Practical blood flow restriction training increases muscle hypertrophy during a periodized resistance training
Ryan P Lowery1, Jordan M Joy, Jeremy P Loenneke
1Department of Health Sciences and Human Performance, The University of Tampa, Tampa, FL, USA.
Clinical Physiology and Functional Imaging
|November 6, 2013
Summary
Practical blood flow restriction (pBFR) combined with resistance training effectively stimulates muscle hypertrophy. This method shows comparable muscle growth results to high-intensity training, offering a viable alternative for muscle development.
Area of Science:
- Exercise Physiology
- Muscle Hypertrophy Research
- Sports Science
Background:
- Practical blood flow restriction (pBFR) combined with resistance training is theorized to enhance muscle hypertrophy via increased muscle activation and swelling.
- Previous research predominantly utilized the KAATSU device, with limited long-term studies on pBFR.
Purpose of the Study:
- To investigate the effects of practical blood flow restriction (pBFR) on muscle hypertrophy.
- To compare the efficacy of pBFR with high-intensity resistance training for muscle growth.
Main Methods:
- A randomized, crossover study involving 20 college-aged males with at least one year of resistance training experience.
- Participants underwent an 8-week resistance training program, incorporating pBFR during either the first 4 weeks (BFR-HI) or the second 4 weeks (HI-BFR).
- Bicep muscle thickness was measured using ultrasound at baseline, week 4, and week 8.
Main Results:
- No significant differences in baseline muscle thickness were observed between the groups.
- A significant time effect (P<0.01) indicated overall muscle thickness increase from baseline to week 8.
- Both BFR-HI and HI-BFR groups demonstrated significant muscle thickness gains from baseline to week 4 and from week 4 to week 8.
Conclusions:
- Practical blood flow restriction (pBFR) effectively stimulates muscle hypertrophy.
- pBFR demonstrates comparable muscle hypertrophy outcomes to high-intensity resistance training.
- pBFR presents a viable training modality for enhancing muscle growth.
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