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These increases resembled gains acquired as a result of high-intensity workout without BFR A research 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 boosts in torque, muscle activations and muscle endurance over a 6 week period - the high strength (group 1) and BFR (groups 3 and 4) produced the greatest effect size and were comparable to each other.
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Individualized blood flow limitation rehabilitation training (PBFR) is a game-changing injury recovery therapy that is producing significantly positive outcomes: Reduce atrophy and loss of strength from disuse and non-weight bearing after injuries Increase strength with only 30% loads Boost hypertrophy with only 30% loads Enhance muscle endurance in 1/3 the time Improve muscle protein synthesis in the elderly Improve strength and hypertrophy after surgical treatment Improve muscle activation Increase development hormone reactions. Muscle weakness typically takes place in a variety of conditions and pathologies. High load resistance training has been shown to be the most effective means in improving muscular strength and acquiring muscle hypertrophy. The problem that exists is that in particular populations that require muscle reinforcing eg Chronic Discomfort Patients or post-operative patients, high load and high intensity workouts might not be clinically suitable. Blood Flow Limitation (BFR) training is a strategy that integrates low strength workout with blood circulation occlusion that produces similar results to high intensity training. It has been utilized in the gym setting for some time but it is acquiring appeal in scientific settings. Blood Circulation Restriction (BFR) Training [edit modify source] BFR training was initially established in the 1960's in Japan and known 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 obtaining partial arterial and total venous occlusion. The patient is then asked to perform resistance exercises at a low intensity of 20-30% of 1 repetition max (1RM), with high repeatings per set (15-30) and brief rest periods in between sets (30 seconds) Understanding the Physiology of Muscle Hypertrophy. [modify edit source] Muscle hypertrophy is the boost in diameter of the muscle as well as a boost of the protein material within the fibres. Muscle tension and metabolic tension are the 2 main aspects responsible for muscle hypertrophy. The activation of myogenic stem cells and the elevated anabolic hormones result in protein metabolism and as such muscle hypertrophy can take place. Growth hormone itself does not straight trigger muscle hypertrophy however it aids muscle healing and thus potentially assists in the muscle strengthening process. The accumulation of lactate and hydrogen ions (eg in hypoxic training) additional boosts the release of growth hormone. Myostatin controls and hinders cell development in muscle tissue. Resistance training results in the compression of blood vessels within the muscles being trained. This causes a boost in anaerobic lactic metabolic process and the production of lactate. When there is blood pooling and an accumulation of metabolites cell swelling takes place. This swelling within the cells causes an anabolic response and results in muscle hypertrophy. The cell swelling may actually trigger mechanical stress which will then activate the myogenic stem cells as talked about above.
The cuff is positioned proximally to the muscle being exercise and low strength exercises can then be carried out. Since 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 very same physiological adaptations to the muscle (eg release of hormones, hypoxia and cell swelling) will occur during the BFR training and low strength exercise as would happen with high intensity exercise. ( 1) Low strength BFR (LI-BFR) results in a boost in the water material of the muscle cells (cell swelling). It also accelerates the recruitment of fast-twitch muscle fibers. It is also hypothesized that once the cuff is gotten rid of a hyperemia (excess of blood in the blood vessels) will form and this will cause more cell swelling. These boosts resembled gains gotten as an outcome of high-intensity workout without BFR A study comparing (1) high strength, (2) low intensity, (3) high and low strength 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 strength (group 1) and BFR (groups 3 and 4) produced the best effect size and were similar to each other.