One last factor in Ketosis preserving muscle is leucine.

酮症最后一个储存能量的要素酸。

Without this enzyme, leucine can only be broken down part-way.

没有这种酶，酸只能被部分分解。

When you're in ketosis, you have a higher fasting blood leucine level.

当你处于酮症状态时，空腹的血液中酸水平会更高。

The bacteria hiding out between your toes produce this acid when they're chomping away on leucine.

当隐趾的细菌产生酸时，就会产生这种酸。

Glycine, alanine, valine, leucine are all nonpolar assets and this is how you drop them in an exam.

甘酸，丙酸，缬酸，酸全都非极性的，这就你如何征服考试的秘诀啦！

Well, it'll probably track with plasma leucine.

嗯，它可能会追踪血浆酸。

Corn is actually very high in leucine.

玉米中酸含量实际上非常高。

And then I said, OK, well, maybe leucine isn't getting into the cell.

然后我说，好吧，也酸没有进入细胞。

So we looked at intracellular leucine.

因此我们研究了细胞内的酸。

Followed the exact path of plasmalucine.

遵循血浆酸的精确路径。

And a quality whey protein would be the highest leucine available?

优质乳清蛋白的酸含量最高吗？

Measurements like fractional synthetic rate within 0 to 5 hours post-exercise were reduced by as much as 20 percent through leucine tracer observations.

通过酸示踪观察，诸如运动后0到5小时内的分数合成率等测量值降低了20%。

Eggs, whey protein, eggs are going to be around nine percent leucine, you know, beef, chicken.

鸡蛋、乳清蛋白，鸡蛋中大约含有 9% 的酸，你知道，牛肉、鸡肉也如此。

And leucine is a key branch chain amino acid that has an anabolic effect on the body so it preserves lean body mass.

而酸一种体内起合成代谢作用的，关键性支链基酸，所以它能保护体内脂肪较少的肌肉块。

And my hypothesis was, well, however long leucine is elevated in the blood is going to be how long protein synthesis stays up.

我的假设，血液中酸升高的时间长短决定了蛋白质合成维持的时间长短。

So like the worst sources of protein in the diet are still like three times more leucine than you get in collagen protein.

因此，就像饮食中最糟糕的蛋白质来源一样，酸仍然比胶原蛋白多三倍。

Plant sources of protein tend to be lower in branched-chain amino acids, they tend to be lower in essential amino acids, and tend to be lower in leucine.

植物来源的蛋白质往往支链基酸含量较低，必需基酸含量较低，酸含量较低。

Collagen protein is going to be least ideal for post-workout protein because of the fact that it's, you know, it lacks significant amounts of leucine, et cetera.

胶原蛋白最不理想的运动后蛋白质，因为它缺乏大量的酸等。

Essential amino acids, or EAAs, are amino acids that our body needs but cannot produce on its own, and there are 9 of them: Histidine, isoleucine, leucine, lysine, methionine, phenylalanine, threonine, tryptophan, and valine.

基本基酸，简称 EAA，我们身体需要但不能自己产生的基酸，其中有 9 种：组酸，异酸，酸，赖酸，蛋酸，苯丙酸，苏酸，色酸和缬酸。

In specific, Dr. Layne Norton explains that you need to go to greater lengths to get enough of that key muscle protein synthesis stimulating amino acid leucine if you are relying on plant sources of protein.

具体来说，莱恩·诺顿博士解释说，如果你依赖植物来源的蛋白质，你需要吃得更多，以获得足够的关键肌肉蛋白质合成刺激基酸酸。