Saturday, December 11, 2010
Health News : Causes of Heavy and Tired Legs
The syndrome of painful legs and is caused by a lack of blood flow caused by the act of standing or sitting in one position for an extended period of time, and by a lack of fitness.
Specifically, when the heart is in a higher position in the body than the legs, blood in the legs must be pumped against gravity to reach the heart. The contraction of the muscles in your legs when you move acts as a pump, squeezing the veins and push blood upward. As the blood moves more and more upward with each contraction of leg muscles, it does not fall when the muscles relax by small one-way valves in the veins.
Yet for long periods of inactivity, such as when you sit or stand upright in the same position for long, the leg muscles do not contract a fairly tight or frequent enough to force the blood to rise. Consequently, blood is assembled in the leg veins, preventing tissue to drain the legs. This can cause a sensation of heaviness or tension in the legs, making them sore and tired.
If the heavy leg syndrome persists without treatment, the small valves in the veins of the legs will eventually stop functioning properly. This leads to swollen ankles, varicose veins and eventually to deep vein thrombosis.