Two Time a Week vs. Five Time a Week Blood Flow Restriction Training Program for the Lower Extremity.

Not Applicable

• Conditions: Blood Flow Restriction Training

• Registration Number: NCT05342909
• Lead Sponsor: George Fox University

Brief Summary

This study will randomize healthy adults who regularly perform resistance training exercises for the lower extremities (2x a week) to one of three groups: a blood flow restriction (BFR) exercise group that trains 2x a week, a BFR exercise group that trains 5x a week, and a control group that does not perform any additional BFR exercise. Those randomized to the BFR groups will perform the unilateral 90-0 knee extension exercise followed by the bilateral squat. Subjects will have the BFR applied to their dominant lower extremity and will perform 4 sets (30/15/15/15 reps) per exercise. Training will initial start at 30% of 1RM with training intensity increased by 5% every 2 weeks. The training program will last 8 weeks.

Pre- and posttests include ultrasound imaging of the dominant leg rectus femoris and strength testing via hand held dynamometry.

Detailed Description

Not available

Study Timeline

• Study Start: 2020-09-01
• Status Verified: 2022-04
• Study First Submitted: 2022-04-18
• Study First Submitted QC: 2022-04-18
• Last Update Submitted: 2022-04-18
• Study First Posted: 2022-04-25
• Last Update Posted: 2022-04-25
• Primary Completion: 2022-06-30
• Study Completion: 2022-06-30

Recruitment & Eligibility

• Status: UNKNOWN
• Sex: All
• Target Recruitment: 55

Inclusion Criteria

healthy adults 18 years of age who currently perform weight-lifting (i.e., resistance training) exercise 2x a week.

Exclusion Criteria

current musculoskeletal injury; surgery to the low back or lower extremities during the prior year; one or more contraindications to blood flow restriction training.

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: PARALLEL

Primary Outcome Measures

Name	Time	Method
Cross-sectional area of the rectus femoris	8 weeks	Ultrasound imaging will measure the cross-sectional area of the rectus femoris
Muscular strength	8 weeks	Hand held dynamometry will be used to assess changes in strength (bilaterally) for the quadricep, hip extensors, and hip abductors.

Trial Locations

Locations (2)

George Fox University School of Physical Therapy; 🇺🇸 Newberg, Oregon, United States

George Fox University; 🇺🇸 Newberg, Oregon, United States