Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 39 for “"Deconditioning"”.
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A Wearable Countermeasure for Musculoskeletal Deconditioning in Human Spaceflight
… Skinsuit (GLCS or Skinsuit) is a musculoskeletal deconditioning countermeasure for spaceflight, consisting of a skin-tight garment that applies a vertical load from the shoulders to the feet. The suit aims to mitigate musculoskeletal deconditioning (potentially including spine, muscle, and …
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The artificial gravity sleeper--a deconditioning countermeasure for long duration space habitation
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1988.
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Artificial gravity as a countermeasure to spaceflight deconditioning : the cardiovascular response to a force gradient
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1997.
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The gravity loading countermeasure skinsuit : a passive countermeasure garment for preventing musculoskeletal deconditioning during long-duration spaceflight
… of long-duration spaceflight is physiological deconditioning seen in the absence of gravity. Negative changes in bone, muscle, and other physiological systems occur rapidly in space, and have the potential to severely limit the human space exploration program. The deficits in bone are mostly …
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A critical benefit analysis of artificial gravity as a microgravity countermeasure
… developed over the decades to combat this deconditioning. However, these countermeasures are system specific and have proven to be only partially effective. Artificial gravity has been persistently discussed as a countermeasure that potentially has salutary effects on all physiological …
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Dietary calcium and cation-anion difference influences calcium status and bone remodeling in exercising and sedentary Arabian horses
… status would be affected by conditioning and deconditioning, and by dietary Ca and cationanion difference (DCAD). In experiment one, 12 Arabian horses were conditioned for 12 wk on a high speed equine treadmill. Diets were designated LH, which contained low Ca (.35%)-high Cl (.6%), LL, low …
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Exercise under artificial gravity - experimental and computational approaches
Humans experience strong physiological deconditioning during space missions, primarily due to the weightlessness conditions. Some of these adverse consequences include bone loss, muscle atrophy, sensory-motor deconditioning, and cardiovascular adaptation, which may lead to orthostatic intolerance …
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Enhanced dynamic load sensor for the International Space Station : design, development, musculoskeletal modeling and experimental evaluation
… muscle mass, strength and endurance. Such deconditioning may impede critical astronaut activities and presents an increased injury risk during flight and when exposed to increased gravity like that of Earth or Mars. Exercise countermeasures are used extensively on the International Space …
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A Novel Resistance Exercise Machine for Use in a Lower Body Negative Pressure Box to Counteract the Effects of Weightlessness
<p>Physiological deconditioning is a critical problem in space, especially during long-term missions. Resistance exercise coupled with lower body negative pressure (LBNP) has been shown to be effective in counteracting some of the deconditioning related problems. This thesis describes the …
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Exercise protocols during short-radius centrifugation for artificial gravity
… spaceflight results in severe physiological deconditioning, threatening the success of interplanetary travel. Exercise combined with artificial gravity provided by centrifugation may be the comprehensive countermeasure needed to prevent such deconditioning. The aims of this study were (1) to …
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Factors limiting the exercise tolerance of patients with end-stage renal failure undergoing maintenance haemodialysis
… and myopathy, malnutrition and general physical deconditioning are responsible for the poor exercise tolerance. The present thesis was therefore designed to study whether central cardiovascular function or anaemia or muscle weakness causes patients with end-stage renal failure to terminate …
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Understanding vertebral fracture risk in astronauts
… missions and return to Earth after prolonged deconditioning. Our lab has developed a musculoskeletal model of the thoracolumbar spine that has been validated for spinal loading, but has not yet been extended to maximal effort activities or full-body simulations.
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Effects of acute and chronic exercise on forearm blood flow in patients with chronic heart failure
… which may lead to reduced peripheral blood flow, deconditioning and skeletal muscle atrophy. Initially, a study of the biological and technical reliability of the techniques used in the latter chapters was conducted. Reliability of these techniques has not previously been documented in a …
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A gait generation mechanism for leg rehabilitation therapy
… has been shown to be associated with rapidly deconditioning and other co-morbidities. Rehabilitation techniques that afford patients the ability to begin reconditioning through walking sooner may ultimately enhance their return to a better quality of life. The overall goal of this study is to …
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Scales modified for use on board the human centrifuge in the MIT Man Vehicle Lab
… important in preventing microgravity-induced deconditioning of the body and without exercise a deconditioned subject might not be able to withstand the stress of experiencing artificial gravity. The primary focus of the research is to gain a better understanding of the overall effects …
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A Clinical Nurse Leader Initiative: Promoting Mobility Among Long-Term Care Facility Residents
… after a stroke or surgical procedure, deconditioning, respite care, skilled nursing or wound care, and younger veterans admitted for neurocognitive rehabilitation for post-traumatic stress disorder (PTSD) and/or traumatic brain injury (TBI). The CNL project consisted of process …
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Artificial gravity : changing the intensity of coriolis cross-coupled stimulus with head-angle
… is a promising method for preventing the serious deconditioning associated with prolonged exposure to weightlessness. Unfortunately, head-movements in a rotating environment create Coriolis cross-coupled stimuli that introduce problematic vestibular responses. Earlier studies have shown that it is …
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Exercise in artificial gravity
… of dual countermeasures to address space flight deconditioning of the musculoskeletal and cardiovascular systems, by combining centrifugation with lower-body exercise. The exercise device is a small stair-stepper with constant resistance provided by dampers beneath each foot, and is the first …
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Ampligen therapy, exercise capacity and immune function in patients with chronic fatigue syndrome
… Improvements in peak V02 were small but deconditioning in subjects might be a possible explanation. The exact cause of CFS remains unknown but with continued research it may yet be possible to increase our understanding of CFS.</p>
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