Zobrazeno 1 - 10
of 19
pro vyhledávání: '"J. R. Blackmon"'
Publikováno v:
The American journal of physiology. 261(5 Pt 2)
Our objective was to determine whether the chemoreflex from human muscle is elicited by small graded reductions in muscle blood flow (MBF) during mild exercise or whether this reflex has an obvious threshold associated with large changes in femoral v
Autor:
L. B. Rowell, J. R. Blackmon
Publikováno v:
Clinical Physiology. 7:349-376
Summary. Traditionally, cardiovascular adjustments to hypoxaemia are viewed as resultants of competing local vasodilation and vasoconstriction via arterial chemo-reflexes with net effects of increased cerebral and coronary blood flows (local) and red
Autor:
J. R. Blackmon, L. B. Rowell
Publikováno v:
American Journal of Physiology-Heart and Circulatory Physiology. 251:H562-H570
A three-part experiment was designed to show whether hypoxemia alters splanchnic vasomotor responses to other stresses by vasodilating splanchnic organs, preventing norepinephrine (NE)-induced vasoconstriction, or altering total sympathetic nervous a
Autor:
Loring B. Rowell, J. R. Blackmon
Publikováno v:
American Journal of Physiology-Heart and Circulatory Physiology. 255:H760-H764
Venomotor responses, measured as the pressure rise in occluded forearm veins, were used in a two-part experiment to test presence or absence of sympathetic neuroeffector mechanisms in 10 men made moderately to severely hypoxemic. In part I, forearm v
Autor:
L. B. Rowell, J. R. Blackmon
Publikováno v:
Clinical Physiology. 9:269-277
Summary. Our question was whether the reduced orthostatic tolerance that accompanies hypoxaemia in some (not all) subjects might be associated with an abnormally large release of adrenaline. Eight normal young men were exposed to lower body negative
Publikováno v:
American Journal of Physiology-Heart and Circulatory Physiology. 247:H251-H258
To determine whether hypoxia increases splanchnic vasoconstriction and impedes splanchnic metabolism during exercise, 11 subjects were exercised for 72 min at O2 uptake (VO2) of 1.8 1/min; 11% O2 was breathed during 30-50 min. Splanchnic blood flow (
Publikováno v:
Journal of Applied Physiology. 32:213-220
Three-part experiment in which five subjects were exposed to lower body negative pressure (LBNP) at -50 mm Hg below the iliac crests. Duration of LBNP to earliest vagal symptoms was 7 to 21 min; all data are expressed as changes from control period t
Publikováno v:
Pediatrics. 32:742-756
1. Several approaches to assessment of physical work capacity in the upright posture in normal adults and cardiac patients have been reviewed critically. 2. Preliminary experience has been presented with a new multistage treadmill test of maximal exe
Publikováno v:
Journal of applied physiology. 41(5 Pt. 1)
Responses of heart rate (HR), mean arterial blood pressure (MAP) ventilation (VE), and forearm blood flow (FBF) to different degrees of leg muscle ischemia were measured in eight subjects in a four-part experiment. Part I.Total circulatory occlusion
Autor:
L. B. Rowell, J. R. Blackmon
Publikováno v:
The American journal of physiology. 251(5 Pt 2)
Splanchnic metabolism of O2, glucose, and lactate was studied in five normal men during rest while breathing air, 10.4% O2 [arterial O2 partial pressure (PaO2) = 34.8 Torr], and in four men breathing 7.6% O2 (PaO2 = 27.0 Torr). Despite reduction in a