The importance of inflight blood circulation and muscle relaxation:

When we walk, the leg muscle action helps return venous blood to the heart. Sitting in the same position for a long period of time can slow this process and, in some

people, leads to swelling in the feet. Some studies have shown that immobility associated with travel of longer than four hours (by air, car or rail) can also lead to an increased risk of deep vein thrombosis (DVT) or clotting in the legs. Personal factors that increase the risk of DVT include the following: Age over 40 years Personal or family history of DVT or pulmonary embolus Recent surgery or injury, especially to the lower limbs, pelvis or abdomen Cancer Inherited or other blood disorders leading to clotting tendency Pregnancy Oestrogen therapy (oral contraceptive pill or hormone replacement therapy) There are a number of ways to help reduce the possibility of DVT, including the following: Avoid leg-crossing while seated Ensure adequate hydration Minimise alcohol and caffeine intake before and during your flight Wear comfortable, loose-fitting clothes During your flight, move your legs and feet for three to four minutes per hour while seated and move about the cabin occasionally Do the light exercises we recommend here (opposite page) and through the inflight entertainment system If you have concerns about your health and flying, or feel that you may be at risk of DVT, Qantas recommends you talk to your doctor before travelling. Additional measures such as well-fitted compression stockings or anticlotting medication may be recommended for high-risk individuals.