 10 rep max for dominant lower extremity leg press, greater gains in rotator cuff strength (hand held dynamometer testing for supraspinatus and external rotators) and greater gains in VO2 peak.

Detailed Description

This study will randomize healthy adult subjects to one of two groups: a BFR biking group that performs 10 min of cycling at 40% heart rate reserve (HRR) with bilateral occlusion applied to the proximal thighs (80% LOP) or to a non-biking BFR group perform 10 min of cycling at 40% HRR. After each cycling session subjects will perform 3x15 of the scaption exercise and 3x15 sidelying external rotation with their dominant upper extremity. They will initially start training the shoulder at 30% of 1RM (estimated from an equation formula) for the first 2 weeks followed by increasing training load by 1lbs each exercise every 2 weeks. The training program will last 6 weeks (3x week for 6 weeks, total of 18 sessions).

Pretest and posttests will include: VO2 peak testing on a cycle using Cosmed metabolic cart, hand held dynamometry to measure strength of the supraspinatus and external rotators of the shoulder using traditional manual muscle test positions, and on a separate day 10RM testing on a leg press for the dominant lower extremity.

Conditions

Can BFR Cycling Augment Strength and VO2peak

Study Design

• Allocation Method: RANDOMIZED
• Intervention Model: PARALLEL
• Primary Study Purpose: TREATMENT
• Blinding Strategy: NONE

Study Groups

BFR cycling

This group will perform cycling with BFR applied bilaterally at 80% LOP for 10 min and cycling at 40% HRR. Next they will perform 3x15 of the scaption and sidelying external rotation exercises. These will initially be performed at 30% 1RM; every 2 weeks load increased by 1lbs.

Group Type: EXPERIMENTAL

BFR cycling

Intervention Type: OTHER

Cycling with BFR followed by shoulder exercises

Cycling without BFR

This group will perform cycling and the same shoulder exercises using the same training parameters; however, BFR will not be applied.

Group Type: ACTIVE_COMPARATOR

Cycling without BFR

Intervention Type: OTHER

Cycling without BFR followed by shoulder exercises

Interventions

BFR cycling

Cycling with BFR followed by shoulder exercises

Intervention Type: OTHER

Cycling without BFR

Cycling without BFR followed by shoulder exercises

Intervention Type: OTHER

Eligibility Criteria

Exclusion Criteria

-

• Minimum Eligible Age: 18 Years
• Eligible Sex: ALL
• Accepts Healthy Volunteers: Yes

Sponsors

George Fox University

OTHER

Sponsor Role: lead

Responsible Party

Jason Brumitt

Associate Professor of Physical Therapy

Responsibility Role: PRINCIPAL_INVESTIGATOR

Principal Investigators

JASON BRUMITT, PhD

Role: PRINCIPAL_INVESTIGATOR

George Fox University

Locations

College of Physical Therapy / George Fox University

Newberg, Oregon, United States

Site Status: RECRUITING

George Fox University School of Physical Therapy

Newberg, Oregon, United States

Site Status: RECRUITING

Countries

United States

Central Contacts

JASON BRUMITT, PhD

Role: CONTACT

jbrumitt@georgefox.edu

5035542461

Facility Contacts

JASON BRUMITT, PhD

Role: primary

jbrumitt@georgefox.edu

503-554-2461

Jason Brumitt, PhD

Role: primary

jbrumitt@georgefox.edu

503-554-2461

Jason Brumitt, PhD

Role: backup

jbrumitt@georgefox.edu

5035542461

Other Identifiers

George Fox College of PT

Identifier Type: -

Identifier Source: org_study_id