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周末大餐破壞減肥

放大字體  縮小字體 發布日期:2009-12-23
核心提示:It's no surprise that holiday feasts often bring expanding waistlines, but a new study finds that weekend eating can also be a cause for concern. Some people chow down more calories on Saturday and Sunday than on a typical weekday, researchers find.

    It's no surprise that holiday feasts often bring expanding waistlines, but a new study finds that weekend eating can also be a cause for concern.

    Some people chow down more calories on Saturday and Sunday than on a typical weekday, researchers find. The study also showed that people tend to keep track of how much they are consuming on a daily basis, at least in a rough sense. Specifically, if they skimped on breakfast, they would make up for it by gorging at lunch, more or less.

    The results suggest that those wanting to lose a few (or keep from putting on a few over the holidays) may want to think about their eating habits on a weekly basis rather than day-by-day.

    "Being forewarned is forearmed in this regard," said J. Jeffrey Inman, a professor of marketing at the University of Pittsburgh. "If you monitor your intake during the week you can kind of make sure you don't go too crazy on the weekends."

    Over the last 30 years, the obesity rate in the United States has increased dramatically, going from about 15 percent in the years 1976-1980 to about 33 percent of adults aged 20 to 74 in 2003-2004.

    Inman and his colleague Adwait Khare, of Quinnipiac University in Connecticut, wanted to see if patterns in people's eating habits could help to explain the fat statistics.

    They used data collected in 1998 and 1999 on the eating habits of about 600 individuals who had participated in a national survey conducted annually by NPD group, a market research firm that collects this information for American food companies. The results were published in the Fall 2009 issue of the Journal of Public Policy & Marketing.

    For each survey, participants kept track of the foods eaten by everyone in their household over a two-week period. Self-reports are prone to errors, though Inman thinks the results are actually conservative since people tend to forget to report or underestimate how much they consumed.

    Among the patterns revealed:

    If participants consumed more calories at one meal they tended to eat less at the next. But if they ate a light meal for breakfast, they'd down more calories for lunch or dinner.

    About 84 percent of the participants tended to group their meals on a daily basis, with meals eaten during one day having a stronger effect on each other than meals eaten over adjoining days.

    On average, people ate 37 calories more on the weekends than weekdays, mostly at breakfast. The researches speculate this breakfast bump may be due to people having more time to eat on weekend mornings.

    Participants who ate more on weekends than weekdays at all three meals - breakfast, lunch and dinner - devoured as much as 400 calories more on weekends, a 20-percent increase.

    Participants who skimped on the weekends for all three meals compared with weekdays, ate as little as 400 calories less on weekends than on weekdays.

    The takeaway message for consumers: "I need to monitor myself and make sure I don't fall into the 400-over group on the weekends," Inman said.

    Some of the biggest jumps in calories came on holidays, particularly those centered on feasts, such as Thanksgiving and Christmas.

    For instance, participants ate an average of 174 calories more on holidays than on non-holidays, and this increase usually came at lunchtime. However, some people ate more than 900 calories extra on holidays compared to non-holidays, a 46-percent increase for that group.

    However, while holiday grubbing may be bad for your diet, over-eating on the weekend may be just as detrimental because "there's a lot more weekends than there are holidays," Inman said.

    The findings indicate that people may want to think beyond their daily calorie intake. "Our results suggest you need to think between days, because if you have a big dinner last night, then those calories don't disappear, they're with you today,"

    Most adults eat between 1,800 and 2,500 calories per day. Having a weekly budget of calories might be useful to consumers, Inman said. "If you think of it in a little broader terms, say 14,000 [to] 15,000 calories for the week, I think you'd be much better able to monitor the highs and lows for the week."

    眾人皆知節日大吃盛宴經常會導致腰圍變粗,而一項新研究發現,周末進餐也會成為煩惱之源。

    研究人員發現,有些人在周六和周日吸收的卡路里多于平日。該研究也表明人們往往留意他們平均每天吃多少,至少粗略的這樣估算。具體說,如果他們沒吃早飯,他們午飯就要大吃一頓大致補齊。

    研究結果表明,那些想減輕幾磅或不想在節假日增加體重的人會考慮一周的飲食習慣,而不是天天如此。

    "在這方面提前警告有備無患"匹茲堡大學銷售學教授Jeffrey Inman 說,"如果全周都監控你的進食量,你就有幾分把握在周末不會過于瘋狂。"

    過去三十年間,美國的肥胖率顯著增加,1976-1980期間占大約15%,2003-2004年齡在20到74之間的成年人肥胖率已達到約33%.

    Inman和他的同事,康涅狄格州Quinnipiac大學的Adwait Khare想研究人們的飲食習慣模式是否對解釋這些肥胖數據有所幫助。

    他們使用的數據是1998和1999年收集的,當時共有大約600人參加了由NPD集團一年一次進行的關于個人飲食習慣的全國調查。NPD是為美國食品公司采集信息的市場研究所。Inman和Adwait Khare的研究結果在《公共政策與營銷雜志》2009秋季版刊登。

    針對每一項調查,參加者要追蹤家中每個人在兩周的時間里的飲食。盡管Inman認為結果確實很保守,但因為人們總是忘記匯報或低估飯量,自我報告容易有誤差。

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關鍵詞: 大餐 減肥
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