One last factor in Ketosis preserving muscle is leucine.

酮症最后一个储存能的要素是亮氨。

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

当你处于酮症状态时，空腹的血液中亮氨水平会更。

This enzyme is important because it helps break down the amino acid leucine.

这种酶十分重要，因为它能分解氨基白氨。

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

没有这种酶，亮氨只能被部分分解。

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

甘氨，丙氨，缬氨，亮氨全都是非极性的，这就是你何征服考试的秘诀啦！

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

当隐藏在脚趾的细菌产生亮氨时，就会产生这种。

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

然后我说，好吧，也许亮氨没有进入细胞。

Well, it'll probably track with plasma leucine.

嗯，它可能会追踪血浆亮氨。

Corn is actually very high in leucine.

玉米中亮氨实际上非常。

So we looked at intracellular leucine.

因此我们研究了细胞内的亮氨。

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

优质乳清蛋白的亮氨最吗？

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

通过亮氨示踪观察，诸运动后0到5小时内的分数合成率等测值降低了20%。

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

鸡蛋、乳清蛋白，鸡蛋中大约有 9% 的亮氨，你知道，牛肉、鸡肉也是此。

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

而亮氨是一种在体内起合成代谢作用的，关键性支链氨基，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.

我的假设是，血液中亮氨升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，亮氨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氨基较低，必需氨基较低，亮氨较低。

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.

胶原蛋白是最不理想的运动后蛋白质，因为它缺乏大的亮氨等。

There is, so far, no cure for isovaleric acidemia, but some treatments — like avoiding foods rich in leucine, and taking supplements of other, non-threatening amino acids — can help keep patients safe.

目前没有治疗异戊血症的方法，但是一些疗法——比避免进食白氨过多的食物，从其他物质中，比没有威胁的氨基，能够保证患者安全。

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.

基本氨基，简称 EAA，是我们身体需要但不能自己产生的氨基，其中有 9 种：组氨，异亮氨，亮氨，赖氨，蛋氨，苯丙氨，苏氨，色氨和缬氨。