And so what are the mechanism
那么兩者之間存在什么機制呢
how might physical activity moderate this association
體力活動如何減緩了這種聯系
In discussing this
在討論這一問題時
I'll first discuss
我首先要講到的是
how it might moderate the association of short sleep or inadequate sleep
體力活動如何調節了
with overweight or obesity
睡眠過短或睡眠不足與超重或肥胖之間的關系
And there are number of mechanisms
今天 我們已經找到了很多關于兩者之間
they have addressed already today
如何產生關系的機制
I will (talk) a little bit more
我也會簡單的介紹一些
How might physical activity
體力活動如何
moderate the association of short sleep and obesity?
影響了睡眠不足與肥胖之間的關系呢?
One is by fatigue
首先是疲勞感
If you are fatigued, and not getting enough sleep
如果你感到疲勞 沒有充足的睡眠
we might very well be less likely or able to engage in physical activity
那么我們就不大可能或不能參加體力活動
We know that exercise has a very profound
我們知道運動有很強大的
antidepressant and anxiety-reducing effects
抗抑郁和緩解焦慮的作用
So exercise could attenuate some increases in food intake
所以運動能夠減少人們因壓力和抑郁
associated with stress and with depression
而增加的食物攝取量
So it's very interesting to see Dr. Pragger's talk
帕拉格博士會在我之后談到壓力的問題
after mine dealing with stress
這將是一個非常有趣的話題
There's evidence that exercise can promote sleep
有證據證明 運動有利于促進睡眠
so it could have opposite effect being helpful
運動可以產生相反的效果 而這種效果是有益的
And then exercise could attenuate weight gain
運動能減少因睡眠不足而引起的
that might normally be associated with sleep loss
體重增加
So if you could medicate increase levels of activity
如果你能提高活動水平
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體重增加
And an analogy study will show by Van Helder and colleagues
馮 赫爾頓及其同事也做了一個類別性研究
backing I think 1983
我覺得是在1983年
Canadian researchers
他們是一群加拿大的研究人員
showed that the impairment in glucose tolerance
他們發現葡萄糖的耐受性損傷
associated with sleep loss
與睡眠不足有關
almost completely reversed
但同樣一群試驗對象如果參與了體力活動
when this different group of subjects exercised
那么即使在睡眠不足的情況下
while they are being exposed to the sleep deprivation
他們的葡萄糖耐受性也完全的不一樣了