Superbodies 奥运特辑－篮球（双语视频）

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英文字幕：

A point guard. The hero if the hard court. A single player with unique skills -and a nervous system made of steel.

Hi, I'm Dr Greg Wells. Basketball is all about speed, power and intensity. And no one controls these factors more than the point guard. The point guard is the leader of the team, and so much more. Point guards need to survey an entire court at once. Like an air traffic controller at a busy airport, they're crafty multi-taskers.

To help navigate the action, they rely on extra-ocular muscles: Six muscles that move their eyes. The faster the eyes move, the more information that can be processed. Our retinas have 100 million photo-receptor cells. They convert light into nerve signals -and warnings.

But here's the challenge: a point guard has to watch that their eyes aren't giving away the play. This is where the game gets physical. Point guards need a lot of strength, but they're typically smaller than other forwards. Bulking up helps, but they also need to alter their brains to take the pain. The brain floods the body with pain-killing endorphins.

Endorphins are a similar chemical to the painkiller known as morphine. The hypothalamus, a gland in the base of the brain, shoots it into the nervous system - where it acts directly to block pain signals from reaching the brain. So by fighting their body's instinctual responses, point guards essentially re-wire their brains.

Use your peripheral vision... And master the brain, to block pain... That's how you shoot, for gold!

中文字幕：

控球后卫，球场上的英雄，拥有无与伦比的技巧和钢铁般的神经系统。

我是维尔斯博士。篮球的决胜关键是速度、力量和冲力，控球后卫尤其需要掌控这些因素。控球后卫是球队的领袖，不仅这样，他们还要快速扫视全场，如同机场的空中交通调度员。他们是机灵的多面手。

为了判断球场形势，他们需要依靠眼外肌，即控制眼球的六块肌肉。眼球动得越快，能处理的讯息就越多。我们的视网膜共有一亿个感光细胞。这些细胞把光转化为神经讯号和警告。

但有一个困难，控球后卫必须小心，别让眼睛出卖他们的计谋。这时就要拼力量。控球后卫需要大量体能，但他们的体型一般比前锋小，强壮些会有利，但他们也要让大脑适应疼痛。大脑向身体分泌大量能镇痛的安多芬。

安多芬是一种类似止疼剂吗啡的化学物质，位于丘脑下部的脑下垂体，向神经系统分泌安多芬，它能直接阻止疼痛讯号到达大脑。通过抵抗身体本能反应，控球后卫更改了大脑传讯的线路。

运用周边视觉，并控制大脑，从而阻挡疼痛。金牌就可能成为囊中物。

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（Video provided by GE 编辑：Julie）