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Old 08-19-2011, 04:07 PM   #1
rwymk7607
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Default 运动前中后均不宜喝啤酒

在炎热的夏季,冰凉清爽的啤酒确实是解暑解渴的佳品。但是,一些运动员或喜好喝啤酒的人喜欢把啤酒当作运动 饮料来喝,有的更把啤酒当作比赛后解渴和庆祝必不可少的饮品,那可就错了。
早在19世纪,酒精被认为可增加运动能力而在运动中使用,如马拉松运动员在比赛中就被给予白兰地。即使在今 天,仍有一些运动员相信少量酒精可提高运动能力而在运动中饮用。然而,事实上恰恰相反,加湿器批发价格,酒精会降低运动员的运动能力。研究表明,酒精可降低力量、速度、肌肉耐力和心血管耐力,一次大量的饮酒更 会导致反应、平衡和协调能力的降低,即使在中等量饮酒的第二天,这些运动能力仍不能完全恢复。
有的运动员认为啤酒可补充运动中消耗的糖和水分,可饮用来作为比赛或训练前的糖和液体贮备。那么啤酒真的能 为肌肉补充糖吗?让我们来看看:一瓶360ml的啤酒可提供16克糖,比一瓶同容量的含糖6%的运动饮料所 提供的糖少约5.6克。更重要的是,啤酒中热能的主要来源是酒精而不是糖。尽管吸收很快,但酒精中的能量仅 在肝脏而不在肌肉中代谢,肌肉所需的能量很少或根本不来自酒精在体内的燃烧。所以,永康盟特,啤酒并不能为肌肉工作补充消耗的能源。
另一方面,啤酒中的酒精刺激肾脏产生尿,加速体内水分的丢失而加重脱水,有研究表明饮酒后的4小时内机体因 水分丢失可减轻3%的体重。这对运动尤其耐力运动是极为不利的,并增加了运动中患心脏病的危险。而如果运动 后马上饮啤酒,光波炉和微波炉的区别,则会延缓复水甚至加重脱水,盟特新奇特价格。所以,运动前、运动中和运动后都不能把啤酒当作运动饮料饮用。
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