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APPLIED PRESSURE AND RESTING BLOOD FLOW This very

APPLIED PRESSURE AND RESTING BLOOD FLOW

This very interesting study continues to shed light on the blood flow (during rest) responses of different levels of pressure relative to 100% of the individual's arterial occlusion pressure, AOP. In short, this study took 35 healthy males and females (~23.3 yo) and investigated the relationship between dominant and non-dominant resting AOP and also looked at resting blood flow at 20/40/60/80/100% AOP. While the study continued to confirm that the largest factor influencing AOP is limb circumference, they also showed that blood flow decreases somewhat linearly overall as %AOP approaches 100%, but with a wide degree of individual variance as shown in the figure above. In particular, note that even at 20% AOP, blood flow in some participants was higher than their resting AOP values and at 100% AOP, resting blood flow amounts to ~50% of their resting AOP values. In all, this suggests that the cardiovascular system overcomes the mechanical compression of the cuff to deliver blood flow to the limb.

So - does applied pressure matter? Likely it doesn't really matter too much for most applications past a threshold of minimal pressure without allowing for venous return. One application where pressure likely does matter is hypoalgesia where the discomfort induced by BFR likely aids in the pain-relieving response.

Now what is that minimal pressure? Current research suggests it's around 40-50% AOP.

Two limitations to note - this study measured the superficial femoral artery and not the posterior tibial artery which would have given a clearer picture of the relationship between AOP and blood flow. Second, this was done at rest, so it is not known if the similar response were to occur during exercise.

Regardless- strap on some cuffs and #ChaseThePump!

SOURCE: Tafuna’i (2021). Differences in femoral artery occlusion pressure between sexes and dominant and non-dominant legs.

BFR IS HERE TO STAY "Blood Flow Restriction Thera

BFR IS HERE TO STAY

"Blood Flow Restriction Therapy Continues to Prove Effective" - The title of the paper!

"It is becoming increasingly evident that BFR therapy has a role in rehabilitation."

This editorial is from a major orthopedic group (Dr. LaPrade MD) and published in Arthroscopy (A physician journal). If you ever needed something to send to a local orthopedic surgeon about the benefits of BFR training and how it can impact their clients/patients, this is it! It's also open access!

Save, throw this post a like and FOLLOW me and SHARE to your colleagues!

Source: LaPrade et al. (2021). Editorial Commentary: Blood Flow Restriction Therapy Continues to Prove Effective

THE 4 PILLARS OF BFR TRAINING The 4 pillars are a

THE 4 PILLARS OF BFR TRAINING

The 4 pillars are a progressive, systematic approach to scaling BFR training from the least to most difficult. The beauty of the pillars is that they provide the BFR trained provider a framework to successfully integrate BFR into a program.

What's even cooler is Pillar 4 is now hypothesized to be a vital component of high performance athletes (Ferguson, 2021; Pignanelli, 2021) to reach the next plateau of human performance. Three and a half years ago we saw the potential of pillar 4 to stand on its own and included it in the progression framework without much evidence at all and now here we are in 2021 having Olympians use it for performance & recovery purposes and pushing the envelope for what humans can achieve. It's exciting.

Want to learn about BFR? Check the link in bio and get become a trained BFR provider TODAY!

Post below how you choose to integrate BFR training in your programming? What framework (if any) do you use?

AUTOMATIC AUTOREGULATED BLOOD FLOW RESTRICTION DEV

AUTOMATIC AUTOREGULATED BLOOD FLOW RESTRICTION DEVICES

A common question we get asked alot is when should automatic autoregulated devices be used? We think automatic autoregulated devices are an amazing tool for the clinician who has the ability to purchase them. They are easy to use and take away a lot of the barriers associated with BFR integration using other devices.

Our personal preference and when we utilize these devices more than other devices is in the immediate post-surgical phase or with individuals who have multiple comorbidities and the elderly. There are a number of reasons why:

1. Surgeons tend to prefer the automatic autoregulated devices on their patients as these are what has been recommended in their own BFR publications (Arthroscopy & Techniques in Orthopedics) so they are familiar with them.
2. The autoregulated nature of the devices means that the applied pressure is consistent. This can reduce some of the cardiovascular, blood pressure and perceptual responses to BFR exercise, making it more tolerable for the client/patient in a time period where it's critical to get the exercise completed!
3. For the elderly client, using a slightly wider cuff that is autoregulated has never left any bruises or petechiae following BFR training, but has using other manual cuffs even inflated to a low relative personalized pressure.

While the data does not suggest superiority of one application method over another, preference should play a role in the decision-making process when utilizing different BFR technologies. We discussed this in our recent "Perceived Barriers to Blood Flow Restriction" paper if you want more nuance. It's open access.

⁉️What are your thoughts and experiences using automatic autoregulated devices in your own practice? Did we miss anything in our short synopsis? Post below‼️

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