Cardiovascular responses to dynamic exercise with acute anemia in humans
نویسندگان
چکیده
منابع مشابه
Cardiovascular responses to dynamic exercise with acute anemia in humans.
We hypothesized that reducing arterial O2 content ([Formula: see text]) by lowering the hemoglobin concentration ([Hb]) would result in a higher blood flow, as observed with a low [Formula: see text], and maintenance of O2 delivery. Seven young healthy men were studied twice, at rest and during two-legged submaximal and peak dynamic knee extensor exercise in a control condition (mean control [H...
متن کاملCardiovascular responses to treadmill exercise testing in anemia.
OBJECTIVE To study exercise performance on a treadmill in anemic children. DESIGN Prospective case control study. SETTING Department of Pediatrics and Intensive Care Unit, Department of Medicine, King George's Medical College, Lucknow. SUBJECTS The study population consisted of 41 cases of anemia (10 mild, 21 moderate and 10 severe) and 11 normal age and height matched children aged betwe...
متن کاملCardiovascular and splenic responses to exercise in humans.
To investigate splenic erythrocyte volume after exercise and the effect on hematocrit- and hemoglobin-based plasma volume equations, nine men cycled at an intensity of 60% maximal O(2) uptake for 5-, 10-, or 15-min duration, followed by an incremental ride to exhaustion. The reduction in spleen volume, calculated using (99m)Tc-labeled erythrocytes, was not significantly different among the thre...
متن کاملIncreasing blood flow to exercising muscle attenuates systemic cardiovascular responses during dynamic exercise in humans.
Reducing blood flow to working muscles during dynamic exercise causes metabolites to accumulate within the active muscles and evokes systemic pressor responses. Whether a similar cardiovascular response is elicited with normal blood flow to exercising muscles during dynamic exercise remains unknown, however. To address that issue, we tested whether cardiovascular responses are affected by incre...
متن کاملCardiopulmonary physiological responses to heavy exercise in patients with anemia.
The hemodynamic adaptation of the human body to acute and chronic anemia has been extensively studied. There are few reports, however, of investigations of the response of anemic individuals to exercise. The most exhaustive study to date is that of Bishop, Donald and Wade (1), who evaluated 11 patients with anemia at moderate levels of exercise, performed in a supine position at minute ventilat...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: American Journal of Physiology-Heart and Circulatory Physiology
سال: 1997
ISSN: 0363-6135,1522-1539
DOI: 10.1152/ajpheart.1997.273.4.h1787