objectives the aim of this study was to investigate the relation between respiratory muscle strength and the severity of chf, and the influence of respiratory muscle strength on abnormal ventilation during exercise in chf patients. conclusions respiratory muscle strength is related to the severity of chf, and associated with rapid and shallow ventilation or excessive ventilation during exercise...

same test, after each individual rested 30 min and took 0.4 mg nitroglycerin sublingually, increased V02 max in patients with angina (by 14.5%, P <0.001) and in patients with prior infarction (by 6%, P < 0.005) but not in healthy persons. Angina at VO2 max was prevented in 12 patients. Maximal heart rate was increased by 11% in the angina group and by 4% in the myocardial infarction group; the ...

PURPOSE To examine changes in hamstring muscle fatigue and central motor output during a 90-minute simulated soccer match, and the concomitant changes in hamstring maximal torque and rate of torque development. METHOD Eight amateur male soccer players performed a 90-minute simulated soccer match, with measures performed at the start of and every 15-minutes during each half. Maximal torque (Nm...

background: it has been suggested that the autonomic system function and the metabolic syndrome can significantly affect patients' survival. the aim of the current study was to investigate the impact of the cardiac rehabilitation program on the autonomic system balance in patients with coronary artery disease. methods: patients with a previous diagnosis of coronary artery disease who were refer...

conclusion a higher magnetic field strength and a decrease in the hr resulted in an increase in body temperature during the mri procedure. results our investigation of the physiological response to rf heating indicated a link between increasing age and body temperature. a higher increase in body temperature was observed in older patients after a 3.0-t mri (r = 0.07, p = 0.29 for 1.5-t mri; r = ...

OBJECTIVES To observe the relationship between chest pain/dyspnoea-heart rate during exertion in patients with angiographically proved Coronary artery disease compared to patients having negative Exercise Tolerance Test in a private and public sector hospital. METHODS This is an observational two centre study from Karachi in which 150 patients referred for Exercise ToleranceTest (ETT) at Ziau...

BACKGROUND Higher heart rate is associated with mortality, whereas its association with clinical cardiovascular events is much more challenged. METHODS A prospective study was conducted for 169,871 Chinese adults ≥40 years in 1991 and followed during 1999-2000 with a response rate of 93.4%. Hazard ratios (HRs) were estimated by Cox proportional hazard regression model. Cardiovascular disease ...

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