人久坐或久站都会感到下肢酸胀,特别是教师和从事服务性行业的人,上了些年纪更容易发生下肢静脉曲张,重者还会出现下肢皮肤色素沉着、伤口经久不愈等。这是下肢血液回流不畅所造成的。人的腿部肌肉中有大量血管,人在上下踮脚时,腿部肌肉就会一紧一松。当肌肉放松时,来自心脏的动脉血液会增加向肌肉的灌注量;当肌肉收紧时,会挤压血管加快静脉血液回流心脏,从而促进血液循环。据测定,踮 People sedentary or long standing will feel lower extremity soreness, especially teachers and service-oriented industries, on some older prone to varicose veins, severe cases of lower extremity skin pigmentation, wounds unpleasant and so on. This is caused by poor circulation of lower extremity blood. Human leg muscles in a large number of blood vessels, when people stomp up and down, the leg muscles will be a tight one loose. Arterial blood from the heart increases the amount of fluid that is delivered to the muscles when the muscles relax. When the muscles tighten, they squeeze the blood vessels to speed up the venous return to the heart and promote blood circulation. It is measured, 踮