SCN Nutrition Ajinomoto™ quality L-Leucine + HMB 3:1 ratio | 300gr / Lime-Lemon

SCN Nutrition Ajinomoto™ quality L-Leucine + HMB 3:1 ratio | 300gr / Lime-Lemon

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Κωδικός Προϊόντος: scn_006
Διαθεσιμότητα: Παράδοση 1-3 ημέρες
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Leucine
Leucine is one of the three Branched Chain Amino Acids and sometimes referred to as the ‘main’ amino acid due to the most popular benefit of BCAAs (muscle building) being mostly due to leucine.
Leucine is an activator of the protein known as mTOR, which then induces muscle protein synthesis via S6K; the other two BCAAs may also activate mTOR, but are much weaker than leucine in doing so (and as such, 5g of leucine will be more effective than 5g mixed BCAAs). The leucine metabolite, HMB, is also weaker than leucine at inducing muscle protein synthesis despite being more effective at preserving lean mass from breakdown.
Leucine is a tad different from the other two BCAAs Isoleucine and Valine as leucine seems to have a fair bit of testing on the amino acid in isolation rather than in a BCAA mixture, whereas the other two BCAAs are not as well studied.
The studies assessing leucine mostly look at muscle protein synthesis when additional leucine is added to the diet or to a test meal, and it appears that leucine is able to reliably increase muscle protein synthesis after test meals. Whether this results in more lean mass over a period of time is somewhat less reliable though, and leucine appears to be more effective at promoting gains in muscle in people with lower dietary protein intake and in the elderly (who tend to have impaired muscle protein synthesis in response to the diet).
The interactions of leucine on glucose are not clear. Leucine possesses both blood sugar reducing properties (can release insulin from the pancreas, can directly stimulate glucose uptake into a cell without insulin) but also the opposite (via stimulating S6K, it can inhibit insulin-stimulated glucose uptake). In a cell culture, leucine stimulates glucose uptake for up to 45 minutes and then hinders itself while in living systems acute doses of leucine do not appear to do anything remarkable (some limited evidence that leucine can be rehabilitative in diabetes, but this is preliminary). Isoleucine is a more potent hypoglycemic agent, but to less inhibition of its own actions.



HMB
HMB (short for β-Hydroxy β-Methylbutyrate) is a metabolite of the amino acid Leucine that, along with KIC (α keto-isocaproate) and isovaleryl-CoA, mediate the effects of leucine. Approximately 5% of dietary leucine is oxidized into HMB, and HMB appears to be the main metabolite of leucine that more effectively prevents the breakdown of muscle protein.
When compared to leucine, HMB appears to be significantly more potent on a gram per gram basis at attenuating the rate of muscle protein breakdown but is less effective than leucine at inducing muscle protein synthesis. Due to this, HMB is marketed as an anti-catabolic agent (purposed to reduce the rate of muscle breakdown) rather than an anabolic agent (purposed to increase muscle mass).
Human trials don’t normally tend to be structured to properly assess the effects of HMB, as most of the studies are a standard diet paired with an exercise regimen investigating the role of HMB in promoting muscle protein synthesis (of which it is similar to leucine in the sense that there are positive results, but quite unreliably so); the limited evidence that assesses HMB during periods of muscle loss are either underpowered or not in athletes.
HMB, currently, appears to be a pretty interesting supplement for the purpose of reducing muscle wasting during periods where muscle atrophy is accelerated (cachexia, AIDS, bedrest) and should theoretically work in athletes on a calorie restricted diet but is not fully established for this role yet (which is a notable issue, since Glutamine has a large dichotomy between clinical and healthy populations).



Directions: Mix every scoop (5gr) to 80-100ml of water or include it to your intra/post-workout formula.
Depending the athlete’s weight, training time, training intensity and goals, Consume 5gr-15 during workout
For optimum anabolic result: Consume 5gr-15gr immediately after workout

Χαρακτηριστικά Προϊόντος
Δόσεις 60 Δόσεις
Μέγεθος Συσκευασίας 300gr
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