Ergometry
Mostrando 25-36 de 38 artigos, teses e dissertações.
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25. Comparison of physical work capacity and systolic time intervals with ventricular inhibited and atrial synchronous ventricular inhibited pacing.
Sixteen patients with a non-invasively programmable pacemaker (Medtronic 2409) were examined with the unit in ventricular inhibited (VVI) and atrial synchronous ventricular inhibited (VDT/I) mode, respectively. Maximal exercise capacity was determined by means of bicycle ergometry. Work load was increased in steps of 10 watts each minute. Atrial and ventricu
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26. Controlled-analysis of the effects of inhaled lignocaine in exercise-induced asthma.
To determine whether anaesthesia of the intrathoracic airways would attenuate the development of exercise-induced asthma, we studied eight symptomless asthmatic patients by cycle ergometry after saline or lignocaine pretreatment while they were breathing air at 24 degrees C with 9.1 mg of H2O/l. Pulmonary mechanics were measured before and after the administ
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27. Health, fitness, physical activity, and morbidity of middle aged male factory workers. I.
A description of the fitness, physical activity of lifestyle, and some aspects of health status and attitudes in a population of male factory workers aged 35-60 is presented as the first part of a report on a study of morbidity in this population. A total of 1394 subjects were included, undergoing medical examination, fitness testing by bicycle ergometry, as
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28. Changes in the electrocardiographic response to exercise in healthy women.
Changes in the P wave, QRS complex, ST segment, and T wave during and after maximal exercise were quantitatively analysed in 116 healthy women with a mean age of 39. The corrected orthogonal Frank lead electrocardiogram was continuously recorded and computer processed during bicycle ergometry. With exercise, maximal spatial P wave vectors shifted downward. T
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29. Natriuretic peptides and cyclic guanosine 3',5'-monophosphate in asymptomatic and symptomatic left ventricular dysfunction.
BACKGROUND: Screening for patients with asymptomatic left ventricular dysfunction is of considerable importance because they may benefit from early treatment with angiotensin converting enzyme inhibitors. It has been suggested that atrial natriuretic peptide (ANP), brain natriuretic peptide (BNP), and cyclic guanosine 3',5'-monophosphate (cGMP) might be usef
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30. Role of the carotid bodies in the respiratory compensation for the metabolic acidosis of exercise in humans.
1. In response to an acute exercise-induced metabolic acidosis, the fall of arterial pH is constrained by the magnitude of the compensatory hyperventilation. To determine the role of the carotid bodies in this regulatory process, subjects performed prolonged (24 min) square-wave cycle ergometry from a background of unloaded cycling at inspired oxygen fractio
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31. A brief bout of exercise alters gene expression and distinct gene pathways in peripheral blood mononuclear cells of early- and late-pubertal females
Recent studies show that brief exercise alters circulating neutrophil and peripheral blood mononuclear cell (PBMC) gene expression, ranging from cell growth to both pro-and anti-inflammatory processes. These initial observations were made solely in males, but whether PBMC gene expression is altered by exercise in females is not known. Ten early-pubertal girl
American Physiological Society.
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32. The Tromsø study: physical fitness, self reported physical activity, and their relationship to other coronary risk factors.
STUDY OBJECTIVE--The aim was to investigate the associations between physical fitness, leisure physical activity, and coronary risk factors. DESIGN--This was a cross sectional study of a random sample of men and women, following a population survey. SETTING--The municipality of Tromsø, Norway in 1986-1987. PARTICIPANTS--All men born 1925-1966 and all women
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33. Use of a combined oxygen and carbon dioxide transcutaneous electrode in the estimation of gas exchange during exercise.
BACKGROUND--Accurate and reliable measurement of gas exchange during exercise has traditionally involved arterial cannulation. Non-invasive devices to estimate arterial oxygen (O2) and carbon dioxide (CO2) tensions are now available. A method has been devised and evaluated for measuring gas exchange during exercise with a combined transcutaneous O2 and CO2 e
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34. Effect of pimobendan on exercise capacity in patients with heart failure: main results from the Pimobendan in Congestive Heart Failure (PICO) trial.
PRIMARY OBJECTIVE: To determine the effects of pimobendan 2.5 and 5 mg daily on exercise capacity in patients with chronic heart failure. DESIGN: A randomised, double blind, placebo controlled trial of the addition of pimobendan to conventional treatment with a minimum follow up of 24 weeks. SETTING: Outpatient cardiology clinics in six European countries. P
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35. Influence of inspired oxygen concentration on the dynamics of the exercise hyperpnoea in man.
In order to determine the role of the carotid bodies on the ventilatory control characteristics during the non-steady-state phase of exercise in man, six normal males performed cycle ergometry with four repetitions of a 6 min, constant-load work bout at inspired O2 fractions (FI,O2) of 0.12, 0.15, 0.21, 0.30 and 1.00. Each test began with unloaded pedalling;
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36. Heart rate variability and circulating catecholamine concentrations during steady state exercise in healthy volunteers.
OBJECTIVES--To assess whether exercise induced suppression of heart rate variability in the low frequency domain (0.06-0.15 Hz) is related to the increase in circulating catecholamine concentrations. DESIGN--Randomised crossover trial of three exercise tests characterised by different workloads. Pharmacological simulation of exercise-induced changes in vagal