The evidence is convergent. Multiple independent sources reach the same conclusion, the underlying mechanism is well-characterized, and even the field's most cautious voices treat it as worth doing.
there are really two areas where bfr shines one of them is in an individual who for some reason can't lift heavy weight but still needs to get stronger and potentially bigger and the obvious example is the person who's recovering from an injury and then potentially the person who just you know has a concern about lifting heavy weight either from a technical standpoint or injury avoidance or things like that
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i think that there are there are days where if you if you have a heavy day for example and you're going into the gym but you don't feel good or you not psychologically have it and it could be potentially dangerous for you to use a heavy weight because you're not focused then maybe that's a time where you might be able to implement some blood flow restriction because you can use light weights it doesn't require as much focus and you could probably see a lot of the same response at least with growth
i think it could be it could be a tool if the if that's how they choose to use it um i think for muscle growth i i think i agree with lane that it really comes down to personal preference because even without blood flow restriction we've seen from 30 percent up up to you know 80 percent or even higher can produce the same amount of muscle growth so i think that allows you to have you know some level of preference on based on how you feel that day or what you enjoy
but i do think that it's probably important to to note that if a person's not comfortable with it they don't have to do blood flow restriction in order to optimize how much muscle that they that they can grow but it it is a tool that could be potentially quite effective for them
The second place where bfr seems to really stand out is in hypertrophy most of these studies are demonstrating slightly superior hypertrophy response despite less total volume and certainly lower load is that it's at least as good in hypertrophy and in some cases better is my reading of the literature
i think the utility of do using blood flow restriction is with that you can use lower loads any um playing with the speed either concentrically or eccentrically
so an immediate use case became well look you know can we use far lighter weights but produce you know still a profound amount of discomfort and and and the obvious place where this showed up of course is around injury right so when a person is injured let's use my example when I had shoulder surgery I wanted be able to still exercise that arm but for months after surgery I could not carry for example a barbell that was the same weight that I would have carried before right it was still too much pressure on the humoris in its newly repaired joint around the labrum so what if I used a third of the weight that I might have previously used I'll do a lot more reps but I'll create this Blood Flow Restriction around it and I experience a much higher train effect