The Study
Frequent blood flow restricted training not to failure and to failure induces similar gains in myonuclei and muscle mass
This study is like a fair test where two groups of guys did different kinds of leg workouts with special bands, and scientists checked their muscles afterward. It shows both ways worked about the same, but only for these 12 guys. It doesn't prove it works the same for everyone else.
Analysis score
Maximum 90 for a randomized controlled trial.
Where the score came from
This study tested whether lifting weights with a special band around the leg (to restrict blood flow) and stopping before total exhaustion still builds muscle and strength as well as pushing until you can't do another rep.
Where does this study sit?
Reviews of RCTs (Meta-analyses)
Max 100Randomized Trials
Max 90Reviews of Cohort Studies
Max 85Cohort Studies
Max 72Reviews of Case-Control Studies
Max 63Case-Control Studies
Max 58Cross-Sectional & Case Series
Max 50Expert Opinion
Max 543 / 100
Quality score
Participants are randomly assigned to treatment or control groups, minimizing bias. The gold standard for testing whether an intervention causes an effect.
Key takeaways
Summary
Based on the study abstract and findings.
- 1Yes—this means you can get strong and build muscle without exhausting yourself every workout, which could make training more sustainable and less painful.
- 2Both groups—those who stopped before failure and those who pushed to failure—gained about 20% more muscle nuclei, 25–50% more satellite cells, 5–10% bigger muscles, and 6–11% more strength after two weeks.
Score breakdown, methodology, conflicts of interest, evidence analysis & raw study data
Publication
Journal
Scandinavian Journal of Medicine & Science in Sports
Year
2021
Authors
T. Bjørnsen, M. Wernbom, G. Paulsen, S. Berntsen, R. Brankovic, Håkon Stålesen, J. Sundnes, T. Raastad
Related Content
Claims (5)
In untrained young men, two-week sessions of blood flow-restricted resistance training, whether performed to muscle failure or not, result in identical increases in muscle fiber nuclei, satellite cells, muscle size, and strength.
In untrained young men, a specific type of resistance training with restricted blood flow leads to measurable increases in muscle nuclei, satellite cells, and muscle size, with the largest changes occurring 10 to 24 days after the last workout.
In untrained young men, high-frequency blood flow-restricted resistance training causes a 20% increase in muscle echo intensity during the first phase of training, followed by an 8-11% decrease below baseline levels by 24 days after training ends.
In untrained young men, high-frequency blood flow-restricted resistance training reduces the size of type-1 muscle fibers by about 10% at 10 days after training, even though the overall muscle gets larger.
In untrained young men, high-frequency blood flow-restricted resistance training increases strength measurements like one-rep max and maximal voluntary contraction, even though the size of type-1 muscle fibers temporarily decreases.
Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.