Search Results - "Blomqvist, C. G."

Simultaneous determination of the accuracy and precision of closed-circuit cardiac output rebreathing techniques by Jarvis, S. S, Levine, B. D, Prisk, G. K, Shykoff, B. E, Elliott, A. R, Rosow, E, Blomqvist, C. G, Pawelczyk, J. A

“…1 Department of Kinesiology, Pennsylvania State University, University Park, Pennsylvania; 2 Institute for Exercise and Environmental Medicine, University of…”
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Orthostatic intolerance after spaceflight by Buckey, Jr, J C, Lane, L D, Levine, B D, Watenpaugh, D E, Wright, S J, Moore, W E, Gaffney, F A, Blomqvist, C G

“…Orthostatic intolerance occurs commonly after spaceflight, and important aspects of the underlying mechanisms remain unclear. We studied 14 individuals supine…”
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Cardiac atrophy after bed rest and spaceflight by Perhonen, Merja A, Franco, Fatima, Lane, Lynda D, Buckey, Jay C, Blomqvist, C. Gunnar, Zerwekh, Joseph E, Peshock, Ronald M, Weatherall, Paul T, Levine, Benjamin D

“…Institute for Exercise and Environmental Medicine, Presbyterian Hospital of Dallas and Department of Internal Medicine and Radiology, University of Texas…”
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Central venous pressure in space by Buckey, Jr, J C, Gaffney, F A, Lane, L D, Levine, B D, Watenpaugh, D E, Wright, S J, Yancy, Jr, C W, Meyer, D M, Blomqvist, C G

“…Gravity affects cardiac filling pressure and intravascular fluid distribution significantly. A major central fluid shift occurs when all hydrostatic gradients…”
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Cerebral versus systemic hemodynamics during graded orthostatic stress in humans by Levine, B. D., Giller, C. A., Lane, L. D., Buckey, J. C., Blomqvist, C. G.

“…BACKGROUND: Orthostatic syncope is usually attributed to cerebral hypoperfusion secondary to systemic hemodynamic collapse. Recent research in patients with…”
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Maximal exercise performance after adaptation to microgravity by Levine, B D, Lane, L D, Watenpaugh, D E, Gaffney, F A, Buckey, J C, Blomqvist, C G

“…The cardiovascular system appears to adapt well to microgravity but is compromised on reestablishment of gravitational forces leading to orthostatic…”
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Regulation of muscle sympathetic nerve activity after bed rest deconditioning by Pawelczyk, J A, Zuckerman, J H, Blomqvist, C G, Levine, B D

“…Cardiovascular deconditioning reduces orthostatic tolerance. To determine whether changes in autonomic function might produce this effect, we developed…”
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Evidence for increased beta-adrenoreceptor responsiveness induced by 14 days of simulated microgravity in humans by Convertino, V. A., Polet, J. L., Engelke, K. A., Hoffler, G. W., Lane, L. D., Blomqvist, C. G., Eckberg, D. L.

“…We studied hemodynamic responses to alpha- and beta-receptor agonists in eight healthy men before and after 14 days of 6 degrees head-down tilt (HDT) to test…”
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Regulation of the systemic circulation at microgravity and during readaptation to 1G by Blomqvist, G. C.

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Central venous pressure and cardiac function during spaceflight by White, Ronald J, Blomqvist, C. Gunnar

“…1  Baylor College of Medicine, Houston, Texas 77030; and 2  University of Texas Southwestern Medical Center, Dallas, Texas 75235 Early in spaceflight, an…”
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Left ventricular pressure-volume and Frank-Starling relations in endurance athletes. Implications for orthostatic tolerance and exercise performance by Levine, B D, Lane, L D, Buckey, J C, Friedman, D B, Blomqvist, C G

“…Endurance athletes have a high incidence of orthostatic intolerance. We hypothesized that this is related to an abnormally large decrease in left ventricular…”
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Effects of spaceflight on human calf hemodynamics by Watenpaugh, Donald E, Buckey, Jay C, Lane, Lynda D, Gaffney, F. Andrew, Levine, Benjamin D, Moore, Willie E, Wright, Sheryl J, Blomqvist, C. Gunnar

“…Departments of Physiology and Internal Medicine, University of Texas Southwestern Medical Center, Dallas, Texas 75235 Chronic microgravity may modify…”
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Repeated plasma volume determination with the Evans Blue dye dilution technique: the method and a computer program by Foldager, N, Blomqvist, C G

“…This paper describes a reliable multiple sample Evans Blue dye dilution technique and a Pascal program which computes plasma and blood volume on the basis of…”
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Physical fitness and cardiovascular regulation: mechanisms of orthostatic intolerance by Levine, B D, Buckey, J C, Fritsch, J M, Yancy, Jr, C W, Watenpaugh, D E, Snell, P G, Lane, L D, Eckberg, D L, Blomqvist, C G

“…We studied three groups of eight men each--high, mid, and low fit (peak O2 consumption 60.0 +/- 0.8, 48.9 +/- 1.0, and 35.7 +/- 0.9 ml.min-1.kg-1)--to…”
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Maximal vascular leg conductance in trained and untrained men by Snell, P G, Martin, W H, Buckey, J C, Blomqvist, C G

“…Lower leg blood flow and vascular conductance were studied and related to maximal oxygen uptake in 15 sedentary men (28.5 +/- 1.2 yr, mean +/- SE) and 11…”
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Human baroreflex rhythms persist during handgrip and muscle ischaemia by Eckberg, D. L., Cooke, W. H., Diedrich, A., Levine, B. D., Pawelczyk, J. A., Buckey Jr, J. C., Ertl, A. C., Biaggioni, I., Cox, J. F., Robertson, D., Baisch, F. J., Blomqvist, C. G., Kuusela, T. A., Tahvanainen, K. U. O.

“…Aim To determine whether physiological, rhythmic fluctuations of vagal baroreflex gain persist during exercise, post‐exercise ischaemia and recovery. Methods…”
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Density of lean body mass is greater in blacks than in whites by Schutte, J E, Townsend, E J, Hugg, J, Shoup, R F, Malina, R M, Blomqvist, C G

“…Previous studies have reported that Blacks have 10-20% more bone mineral than Whites of the same height. Theoretically, this should mean that the lean body…”
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Deficiency of skeletal muscle succinate dehydrogenase and aconitase : pathophysiology of exercise in a novel human muscle oxidative defect by HALLER, R. G, HENRIKSSON, K. G, HALL, R. E, THUILLIER, P, KENNAWAY, N. G, LEWIS, S. F, JORFELDT, L, HULTMAN, E, WIBOM, R, SAHLIN, K, ARESKOG, N.-H, GUNDER, M, AYYAD, K, BLOMQVIST, C. G

“…We evaluated a 22-yr-old Swedish man with lifelong exercise intolerance marked by premature exertional muscle fatigue, dyspnea, and cardiac palpitations with…”
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Cardiovascular responses to exercise as functions of absolute and relative work load by Lewis, S F, Taylor, W F, Graham, R M, Pettinger, W A, Schutte, J E, Blomqvist, C G

“…The roles of absolute and relative oxygen uptake (VO2 and percent of muscle group specific VO2 max) as determinants of the cardiovascular and ventilatory…”
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Left ventricular performance in normal subjects: a comparison of the responses to exercise in the upright and supine positions by Poliner, L R, Dehmer, G J, Lewis, S E, Parkey, R W, Blomqvist, C G, Willerson, J T

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