Results 81 to 90 of about 10,282 (219)

ATHLETIC: An exoskeleton countermeasure exercise device for resistive and plyometric training in deep‐space missions

Experimental Physiology, EarlyView.
Abstract Prolonged exposure to weightlessness leads to loss of muscle and bone mass. Therefore, astronauts on board the International Space Station (ISS) currently perform mandatory daily exercises. ISS missions usually last 6 months, and future missions will become significantly longer when going, for example, to Mars.
Jonas Böcker, Jochen Zange, Torsten Siedel, Guillaume Fau, Sebastian Langner, Thomas Krueger, Jörn Rittweger   +6 more
wiley   +1 more source

Cerebrovascular pulsatility following long duration spaceflight is associated with changes in pulse pressure and carotid artery stiffness

Experimental Physiology, EarlyView.
Abstract Central artery stiffening increases the haemodynamic pulsations transmitted downstream towards target organs, including the brain. While recent evidence suggests that long duration spaceflight is associated with reduced common carotid artery (CCA) distensibility, cerebrovascular pulsatility has not been extensively characterized in astronauts.
Roxanne Fournier, Danielle K. Greaves, J. Kevin Shoemaker, Philippe Arbeille, Richard L. Hughson, Andrew D. Robertson   +5 more
wiley   +1 more source

Lunar and Martian gravity alter immune cell interactions with endothelia in parabolic flight

npj Microgravity
Returning to the moon and traveling to Mars represent the main targets of human space exploration missions within the upcoming decades. Comparable to microgravity, partial gravity in these destinations is assumed to dysregulate immune functions, thereby ...
Yu Du, Bing Han, Katharina Biere, Nathalie Abdelmalek, Xinyu Shu, Chaoyang Song, Guangyao Chen, Ning Li, Marina Tuschen, Huan Wu, Shujin Sun, Alexander Choukér, Mian Long, Dominique Moser   +13 more
doaj   +1 more source

Application of Microgravity Experiments in Plastic Surgery: A Literature Review

Plastic and Reconstructive Surgery, Global Open
Background:. Interest in microgravity is growing in the medical and surgical fields. This literature review aims to synthesize existing evidence on microgravity applications in plastic surgery, focusing on experimental methods, outcomes, and prospects ...
Jonathan Cornacchini, MD, Yanis Berkane, MD, PhD, Vlad Tereshenko, MD, PhD, Olivier Camuzard, MD, PhD, Alexandre G. Lellouch, MD, PhD, Elise Lupon, MD, PhD   +5 more
doaj   +1 more source

Spaceborne and spaceborn: Physiological aspects of pregnancy and birth during interplanetary flight

Experimental Physiology, EarlyView.
Abstract Crewed interplanetary return missions that are on the planning horizon will take years, more than enough time for initiation and completion of a pregnancy. Pregnancy is viewed as a sequence of processes – fertilization, blastocyst formation, implantation, gastrulation, placentation, organogenesis, gross morphogenesis, birth and neonatal ...
Arun V. Holden
wiley   +1 more source

Microgravity‐induced changes in skeletal muscle and possible countermeasures: What we can learn from bed rest and human space studies

Experimental Physiology, EarlyView.
Abstract Despite exercise countermeasures to sustain health and performance in spaceflight, complete maintenance of muscle mass and functions in microgravity is still not possible for most astronauts. The principal cause of the limited effectiveness of existing exercise countermeasures is the difficulty in achieving full loading forces in space.
Alessandra Bosutti, Bergita Ganse, Nicola A. Maffiuletti, Rob C. I. Wüst, Gustav J. Strijkers, Andy Sanderson, Hans Degens   +6 more
wiley   +1 more source

Evaporation of Nanofluid Sessile Droplets Under Marangoni and Buoyancy Effects: Internal Convection and Instability

Nanomaterials
Previous research has studied the evolution of patterns during the evaporation of sessile droplets of pure liquid, although there is a lack of reports focusing on the transition of flow regimes and flow stability of nanofluids.
Yuequn Tao, Zhiqiang Zhu
doaj   +1 more source

The effect of bed rest, unilateral limb immobilization and head‐down tilt on muscle protein synthesis: A systematic review and meta‐analysis

Experimental Physiology, EarlyView.
Abstract Muscle disuse leads to muscle atrophy and a decrease in muscle function that is primarily driven by reduced muscle protein synthesis (MPS). The aim of this systematic review and meta‐analysis was to examine the effect of different models of muscle disuse on rates of MPS.
Konstantinos Prokopidis, Paul T. Morgan, Colleen S. Deane, Oliver C. Witard, David D. Church   +4 more
wiley   +1 more source

Temporary effects of random positioning on the function and plasticity of proliferating monocytes

Scientific Reports
The Random Positioning Machine (RPM) is used in the field of gravitational biology and space medicine. Rotational bioreactors such as the RPM create dynamic suspension cultures, providing shear stress, a crucial factor in circulatory homeostasis, but ...
Shannon Marchal, Anna Dittrich, Nadine Becker, Katrin Vogel, Lisette Fickenscher, José Luis Cortés Sánchez, Stefan Kahlert, Rasika Murkar, Daniela Grimm, Marcus Krüger   +9 more
doaj   +1 more source

Non-Keplerian Charged Accretion Disk Orbiting a Black Hole Pulsar

Universe
Recent studies have focused on how spinning black holes (BHs) within a binary system containing a strongly magnetized neutron star, then immersed in external magnetic fields, can acquire charge through mechanisms like the Wald process and how this charge
Audrey Trova, Eva Hackmann
doaj   +1 more source