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

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.

绿茶包咖啡因和一种叫作儿茶酸的有机化合物。

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

而儿茶素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.

有人相信黑巧克力可以增长肌肉，因为它富黄烷醇表儿茶素。

Now, all dark chocolates are not created equal.

每块黑巧克力中的表儿茶素量并不完全相同。

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

可可量越高的黑巧克力表儿茶素才越高。

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

严格说来，这三种激素都属于单胺，但去甲肾上腺素和多巴胺也被归为儿茶酚胺。

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-和alpha-肾上腺素能受体将钾移入细胞。

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

不论如何，表儿茶素的好处不止于此。

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

能证明表儿茶素和黑巧克力功效的唯有时间。

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肾上腺素受体和α肾上腺素受体。

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素正好适用，所需用量可从黑巧克力中获取。

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

它包一种天然聚合物， 包括儿茶酚 (KAT-eh-koal)。

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

该泵主要由激素（例如胰岛素和儿茶酚胺）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子保护了这种化学物质。

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。

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和左旋多巴的酶。

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 50% 可可的黑巧克力才能达到研究中的 150 毫克表儿茶素用量。

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 毫克的表儿茶素补剂，使六位中年实验者的肌抑素降低 16.6%，卵泡抑素则增长了 49.2%。

These two so-called " antidepressants" blocked the usual depletion of the catecholamines dopamine and norepinephrine and blocked the depletion of the monoamine serotonin.

这两种所谓的“抗抑郁药”阻止了儿茶酚胺、多巴胺和去甲肾上腺素的消耗，也阻止了 5-羟色胺这种单胺的消耗。