Výsledky vyhledávání - "Head-down bed rest"

Akademický článek

Assessment of the effect of 21-day head-down bed rest on the cardiovascular system by blood protein composition

Autor: Daria N. Kashirina, Ludmila Kh. Pastushkova, Anna G. Goncharova, Irina M. Larina

Publikováno v: Frontiers in Physiology, Vol 15 (2024)

Head-down bed rest (HDBR) is one of the models of the physiological effects of weightlessness used, among other things, to assess the effect of hypokinesia on the physiological systems of the human body and, first of all, on the cardiovascular system

Externí odkaz: https://doaj.org/article/1c3d6fccc24c4fd1b8ae7f374099a59e

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Akademický článek

Effect of 15 days −6° head-down bed rest on microbial communities of supragingival plaque in young men

Autor: Di Zhu, Pengyan Qiao, Qian Zhou, Hui Sun, Bingmu Xin, Bin Wu, Chuhua Tang

Publikováno v: Frontiers in Microbiology, Vol 15 (2024)

IntroductionThe microgravity environment astronauts experience during spaceflight can lead to an increased risk of oral diseases and possible changes in oral microecology. In this study, we aimed to assess changes in the microbial community of suprag

Externí odkaz: https://doaj.org/article/a5d434ff3ea941bbb13c9f32efafbbf6

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Akademický článek

Effects of Posture and Walking on Tibial Vascular Hemodynamics Before and After 14 Days of Head‐Down Bed Rest

Autor: Eric T Hedge, Laurence Vico, Richard L Hughson, Carmelo J Mastrandrea

Publikováno v: JBMR Plus, Vol 7, Iss 7, Pp n/a-n/a (2023)

ABSTRACT Human skeletal hemodynamics remain understudied. Neither assessments in weight‐bearing bones during walking nor following periods of immobility exist, despite knowledge of altered nutrient‐artery characteristics after short‐duration un

Externí odkaz: https://doaj.org/article/f85ece45f64d458cb55b443d1b7e0960

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Akademický článek

Modulation of vestibular input by short-term head-down bed rest affects somatosensory perception: implications for space missions

Autor: Roberto Gammeri, Adriana Salatino, Maria Pyasik, Emanuele Cirillo, Claudio Zavattaro, Hilary Serra, Lorenzo Pia, Donna R. Roberts, Anna Berti, Raffaella Ricci

Publikováno v: Frontiers in Neural Circuits, Vol 17 (2023)

IntroductionOn Earth, self-produced somatosensory stimuli are typically perceived as less intense than externally generated stimuli of the same intensity, a phenomenon referred to as somatosensory attenuation (SA). Although this phenomenon arises fro

Externí odkaz: https://doaj.org/article/90229910e25649b5b0445db62c83ff9c

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Akademický článek

Short-term head-down bed rest microgravity simulation alters salivary microbiome in young healthy men

Autor: Hui Sun, Qian Zhou, Pengyan Qiao, Di Zhu, Bingmu Xin, Bin Wu, Chuhua Tang

Publikováno v: Frontiers in Microbiology, Vol 13 (2022)

Microgravity influences are prevalent during orbital flight and can adversely affect astronaut physiology. Notably, it may affect the physicochemical properties of saliva and the salivary microbial community. Therefore, this study simulates micrograv

Externí odkaz: https://doaj.org/article/101ec68ed834466a9e1598c54795b8f8

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Akademický článek

Non-Invasive Skin Imaging Assessment of Human Stress During Head-Down Bed Rest Using a Portable Handheld Two-Photon Microscope

Autor: Junjie Wang, Zhen Zhen, Yanqing Wang, Runlong Wu, Yanhui Hu, Qiang Fu, Yongzhi Li, Bingmu Xin, Jinping Song, Jianwei Li, Yafei Ren, Lishuang Feng, Heping Cheng, Aimin Wang, Liming Hu, Shukuan Ling, Yingxian Li

Publikováno v: Frontiers in Physiology, Vol 13 (2022)

Spaceflight presents a series of physiological and pathological challenges to astronauts resulting from ionizing radiation, microgravity, isolation, and other spaceflight hazards. These risks cause a series of aging-related diseases associated with i

Externí odkaz: https://doaj.org/article/aff1a7590e41417f92fa7a43f2ce96ac

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Akademický článek

Effects of 15-Days −6° Head-Down Bed Rest on the Attention Bias of Threatening Stimulus

Autor: Shan Jiang, YI-Ming Qian, Yuan Jiang, Zi-Qin Cao, Bing-Mu Xin, Ying-Chun Wang, Bin Wu

Publikováno v: Frontiers in Psychology, Vol 13 (2022)

Previous researchers have found that head-down bed rest (HDBR) will affect the emotional state of individuals, and negative emotions such as anxiety are closely related to attention bias. The present study adopted the dot-probe task to evaluate the e

Externí odkaz: https://doaj.org/article/aef7d3ccfbd94fbbb4ae0586c25cfc0e

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Effects of 15-Day Head-Down Bed Rest on Emotional Time Perception

Autor: Yiming Qian, Shan Jiang, Xiaolu Jing, Yusheng Shi, Haibo Qin, Bingmu Xin, Lizhong Chi, Bin Wu

Publikováno v: Frontiers in Psychology, Vol 12 (2021)

Accurate time perception is clearly essential for the successful implementation of space missions. To elucidate the effect of microgravity on time perception, we used three emotional picture stimuli: neutral, fear, and disgust, in combination with a

Externí odkaz: https://doaj.org/article/48ebe3bc593742c881b7f748c75a1c67

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Evaluation of Cardiac Circadian Rhythm Deconditioning Induced by 5-to-60 Days of Head-Down Bed Rest

Autor: Sarah Solbiati, Alba Martin-Yebra, Pierre Vaïda, Enrico G. Caiani

Publikováno v: Frontiers in Physiology, Vol 11 (2021)

Head-down tilt (HDT) bed rest elicits changes in cardiac circadian rhythms, generating possible adverse health outcomes such as increased arrhythmic risk. Our aim was to study the impact of HDT duration on the circadian rhythms of heart beat (RR) and

Externí odkaz: https://doaj.org/article/9594e059c0b64f82952885b7996d6f2a

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