Medscape:靠8杯水减肥的童鞋,你瘦了吗?

2017-08-04 小闪 医学论坛网

许多专业人士建议增加日常饮水量作为限制体重增加的一种方法,尽管在实践中这种方法没有足够的实验数据来支持。增加饮水量有可能限制体重增加的理论可能已经从横断面研究中推断出来,横断面研究表明摄入更多水的儿童和青少年体重指数(BMI)较低。

许多专业人士建议增加日常饮水量作为限制体重增加的一种方法,尽管在实践中这种方法没有足够的实验数据来支持。增加饮水量有可能限制体重增加的理论可能已经从横断面研究中推断出来,横断面研究表明摄入更多水的儿童和青少年体重指数(BMI)较低。

为了检测这一理论,最近的一项随机试验试图评估增加习惯性水摄入量6个月作为促进青少年体重减轻的干预措施。

参与者(n=38)年龄12-17岁(BMI至少在第85百分位数),被随机分配到干预组或对照组,两组均接受标准减肥饮食干预。干预组被鼓励每天增加到8杯饮水,但对照组没有鼓励喝这么水。

两组的标准饮食干预包括营养师每月进行个体膳食教育,身体活动建议和行为咨询以及每日向参加者发送短信。在每月会议期间,调查人员确定青少年如何遵守这些干预措施。

在入组时,两组每天饮用约2.1杯水。在研究过程中,水干预组每日入摄水量比对照组多1.6杯。在研究结束时,水干预组每天平均饮用4.8杯水。

研究结果表明,两组间主要结果BMI z评分变化没有差异,但均有改善,BMI z评分平均降低0.1。体量方面,两组平均体重变化小于1 kg(对照组为-0.6 kg,水干预组为-0.4 kg)。 BMI z评分、饮水量或尿比重变化之间无明显相关性。

研究结果指出,超重和肥胖青少年每天摄入8杯水的有益性并没有高于饮食建议和支持。

所以,一个人不能过分自信地建议增加饮水量作为减肥建议,但建议青少年喝多喝水不是坏主意。

参考资料:

Drink More Water, Lose More Weight? A Study in Overweight Teens - Medscape - Jul 26, 2017.

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    2018-04-19 爆笑小医
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    2017-12-17 smlt2008
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    2017-08-06 zhaojie88
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