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November 27, 2020Frontiers in PhysiologyOpen Access

Acute Effects of Continuous and Intermittent Blood Flow Restriction on Movement Velocity During Bench Press Exercise Against Different Loads

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Key result

Intermittent and continuous blood flow restriction increased peak bar velocity by 12-17% during bench press exercise at lighter loads (20-50% 1RM) compared to no restriction.

Why the study?

The study evaluated the effects of continuous and intermittent blood flow restriction on bar velocity during the bench press exercise across different resistive loads.

Does continuous or intermittent blood flow restriction improve bar velocity during bench press exercise in strength-trained males?

Comparison

Continuous BFR vs intermittent BFR vs no BFR

Design

Randomized counterbalanced crossover study

Authors

MWMichał WilkMGMariola GepfertMKMichał Krzysztofik

Discussion

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Overview

Acute BFR velocity gains at low loads are preliminary; leaves open translation to chronic strength or clinical outcomes.

Study Design

Type

RCT (n=11)

Blinding

Open-label

Randomization

Randomized crossover design

Multicenter

No

Structured PICO

Does continuous or intermittent blood flow restriction improve bar velocity during bench press exercise in strength-trained males?

P
Population
11 healthy, strength-trained young men with a bench press personal best of at least 120% body mass, evaluated in a randomized crossover trial.
I
Intervention
Intermittent blood flow restriction (I-BFR) and continuous blood flow restriction (C-BFR) using narrow cuffs (4 cm) at 70% of full arterial occlusion pressure during bench press exercise (8 sets of 2 reps, 20-90% 1RM).
C
Comparator
No blood flow restriction (NO-BFR) during the same bench press exercise protocol.
O
Outcome
Peak bar velocity (PV) and mean bar velocity (MV) measured using a linear position transducer.surrogate

Main Result

Standardized Mean Difference: 0.82

Absolute Event Rate: 2.34% vs 2.01%

p-value: p=<0.0001

Blood flow restriction during bench press exercise acutely increases peak bar velocity at lower loads (20-50% 1RM) without impairing performance at higher loads.

Limitations

  • Lack of physiological and biomechanical evaluations to explain the causes of changes
  • Results may not translate to other types of exercises, different loads, or different cuff pressures
  • Small sample size

Cite This Study

Wilk et al. (2020) conducted an RCT in Healthy strength-trained males (n=11). Blood flow restriction (intermittent or continuous) vs. No blood flow restriction was evaluated on Peak bar velocity at 20% 1RM (m/s) (Cohen's d 0.82, p=<0.0001). Intermittent and continuous blood flow restriction increased peak bar velocity by 12-17% during bench press exercise at lighter loads (20-50% 1RM) compared to no restriction.

synapsesocial.com/papers/6a6f3fa9f44fa9f079dca986https://doi.org/10.3389/fphys.2020.569915
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Also Consider

Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context:

  1. 1Acute impact of blood flow restriction on strength-endurance performance during the bench press exercise2021 · 12 citations
  2. 2Blood flow restriction during high load bench press does not increase bar velocity or cause physiological changes in non‐occluded agonist muscles2025
  3. 3Acute Effects of Different Blood Flow Restriction Protocols on Bar Velocity During the Squat Exercise2021 · 16 citations
  4. 4The Acute Effects of External Compression With Blood Flow Restriction on Maximal Strength and Strength-Endurance Performance of the Upper Limbs2020 · 44 citations
  5. 5Effects of Blood flow Restriction and Load on Mean Propulsive Velocity and Subjective Perceived Exertion During Squat and Bench Press Exercises2024 · 3 citations