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These increases resembled gains gotten as an outcome of high-intensity workout without BFR A study comparing (1) high intensity, (2) low strength, (3) low and high strength with BFR and (4) low strength with BFR. While all 4 workout regimes produced boosts in torque, muscle activations and muscle endurance over a 6 week period - the high intensity (group 1) and BFR (groups 3 and 4) produced the biggest effect size and were equivalent to each other.
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Patients or post-operative clients, high load and high strength workouts may not be clinically appropriate. Blood Flow Constraint (BFR) training is a strategy that integrates low intensity workout with blood circulation occlusion that produces comparable results to high intensity training. It has been utilized in the fitness center setting for some time but it is acquiring popularity in clinical settings. Blood Circulation Constraint (BFR) Training [edit edit source] BFR training was initially developed 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 inflated to a particular pressure with the aim of getting partial arterial and complete venous occlusion. Muscle hypertrophy is the increase in diameter of the muscle as well as an increase of the protein content within the fibres. Muscle stress and metabolic tension are the two main aspects responsible for muscle hypertrophy. Mechanical Stress & Metabolic Tension [modify modify source] When a muscle is positioned under mechanical stress, the concentration of anabolic hormone levels increase. The activation of myogenic stem cells and the raised anabolic hormonal agents result in protein metabolic process and as such muscle hypertrophy can happen. Development hormonal agent itself does not directly cause muscle hypertrophy but it aids muscle recovery and thus possibly helps with the muscle strengthening process. The accumulation of lactate and hydrogen ions (eg in hypoxic training) additional boosts the release of development hormonal agent. Myostatin controls and hinders cell development in muscle tissue. Resistance training results in the compression of blood vessels within the muscles being trained. When there is blood pooling and a build-up of metabolites cell swelling takes place. This swelling within the cells triggers an anabolic response and results in muscle hypertrophy. The cuff is positioned proximally to the muscle being exercise and low strength workouts can then be performed. Because the outflow of blood is limited using the cuff capillary blood that has a low oxygen content collects and there is an increase in protons and lactic acid. The very same physiological adjustments to the muscle (eg release of hormonal agents, hypoxia and cell swelling) will take place throughout the BFR training and low strength workout as would happen with high strength exercise. ( 1) Low strength BFR (LI-BFR) leads to a boost in the water content of the muscle cells (cell swelling). It also accelerates the recruitment of fast-twitch muscle fibers. It is likewise assumed that when the cuff is removed a hyperemia (excess of blood in the capillary) will form and this will trigger more cell swelling. These boosts resembled gains obtained as an outcome of high-intensity exercise without BFR A study comparing (1) high intensity, (2) low intensity, (3) low and high intensity with BFR and (4) low strength with BFR. While all 4 exercise routines produced increases in torque, muscle activations and muscle endurance over a 6 week period - the high intensity (group 1) and BFR (groups 3 and 4) produced the biggest effect size and were similar to each other.
