Sat, Jan 24, 2015 - Page 10 News List

Why working night shifts is an obesity risk
夜班工作為何帶來過胖風險

Patients at Greater Taichung’s China Medical University Hospital on Apr. 10, 2013, model the pants they wore pre-diet to show how much weight they lost over three months.
二零一三年四月十日,台中的中國醫藥大學附設醫院特地請病人換上減肥前的褲子,讓大家一睹他們減肥三個月的成果。

Photo: Tsai Shu-yuan, Liberty Times
照片:自由時報記者蔡淑媛

Scientists believe they have discovered why people who work nightshifts are more prone to weight gain and obesity. Rather than eating more, night workers burn off fewer calories, their research suggests.

The scientists told the journal Proceedings of the National Academy of Sciences that eating at night messed with our bodies’ natural metabolism.

The researchers set up a small trial where volunteers ate identical amounts as they switched between working days and nights.

For the first two days, the volunteers followed a normal schedule — sleeping at night, staying awake during the day, and eating breakfast, lunch and an evening meal. For the next three, they stayed awake and ate their meals at night and slept during the day. Although the timing of the meals changed, the calorie content remained the same.

Total energy expenditure — how much energy the volunteers burned — went down when they switched to the nightshift pattern. Even though participants initially burned more fat — possibly because they slept less during the transition to nights, say the researchers from the University of Colorado — the energy expenditure over the three days of shift work was lower overall.

(LIBERTY TIMES)

科學家認為,他們已經發現上夜班比較會變胖和過胖的原因。他們的研究顯示,上夜班的人不是吃比較多,而是燃燒較少卡路里。

科學家告訴美國「國家科學院院刊」,晚上吃東西會搞亂身體的自然代謝。

研究人員安排小型測試,自願者在日班與夜班工作之間轉換時,吃同樣份量的食物。

最初兩天,自願者作息正常──晚上睡覺,白天醒著,吃早餐、午餐與晚餐。接下來三天,他們晚上不睡覺、夜間吃東西,白天睡覺。進餐的時間雖有改變,但卡路里量一樣。

科羅拉多大學的研究人員說,自願者轉到夜班模式時,整體能量消耗下降,雖然他們一開始可能因為在轉換成夜班的期間睡眠較少而燃燒較多脂肪,但三天的夜班工作期間,能量消耗量整體來說較少。

(自由時報國際新聞中心)

TODAY’S WORDS
今日單字

1. prone to adj. phr.

易於;有…傾向的 (yi4 yu2; you3…qing2 xiang4 de)

例: She is prone to exaggerate. You need not believe everything she says.

(她喜歡誇大,她說的話你不用照單全收。)

2. burn off v. phr.

消耗;燃燒 (xiao1 hao4; ran2 shao1)

例: Running is an excellent way to burn off excess calories.

(跑步是燃燒多餘熱量的一個好方法。)

3. identical adj.

一模一樣 (yi1 mo2 yi2 yang4)

例: The two rooms were virtually identical.

(這兩個房間幾乎一模一樣。)


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