Results 51 to 60 of about 9,964 (184)

Effect of artificial gravity on calcaneal bone marrow adipose tissue and mineral content in female and male participants in 60 days of bed rest

Experimental Physiology, EarlyView.
Abstract Modulation of bone marrow adipose tissue (BMAT) with prolonged inactivity was reported in haemopoietic but not in non‐haemopoietic bones. This prospective randomized controlled trial submitted 16 men and 8 women to 60 days of 6° head‐down‐tilt bed rest.
Tammy Liu, Gerd Melkus, Tim Ramsay, Alain Berthiaume, Gabriele Armbrecht, Guy Trudel   +5 more
wiley   +1 more source

Orthostatic intolerance and presyncopal states in young adults

Journal of Education, Health and Sport
Introduction and purpose: Orthostatic intolerance is an increasingly recognized disturbance of circulatory regulation in young adults, particularly in academic settings where characteristic lifestyle patterns promote autonomic imbalance. The aim of this
Michał Karol, Kamila Koseska, Jan Borowicz, Bartosz Górecki, Kinga Kloch, Patryk Romaniuk, Mariia-Khrystyna Lohin, Aleksandra Strawińska, Małgorzata Bednarczyk   +8 more
doaj   +1 more source

Women in space: A review of known physiological adaptations and health perspectives

Experimental Physiology, EarlyView.
Abstract Exposure to the spaceflight environment causes adaptations in most human physiological systems, many of which are thought to affect women differently from men. Since only 11.5% of astronauts worldwide have been female, these issues are largely understudied.
Millie Hughes‐Fulford, Danielle J. Carroll, Heather C. M. Allaway, Bonnie J. Dunbar, Aenor J. Sawyer   +4 more
wiley   +1 more source

Postural tachycardia during head-up tilt test predicts persistent orthostatic intolerance in young adults

Zdravniški Vestnik, 2013
Background: Head-up tilt (HUT) test is an important tool in establishing the cause of past syncope. As postural tachycardia is associated with orthostatic intolerance, we hypothesise that heart rate (HR) increase during the early phase of HUT can be used
Mojca Kirbiš, Fajko F. Bajrović, Mojca Čižek Sajko, Bernard Meglič, Anton Grad   +4 more
doaj  

Low Sensitivity of Abbreviated Tilt Table Testing for Diagnosing Postural Tachycardia Syndrome in Adults With ME/CFS

Frontiers in Pediatrics, 2018
Introduction: Orthostatic intolerance is common among individuals with myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS). In some ME/CFS case definitions, orthostatic intolerance is considered a core feature of the disorder.
C. (Linda) M. C. van Campen, Peter C. Rowe, Frans C. Visser   +2 more
doaj   +1 more source

Syndromes of orthostatic intolerance: a hidden danger [PDF]

Journal of Internal Medicine, 2013
AbstractOrthostatic hypotension (OH) is a relatively common heterogenous and multifactorial disorder, traditionally classified as neurogenic (less common but often more severe) or nonneurogenic (more common, with no direct signs of autonomic nervous system disease).
A, Fedorowski, O, Melander
openaire   +2 more sources

An eye on long‐duration spaceflight: Controversies, countermeasures and challenges

Experimental Physiology, EarlyView.
Abstract Space flight‐associated neuroocular syndrome (SANS) is a consequence of long‐duration space flight and is detected in two‐thirds of astronauts. In‐flight, this can cause a change in the refraction of the eyes, requiring graded hypermetropic ‘superfocus adjustable’ glasses, optic nerve head oedema and choroidal folds.
Vincent Wing Sum Ng, Susan Patricia Mollan   +1 more
wiley   +1 more source

Orthostatic intolerance after space flight [PDF]

The Journal of Physiology, 2002
Physiologists have always been challenged by the adjustments of the human body to hostile environments. The set of papers in this issue of The Journal of Physiology (Cox et al. 2002; Ertl et al. 2002; Levine et al. 2002) fits into the tradition of the study of human responses to extreme physical circumstances.
Wieling, Wouter, Halliwill, John R., Karemaker, John M.   +2 more
openaire   +2 more sources

Blood flow restriction: The acute effects of body tilting and reduced gravity analogues on limb occlusion pressure

Experimental Physiology, EarlyView.
Abstract Blood flow restriction (BFR) has been identified as a potential countermeasure to mitigate physiological deconditioning during spaceflight. Guidelines recommend that tourniquet pressure be prescribed relative to limb occlusion pressure (LOP); however, it is unclear whether body tilting or reduced gravity analogues influence LOP.
Patrick Swain, Nick Caplan, Luke Hughes
wiley   +1 more source

Demographic and clinical features of pediatric patients with orthostatic intolerance and an abnormal head-up tilt table test; A retrospective descriptive study

Pediatrics and Neonatology, 2020
Background: Clinical presentation varies in children with Orthostatic Intolerance. This study aimed to evaluate the epidemiological and clinical characteristics of pediatric patients with orthostatic intolerance (OI) and positive head-up tilt test (HUTT).
Anand Gourishankar, Mathew D. Belton, S. Shahrukh Hashmi, Ian J. Butler, Jeremy E. Lankford, Mohammed T. Numan   +5 more
doaj   +1 more source