Blood Flow Restriction Exercise: Considerations Of ...

Posted by Annamaria on July 24th, 2021

Patients or post-operative clients, high load and high intensity workouts might not be scientifically proper.

It has been utilized in the fitness center setting for some time however it is acquiring popularity in medical settings. BFR training was initially established in the 1960's in Japan and understood as KAATSU training.

It can be applied to either the upper or lower limb. The cuff is then pumped up to a specific pressure with the goal of acquiring partial arterial and total venous occlusion. Muscle hypertrophy is the increase in size of the muscle as well as an increase of the protein content within the fibers.

Muscle tension and metabolic stress are the two main elements accountable for muscle hypertrophy. Mechanical Tension & Metabolic Tension [edit modify source] When a muscle is placed under mechanical stress, the concentration of anabolic hormonal agent levels increase. The activation of myogenic stem cells and the raised anabolic hormonal agents lead to protein metabolic process and as such muscle hypertrophy can occur.

Insulin-like development aspect and development hormonal agent are responsible for increased collagen synthesis after exercise and aids muscle healing. Development hormone itself does not straight cause muscle hypertrophy however it helps muscle recovery and therefore potentially assists in the muscle reinforcing process. The build-up of lactate and hydrogen ions (eg in hypoxic training) more boosts the release of growth hormonal agent.

Myostatin controls and inhibits cell development in muscle tissue. It needs to be essentially shut down for muscle hypertrophy to take place. Resistance training leads to the compression of capillary within the muscles being trained. This causes an hypoxic environment due to a reduction in oxygen shipment to the muscle.

When there is blood pooling and a build-up of metabolites cell swelling takes place. This swelling within the cells causes an anabolic response and results in muscle hypertrophy.

The cuff is put proximally to the muscle being workout and low intensity workouts can then be performed. Due to the fact that the outflow of blood is limited using the cuff capillary blood that has a low oxygen material collects and there is a boost in protons and lactic acid. The exact same physiological adjustments to the muscle (eg release of hormonal agents, hypoxia and cell swelling) will happen during the BFR training and low strength exercise as would accompany high strength exercise.

( 1) Low intensity BFR (LI-BFR) results in an increase in the water content of the muscle cells (cell swelling). It likewise speeds up the recruitment of fast-twitch muscle fibers. It is likewise hypothesized that once the cuff is eliminated a hyperemia (excess of blood in the blood vessels) will form and this will trigger additional cell swelling.

These boosts were comparable to gains gotten as a result of high-intensity workout without BFR A research study comparing (1) high intensity, (2) low strength, (3) low and high intensity with BFR and (4) low strength with BFR. While all 4 workout routines produced boosts in torque, muscle activations and muscle endurance over a 6 week duration - the high intensity (group 1) and BFR (groups 3 and 4) produced the best impact size and were equivalent to each other.