听力文摘：运动会引发头痛吗?

Dear A Moment of Science,

亲爱的科学一刻：

I like to exercise, but I suffer from migraines and worry thatgetting my sweat on at the gym could trigger a headache.

我喜欢运动，但我患有偏头痛，担心去健身房运动到出汗会引发头痛。

Am I right to be cautious?

我应该这么谨慎吗？

Good question.

问得好。

For some people, exercise can in fact lead to a migraine.

对一些人来说，运动其实能导致偏头痛。

But most studies have shown that, onaverage, exercise may actually help ward¹ off migraines.

但绝大多数研究显示，一般而言，运动可能实际上能帮你远离偏头痛。

At the very least, exercise doesn't seemto hurt most migraine sufferers.

至少可以肯定，运动并不会对大多数偏头痛患者造成损害。

Right,one study done in Sweden put more than ninety migraine prone² folks into three groups:

正好，瑞典有一项研究将90名患有偏头痛的人分成3组：

one that exercised for around forty minutes three times a week, another that was given a drug toprevent migraines, and a third had regular relaxation³ sessions.

一组一周进行3次约40分钟的运动；另一组服用药物来防止偏头痛；第三组则进行定时放松活动。

After three months, and then anadditional six months of follow up, the study found that migraines were reduced for people in allthree groups.

3个月后的研究结果及另外6个月的跟踪调查显示，3组人的偏头痛都有所缓解。

Another, smaller study examined more than twenty-five migraine sufferers before, during, andafter working out on stationary⁴ bikes.

另一项规模较小的研究对25名偏头痛患者在健身车上运动前、运动中和运动后的情况进行了调查。

After three months, the subjects all experienced fewerheadaches.

3个月后，所有的研究对象发生偏头痛的次数都更少了。

So at least according to these studies, exercise appears to be a viable⁵ alternative to migraine drugs.

因此，至少就这些研究结论来说，用运动来代替服用偏头痛药物似乎是可行的。

To be clear, though, this doesn't mean that working out never triggers migraines.

尽管如此，需要明确的是，这并不意味着锻炼不会引发偏头痛。

Especially if you don't exercise regularly, it's probably best to ease into it and see how your headreacts.

尤其当你不经常运动时，最好是循序渐进地进行运动，并看看你头部的反应。

If working up a sweat doesn't appear to trigger a headache, then you can gradually buildup to higher intensity⁶ workouts.

如果运动到出汗并未引发头痛，你就可以逐步进行更大强度的锻炼。

1 ward   

n.守卫，监护，病房，行政区，由监护人或法院保护的人（尤指儿童）；vt.守护，躲开

参考例句：

• The hospital has a medical ward and a surgical ward.这家医院有内科病房和外科病房。
• During the evening picnic,I'll carry a torch to ward off the bugs.傍晚野餐时，我要点根火把，抵挡蚊虫。

2 prone   

adj.(to)易于…的，很可能…的；俯卧的

参考例句：

• Some people are prone to jump to hasty conclusions.有些人往往作出轻率的结论。
• He is prone to lose his temper when people disagree with him.人家一不同意他的意见,他就发脾气。

3 relaxation   

n.松弛，放松；休息；消遣；娱乐

参考例句：

• The minister has consistently opposed any relaxation in the law.部长一向反对法律上的任何放宽。
• She listens to classical music for relaxation.她听古典音乐放松。

4 stationary   

adj.固定的，静止不动的

参考例句：

• A stationary object is easy to be aimed at.一个静止不动的物体是容易瞄准的。
• Wait until the bus is stationary before you get off.你要等公共汽车停稳了再下车。

5 viable   

adj.可行的，切实可行的，能活下去的

参考例句：

• The scheme is economically viable.这个计划从经济效益来看是可行的。
• The economy of the country is not viable.这个国家经济是难以维持的。

6 intensity   

n.强烈，剧烈；强度；烈度

参考例句：

• I didn't realize the intensity of people's feelings on this issue.我没有意识到这一问题能引起群情激奋。
• The strike is growing in intensity.罢工日益加剧。