Zobrazeno 1 - 10
of 31
pro vyhledávání: '"Suzanne M. Fortney"'
Autor:
Alan R. Hargens, Barbara S. Bennett, Gita Murthy, Richard E. Ballard, Stuart M. C. Lee, Suzanne M. Fortney, Steve R. Ford, Donald E. Watenpaugh
Publikováno v:
Medicine & Science in Sports & Exercise. 29:892-900
Adaptation to bed rest or space flight is accompanied by an impaired ability to exercise in an upright position. We hypothesized that a daily, 30-min bout of intense, interval exercise in upright posture or supine against lower body negative pressure
Publikováno v:
Comprehensive Physiology
Prolonged rest in bed has been utilized by physicians and other health-care workers to immobilize and confine patients for rehabilitation and restoration of health since time immemorial. The sitting or horizontal position is sought by the body to rel
Autor:
F. C. O'Connor, Andrew P. Goldberg, J. L. Fleg, Gary Gerstenblith, Steven P. Schulman, Edward G. Lakatta, Lewis C. Becker, Suzanne M. Fortney
Publikováno v:
Journal of Applied Physiology. 77:1500-1506
It is unclear whether the markedly enhanced aerobic exercise capacity of older endurance-trained men relative to their sedentary age peers is mediated primarily by central or peripheral cardiovascular mechanisms. To address this question, we performe
Autor:
Claire M. Lathers, Mary Anne Bassett Frey, John B. Charles, John E. Davis, Suzanne M. Fortney
Publikováno v:
The Journal of Clinical Pharmacology. 34:387-393
Many astronauts experience intolerance to orthostatic stress after space flight, despite the ingestion of salt tablets and water equivalent to 0.9% saline just before their return to Earth. Previous research indicates that the ingestion of 1.07% sali
Publikováno v:
Journal of Applied Physiology. 74:286-292
Increased leg compliance (LC) has been proposed as a mechanism for orthostatic intolerance after spaceflight or bed rest. Using venous occlusion plethysmography with mercury-in-Silastic strain gauge, we evaluated LC before, during, and after a 13-day
Autor:
Suzanne M. Fortney
Publikováno v:
The Journal of Clinical Pharmacology. 31:888-892
Exposure to prolonged (1-4 hr) lower body negative pressure (LBNP) is a countermeasure against postflight orthostatic intolerance which is used in the Soviet space program and planned for use in the American space program. LBNP in combination with fl
Autor:
Suzanne M. Fortney, Patricia A. Holler
Publikováno v:
SAE Technical Paper Series.
Autor:
Adrian LeBlanc, Suzanne M. Fortney, Michael C. Greenisen, R. Rowe, Elisabeth Spector, John P. McCarthy, Stuart M. C. Lee, Janice M. Yelle, Marcas M. Bamman
Publikováno v:
European journal of applied physiology and occupational physiology. 76(1)
Resistance exercise has been suggested to increase blood volume, increase the sensitivity of the carotid baroreceptor cardiac reflex response (BARO), and decrease leg compliance, all factors that are expected to improve orthostatic tolerance. To furt
Publikováno v:
Journal of applied physiology (Bethesda, Md. : 1985). 77(6)
Head-down bed rest is used to model physiological changes during spaceflight. We postulated that bed rest would decrease the degree of complex physiological heart rate variability. We analyzed continuous heart rate data from digitized Holter recordin
Autor:
Mary Anne Bassett Frey, Victor S. Schneider, John B. Charles, Claire M. Lathers, Suzanne M. Fortney
Publikováno v:
Journal of clinical pharmacology. 34(6)
This study examined the heart rate response to lower body negative pressure (LBNP) during 17 weeks of horizontal bed rest to estimate the development and duration of orthostatic instability elicited by this model for space flight. Based on data from