BFR pressure needs a device name in your training log
In short
BFR pressure is a device setting, not a complete measure of the body's response. In 40 adults, B-Strong and KAATSU had no significant band effect on leg blood flow. Keep device context in the log; this is not a pressure prescription.
A comparison in 40 healthy young adults found no significant main effect of band type on leg blood flow for B-Strong versus KAATSU (p=0.750). That finding has a narrow scope: two soft, elastic, narrow bands with multichambered or segmented bladder designs. It does not make the pressure display on every blood flow restriction (BFR) device an interchangeable training dose.
What did the pressure number describe?
The sample included 20 men and 20 women. Researchers used ultrasound to measure superficial femoral artery blood flow with both bands. Before each pressure measurement, they measured unrestricted flow again, then expressed flow under the band as a percentage of that paired baseline. Pressure was an input to the test; the blood flow response was a separately measured result. A log that treats the two as synonyms loses that distinction.
| Comparison | What was measured | What it does not establish |
|---|---|---|
| Bands | B-Strong multichambered bands and KAATSU bands | Equivalent responses for other widths or constructions |
| Set pressure | 200, 300, 400 and 500 mmHg; pressure effect p＜0.001 | An appropriate training pressure for an individual |
| Outcome | Superficial femoral artery flow relative to unrestricted flow | Long-term muscle growth or strength gains |
Does a nonsignificant difference mean identical training?
There was no significant main effect of sex (p=0.716). Pairwise comparisons between all pressure settings were significant (p＜0.006). These findings describe blood flow patterns within the sample and test conditions. A nonsignificant band effect does not prove that the devices are identical, that every participant responded alike, or that another cuff will produce the same response. Nor was this a training trial measuring hypertrophy, performance or long-term safety.
At 500 mmHg, neither band could occlude blood flow in all participants. Absence of complete occlusion is not evidence of safety or a reason to increase pressure. Do not copy these experimental settings for personal use; decisions about use and setup require a professional familiar with the specific device.
What belongs in a useful training record?
- Name the device and band type, and mark the date when equipment changes.
- Record the placement and setup method confirmed with a qualified professional. Do not transfer a number from one band to another.
- Keep exercise load and repetitions separate from BFR settings. Treat sessions after an equipment change as different conditions when comparing performance.
For fairlift, performance comparisons still concern the load lifted and repetitions completed. Band pressure should not be added to barbell weight or treated as a strength score. A higher setting is not evidence of greater strength. The editorial takeaway from this study is about record quality: preserve enough device context to interpret a setting later, rather than using a research number as a target.
Frequently asked questions
Can different BFR bands use the same pressure?
This study does not justify transferring one pressure across devices. It compared B-Strong and KAATSU under particular conditions, so a record needs the device name and setup context.
Is BFR safe whenever blood flow is not fully occluded?
The absence of complete occlusion alone does not establish safety. Experimental settings from this study should not be copied as personal training instructions.
Does this study tell us how much muscle BFR builds?
No. It measured blood flow responses, not hypertrophy or strength gains after a training program.
Source: Journal of Strength and Conditioning Research · PubMed (published )