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The veins of our legs
The venous system of lower limbs ensures the return of blood to the heart and lungs. It consists of a superficial venous network connected to a network embedded deep in muscles ensures the return of 90% of blood to the heart.
The veins of our legs are organized into two networks:
- A network of veins hidden deep within the muscles and therefore invisible;
- A network of superficial veins sometimes visible under the skin where they appear as blue nets.
These two networks communicate freely with each other through many channels of trade. While standing or sitting, gravity slows the venous circulation back to the heart. For the blood does not flow back under the influence of gravity when we are standing or sitting, the entire venous system of the legs has a very powerful system of anti-reflux valves.
Role of muscles that support the deep veins
The close connection between the tone of the calf muscles and the diameter of intra-muscular veins is known for a long time.
It was recently confirmed by a study-BED REST conducted by CNES (Center National d'Etudes Spatiales). To compensate for the venous dilatation due to muscle wasting, it was shown that the deep muscles known as postural muscles had a greater role on the venous return to the superficial muscles and he had to choose physical exercise can cause the same time the muscles agonists and antagonists, by working in resistance during large amplitude movements.
These criteria have led researchers to define a Active Vascular Gymnastics (AVG), a new physical method to strengthen vein walls of the lower limbs. The postural muscles appear as a real restraint of deep venous network. 80% of deep venous network is located inside the postural muscles of the lower limbs.
The venous system of lower limbs ensures the return of blood to the heart and lungs. It consists of a superficial venous network connected to a network embedded deep in muscles ensures the return of 90% of blood to the heart.
The veins of our legs are organized into two networks:
- A network of veins hidden deep within the muscles and therefore invisible;
- A network of superficial veins sometimes visible under the skin where they appear as blue nets.
These two networks communicate freely with each other through many channels of trade. While standing or sitting, gravity slows the venous circulation back to the heart. For the blood does not flow back under the influence of gravity when we are standing or sitting, the entire venous system of the legs has a very powerful system of anti-reflux valves.
Role of muscles that support the deep veins
The close connection between the tone of the calf muscles and the diameter of intra-muscular veins is known for a long time.
It was recently confirmed by a study-BED REST conducted by CNES (Center National d'Etudes Spatiales). To compensate for the venous dilatation due to muscle wasting, it was shown that the deep muscles known as postural muscles had a greater role on the venous return to the superficial muscles and he had to choose physical exercise can cause the same time the muscles agonists and antagonists, by working in resistance during large amplitude movements.
These criteria have led researchers to define a Active Vascular Gymnastics (AVG), a new physical method to strengthen vein walls of the lower limbs. The postural muscles appear as a real restraint of deep venous network. 80% of deep venous network is located inside the postural muscles of the lower limbs.
Comfort for the legs
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