人们每当久坐或久站后 ,常会感到下肢酸胀、乏力。而从事站立工作的人 ,日久更易发生下肢静脉曲张 ,重者可出现下肢皮肤色素沉着 ,经久不愈的溃疡等 ,这是下肢血液回流不畅所致。人体下肢血液回流 ,最主要靠踮脚跟时双侧小腿后部肌肉的收缩挤压。据测定 ,双侧小腿肌肉每次收缩 Whenever people sedentary or long standing, often feel lower extremity soreness, fatigue. And those who work in standing, more prone to varicose veins over time, severe skin pigmentation may appear lower extremities, ulcers and so on, which is poor due to lower limbs return to the bloodstream. Human lower extremity blood reflux, the most important by the heel when the back of the lower leg muscles contraction squeeze. It is measured, bilateral calf muscle contraction each time