First, they amplify the effect of catecholamines on blood vessels.

首先，它们会放大儿茶酚胺对血管的作用。

Green tea contains both caffeine and an organic compound known as catechin.

绿茶包含咖啡因一种叫作儿茶酸的有机化合物。

Time will only tell how effective epicatechin and dark chocolate can be.

能证明表儿茶巧克力功效的唯有时间。

And catechins inhibit the action of lipases, which gives them a minor fat blocking effect.

而儿茶则会抑制脂肪酶运动，从而产生微弱的脂肪阻隔作用。

The belief is that dark chocolate can increase muscle growth because it contains the flavanol epicatechin.

有人相信巧克力可以增长肌肉，因为它富含烷醇表儿茶。

These three are all technically monoamines but norepinephrine and dopamine are classified as catecholamines.

严格说来，这三种激都属于单胺，但去甲肾上腺多巴胺也被归为儿茶酚胺。

Now, all dark chocolates are not created equal.

每块巧克力中的表儿茶含量并相同。

The ones with the highest epicatechin content are the ones with the highest cocoa purity.

可可含量越高的巧克力表儿茶才越高。

Now, certain catecholamines can shift potassium movement into cells via the beta-2-adrenergic and alpha-adrenergic receptors on cell membranes.

某些儿茶酚胺能通过细胞膜上的beta-2-alpha-肾上腺能受体将钾移入细胞。

Either way, the epicatechin benefits don't stop there.

论如何，表儿茶的好处止于此。

Certain catecholamines can also shift potassium out of cells, and this is via beta-2-adrenergic and alpha-adrenergic receptors on cell membranes.

某些儿茶酚胺也可以将钾离子移出细胞，这一行为依赖于细胞膜上β2肾上腺受体α肾上腺受体。

And as showcased, this is a very likely scenario with epicatechin and the necessary amount can be obtained through dark chocolate.

那么前面所说的表儿茶正好适用，所需用量可从巧克力中获取。

Under acidic conditions, that protective cap falls off to expose the sticky, catechol-based substance.

在酸性条件下， 保护帽会脱落， 露出粘稠的儿茶酚基物质。

It contains a natural polymer that includes catechol (KAT-eh-koal).

它包含一种天然聚合物， 包括儿茶酚 (KAT-eh-koal)。

The pump is mainly regulated by hormones such as insulin and catecholamines.

该泵主要由激（例如胰岛儿茶酚胺）调节。

To turn off the catechol's stickiness, the researchers shielded the chemical with a non-sticky molecule.

为了消除儿茶酚的粘性， 研究人员用一种非粘性分子保护了这种化学物质。

I mean, those catecholamines, I mean, there are other molecules involved too, but that, you know.

我的意思是，那些儿茶酚胺，我的意思是，也涉及其他分子，但是，你知道的。

Alright the next dopamine-directed class of therapies are inhibitors of COMT, catecholamine-O-methyltransferase, which is an enzyme that degrades dopamine and levodopa.

下一个针对多巴胺的治疗药物是COMT抑制剂；COMT，即儿茶酚胺-O-甲基转移酶，是一种可以降解多巴胺左旋多巴的酶。

You will need 100 grams of 50% cocoa dark chocolate to reach the 150 milligrams of epicatetchin used in the study.

你得吃下 100 克含 50% 可可的巧克力才能达到研究中的 150 毫克表儿茶用量。

With roughly 150 milligrams of epicatechin supplementation per day, the 6 middle-aged subjects saw a 16.6% myostatin decrease and a 49.2% follistatin increase.

每日 150 毫克的表儿茶补剂，使六位中年实验者的肌抑降低 16.6%，卵泡抑则增长了 49.2%。