Practical Blood Flow Restriction Training Increases Muscle Hypertrophy During a Periodized Resistance Training Programme

Clin Physiol Funct Imaging. 2014 Jul;34(4):317-21. doi: 10.1111/cpf.12099. Epub 2013 Nov 4.

Abstract

Background: Resistance training in combination with practical blood flow restriction (pBFR) is thought to stimulate muscle hypertrophy by increasing muscle activation and muscle swelling. Most previous studies used the KAATSU device; however, little long-term research has been completed using pBFR.

Objective: To investigate the effects of pBFR on muscle hypertrophy.

Methods: Twenty college-aged male participants with a minimum of 1 year of resistance training experience were recruited for this study. Our study consisted of a randomized, crossover protocol consisting of individuals either using pBFR for the elbow flexors during the first 4 weeks (BFR-HI) or the second 4 weeks (HI-BFR) of an 8-week resistance training programme. Direct ultrasound-determined bicep muscle thickness was assessed collectively at baseline and at the end of weeks 4 and 8.

Results: There were no differences in muscle thickness between groups at baseline (P = 0·52). There were time (P<0·01, ES = 0·99) but no condition by time effects (P = 0·58, ES = 0·80) for muscle thickness in which the combined values of both groups increased on average from week 0 (3·66 ± 0·06) to week 4 (3·95 ± 0·05) to week 8 (4·11 ± 0·07). However, both the BFR-HI and HI-BFR increased significantly from baseline to week 4 (6·9% and 8·6%, P<0·01) and from weeks 4 to 8 (4·1%, 4·0%, P<0·01), respectively.

Conclusion: The results of this study suggest that pBFR can stimulate muscle hypertrophy to the same degree to that of high-intensity resistance training.

Keywords: hypertrophy; low intensity; occlusion; periodization.

Publication types

  • Randomized Controlled Trial

MeSH terms

  • Adaptation, Physiological
  • Constriction
  • Cross-Over Studies
  • Humans
  • Hypertrophy
  • Male
  • Muscle Contraction
  • Muscle Strength
  • Muscle, Skeletal / blood supply*
  • Muscle, Skeletal / diagnostic imaging
  • Muscle, Skeletal / physiology*
  • Regional Blood Flow
  • Resistance Training*
  • Ultrasonography
  • Young Adult