Effect of leg exercises on popliteal venous blood flow during prolonged immobility of seated subjects: implications for prevention of travel-related deep vein thrombosis.

摘要: Summary. Background: Venous stasis is an important contributing factor in the development of travel-related deep vein thrombosis. This study examined factors affecting popliteal venous blood flow order to determine most effective exercise regimen prevent stasis. Methods: Twenty-one healthy subjects were randomly assigned various activities over a 9-week period. Subjects remained seated throughout investigation and 3660 duplex ultrasound examinations performed by single examiner using SonoSite 180 Plus handheld ultrasound. Baseline velocity, cross-sectional area volume sitting motionless assessed first 3 weeks.The remaining 6 weeks involved performing airline-recommended activities, foot exercises, exercises against moderate resistance increased beneficial method for enhancing flow. Sitting with feet not touching floor effect sleeping also assessed. Results: The median age was 22 years (range: 18–25.5 years), height 171 cm (162.5–180.5 cm) body mass index 25.3 kg m–2 (23.2–26.3 kg m–2). Blood reduced almost 40% immobility 2-fold when floor. Foot positively enhanced (P < 0.0001). Conclusion: Leg regimens during prolonged subjects, reinforcing importance regular leg movement sitting, such as long-distance travel.