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And so what are the mechanism
那么两者之间存在什么机制呢
how might physical activity moderate this association
体力活动如何减缓了这种联系
In discussing this
在讨论这一问题时
I'll first discuss
我首先要讲到的是
how it might moderate the association of short sleep or inadequate sleep
体力活动如何调节了
with overweight or obesity
睡眠过短或睡眠不足与超重或肥胖之间的关系
And there are number of mechanisms
今天 我们已经找到了很多关于两者之间
they have addressed already today
如何产生关系的机制
I will (talk) a little bit more
我也会简单的介绍一些
How might physical activity
体力活动如何
moderate the association of short sleep and obesity?
影响了睡眠不足与肥胖之间的关系呢?
One is by fatigue
首先是疲劳感
If you are fatigued, and not getting enough sleep
如果你感到疲劳 没有充足的睡眠
we might very well be less likely or able to engage in physical activity
那么我们就不大可能或不能参加体力活动
We know that exercise has a very profound
我们知道运动有很强大的
antidepressant and anxiety-reducing effects
抗抑郁和缓解焦虑的作用
So exercise could attenuate some increases in food intake
所以运动能够减少人们因压力和抑郁
associated with stress and with depression
而增加的食物摄取量
So it's very interesting to see Dr. Pragger's talk
帕拉格博士会在我之后谈到压力的问题
after mine dealing with stress
这将是一个非常有趣的话题
There's evidence that exercise can promote sleep
有证据证明 运动有利于促进睡眠
so it could have opposite effect being helpful
运动可以产生相反的效果 而这种效果是有益的
And then exercise could attenuate weight gain
运动能减少因睡眠不足而引起的
that might normally be associated with sleep loss
体重增加
So if you could medicate increase levels of activity
如果你能提高活动水平
maybe one could prevent a weight gain associated with sleep loss
那么你就有可能避免因睡眠不足而引起的体重增加
And an analogy study will show by Van Helder and colleagues
冯 赫尔顿及其同事也做了一个类别性研究
backing I think 1983
我觉得是在1983年
Canadian researchers
他们是一群加拿大的研究人员
showed that the impairment in glucose tolerance
他们发现葡萄糖的耐受性损伤
associated with sleep loss
与睡眠不足有关
almost completely reversed
但同样一群试验对象如果参与了体力活动
when this different group of subjects exercised
那么即使在睡眠不足的情况下
while they are being exposed to the sleep deprivation
他们的葡萄糖耐受性也完全的不一样了
