One last factor in Ketosis preserving muscle is leucine.

酮症最后一个储存能量的要素是亮氨酸。

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

当你处于酮症状态时，空腹的血液亮氨酸水平会更高。

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

十分重要，因为它能分解氨基酸白氨酸。

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

没有，亮氨酸只能被部分分解。

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

甘氨酸，丙氨酸，缬氨酸，亮氨酸全都是非极性的，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酸时，就会产生酸。

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

然后我说，好吧，也许亮氨酸没有进入细胞。

Well, it'll probably track with plasma leucine.

嗯，它可能会追踪血浆亮氨酸。

Corn is actually very high in leucine.

亮氨酸含量实际上非常高。

So we looked at intracellular leucine.

因此我们研究了细胞内的亮氨酸。

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

优质乳清蛋白的亮氨酸含量最高吗？

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

通过亮氨酸示踪观察，诸运动后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，鸡蛋大约含有 9% 的亮氨酸，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.

而亮氨酸是一在体内起合成代谢作用的，关键性支链氨基酸，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.

我的假设是，血液亮氨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，就像饮食最糟糕的蛋白质来源一样，亮氨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氨基酸含量较低，必需氨基酸含量较低，亮氨酸含量较低。

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.

胶原蛋白是最不理想的运动后蛋白质，因为它缺乏大量的亮氨酸等。

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.

目前没有治疗异戊酸血症的方法，但是一些疗法——比避免进食白氨酸过多的食物，从其他物质，比没有威胁的氨基酸，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.

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