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运动后吃什么最好?

许多人在体育锻炼后常有肌肉发胀、关节酸痛、精神疲乏之感。为了尽快解除疲劳,他们就会买些鸡、鱼、肉、蛋等大吃一顿,以为这样可补充营养,满足身体需要。其实,此时食用这些食品不但不利于解除疲劳,反而对身体有不良影响。
那么运动后吃什么最好呢?这要从食物的酸性和碱性说起——
人类的食物可分为酸性食物和碱性食物。判断食物的酸碱性,并非根据人们的味觉、也不是根据食物溶于水中的化学性,而是根据食物进入人体后所生成的最终代谢物的酸碱性而定。
酸性食物通常含有丰富的蛋白质、脂肪和糖类,含有钾、钠、钙、镁等元素,在体内代谢后生成碱性物质,能阻止血液向酸性方面变化。所以,酸味的水果,一般都为碱性食物而不是酸性食物,鸡、鱼、肉、蛋、糖等味虽不酸,但却是酸性食物。
美国一位病理学家经过长期研究指出,只有体液呈弱碱性,才能保持人体健康。正常人的体液呈弱碱性,人在体育锻炼后,感到肌肉、关节酸胀和精神疲 乏,其主要原因是体内的糖、脂肪、蛋白质被大量分解,在分解过程中,产生乳酸、磷酸等酸性物质。这些酸性物质刺激人体组织器官,使人感到肌肉、关节酸胀和 精神疲乏。
而此时若单纯食用富含酸性物质的肉、蛋、鱼等,会使体液更加酸性化,不利于疲劳的解除。而食用蔬菜、甘薯、柑桔、苹果之类的水果,由于它们的成碱作用,可以消除体内过剩的酸,降低尿的酸度,增加尿酸的溶解度,可减少酸在膀胱中形成结石的可能。
所以,人在运动后,应多吃些富含碱性的食物,如水果、蔬菜、豆制品等,以利于保持人体内酸碱度的基本平衡,保持人体健康,尽快消除运动带来的疲劳。

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