Running in Space

Korolev, A. V.; Magnitskaya, N. E.; Ryazantsev, Mikhail N.; Logvinov, A.N.; Pilipson, Zhanna; Ilyin, Dmitriy

doi:10.1007/978-3-662-65064-6_31

Cited by 1 publication

(1 citation statement)

References 23 publications

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“…The Colbert treadmill is an advanced exercise device used at the space station to keep astronauts healthy and fit during long-term space missions 29 , 30 . The device has two modes of operation: active powered mode, wherein the treadmill is powered by an electric motor, and passive powered mode, wherein the runner presses his/her lower extremities against a moving treadmill belt 31 .…”

Section: Introductionmentioning

confidence: 99%

Numerical analysis of blood flow in the abdominal aorta under simulated weightlessness and earth conditions

Żyłka,

Górski,

Żyłka

et al. 2024

Sci Rep

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Blood flow through the abdominal aorta and iliac arteries is a crucial area of research in hemodynamics and cardiovascular diseases. To get in to the problem, this study presents detailed analyses of blood flow through the abdominal aorta, together with left and right iliac arteries, under Earth gravity and weightless conditions, both at the rest stage, and during physical activity. The analysis were conducted using ANSYS Fluent software. The results indicate, that there is significantly less variation in blood flow velocity under weightless conditions, compared to measurement taken under Earth Gravity conditions. Study presents, that the maximum and minimum blood flow velocities decrease and increase, respectively, under weightless conditions. Our model for the left iliac artery revealed higher blood flow velocities during the peak of the systolic phase (systole) and lower velocities during the early diastolic phase (diastole). Furthermore, we analyzed the shear stress of the vessel wall and the mean shear stress over time. Additionally, the distribution of oscillatory shear rate, commonly used in hemodynamic analyses, was examined to assess the effects of blood flow on the blood vessels. Countermeasures to mitigate the negative effects of weightlessness on astronauts health are discussed, including exercises performed on the equipment aboard the space station. These exercises aim to maintain optimal blood flow, prevent the formation of atherosclerotic plaques, and reduce the risk of cardiovascular complications.

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Section: Introductionmentioning

confidence: 99%