There is the notion
有一種認識
that obesity experts do think that energy expenditure is important
即肥胖癥專家的確認為能量消耗很重要
and reductions in physical activity
體力活動的減少
probably do explain the epidemic in obesity
也許能夠解釋肥胖癥流行的原因
There has been much of a decrease
(體力活動)確實減少了
It doesn't seem the amount of time
人們花在有計劃的鍛煉上的時間
we spend doing planned exercise
并沒有減少多少
but there does seem to be definitely an increase in recent decades
但近幾十年來
in amount of time we spend sitting at our desks
我們坐在辦公桌前的時間確實增加了
on our computers and so on
使用電腦的時間增加了
and there has been an idea
有一種觀點認為
that a lot of obesity epidemic can be explained
很多肥胖癥之所以出現
by changes in a labor-saving technology now available
是因為技術的進步節省了勞動力
We get cars
我們有了汽車
I don't know whether this is more in South Carolina
我不太清楚南卡羅萊納州的情況是不是更嚴重
where obesity rates are higher than just about anywhere in the country
那里的肥胖率是不是全美最高的
and where traffic is not really an issue
那里的交通很發達
People drive their cars everywhere
人們去哪里都開車
We even have drive-thru drycleaners there
甚至還有汽車洗衣店
I don't know if they have this here in California
我不知道加州有沒有
but it's amazing, you know
但這種情況非常驚人
they just drive everywhere
人們到哪里都開車
I really notice a difference there
我確實注意到了那里的不同之處
I came to the campus here at Berkley
我來到伯克利校園之后
and there's really a difference in levels of physical activity
發現這里的體力活動程度真的較高
That's another issue
還有一個問題
So this isthese are data from Chaput and colleagues
這是肖普特和他的同事得出的研究數據
It's been shown many times
結論反復證明
that there is a U shape association between sleep duration
睡眠長短和死亡 以及其他所有負面結果之間
and mortality and a lot of other bad things
都存在一個U型的聯系
including diabetes and obesity
特別是和糖尿病以及肥胖癥之間
These are perspective data from a 6-year perspective study
這是一個為期6年的前瞻性研究數據
We compare 7 to 8-hour sleepers.
我們將7小時睡眠者與8小時睡眠者進行了對比
Those who slept longer or shorter
睡眠時間過長或過短的人
have significantly increased risk of having
他們腰圍長度
an increase in waist circumference
增加的可能性非常大
Body weight was not shown here
這里沒有顯示體重
and increases in percent body fat
他們體內的脂肪含量也會相應提高