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Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.
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Long Duration Head-down Tilt Bed Rest Studies: Safety Considerations Regarding Vision Health
No abstract available
70 Days of 6 Degrees-head Down Tilt Bed Rest and its Impact on Ocular Parameters
No abstract available
High Intensity Exercise Countermeasures do not Prevent Orthostatic Intolerance following Prolonged Bed Rest
No abstract available
The Effects of Long Duration Head Down Tilt Bed Rest on Neurocognitive Performance: Extent, Longevity, & Neural Bases
No abstract available
Integrated Resistance and Aerobic Training: Cardiovascular and Skeletal Muscle Fitness During 70 Days Of Bed Rest
No abstract available
Effects of Mild Hypercapnia During Head-Down Bed Rest on Ocular Structures, Cerebral Blood Flow, aud Visual Acuity in Healthy Human Subjects
The cephalad fluid shift induced by microgravity has been hypothesized to cause an elevation in intracranial pressure (ICP) and contribute to the development of the Visual Impairment/Intracranial Pressure (VIIP) syndrome, as experienced by some astronauts during long-duration space flight. Elevated ambient partial pressure of carbon dioxide (PCO2) on ISS may also raise ICP and contribute to VIIP development. We seek to determine if the combination of mild CO2 exposure, similar to that occurring on the International Space Station, with the cephalad fluid shift induced by head-down tilt, will induce ophthalmic and cerebral blood flow changes similar to those described in the VIIP syndrome. We hypothesize that mild hypercapnia in the head-down tilt position will increase choroidal blood volume and cerebral blood flow, raise intraocular pressure (IOP), and transiently reduce visual acuity as compared to the seated or the head-down tilt position without elevated CO2, respectively.
Ocular Outcomes Comparison Between 14- and 70-day Head-down Tilt Bed Rest
No abstract available
Comparison of Structural and Functional Ocular Outcomes Between 14- and 70-Day Bed Rest
To compare structural and functional ocular outcomes between14-and 70-day HDTBR in healthy human subjects.
Behavioral, Brain Imaging, and Genomic Measures to Predict Functional Outcomes After Bed Rest and Spaceflight
No abstract available
Using Dense Phenotyping and Cluster Analysis to Identify Subgroups Associated with Deconditioning in Bed Rest
No abstract available
Mitigating Effects of Exercise and Testosterone on Aerobic Fitness in Healthy Adults during 70-days of Head Down Bed Rest
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B Complex: 5-Methyltetrahydrofolate, Riboflavin, Pyridoxine, and Methylcobalamin Supplementation as a Countermeasure to Mitigate Optic Disc Edema Changes During Strict 6-degree HDT Bed Rest
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Exploring Endothelial Function Risk Factors and Optic Disc Edema Changes During Strict 6º Head-Down Tilt Bed Rest
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Bone Metabolism during Strict Head-Down Tilt Bed Rest and CO2 Exposure
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