This study examined the differences in fat and carbohydrate oxidation during running and cycling at the same relative exercise intensities, with intensity determined in a number of ways. Specifically, exercise intensity was expressed as a percentage of maximum workload (WL(max)), maximum oxygen uptake (%VO(2max)), and maximum heart rate (%HR(max)) and as rating of perceived exertion (RPE). Ten ...

quality of life (qol) is a vast multidimensional concept related to health and health care. as qol decreases after health diseases, the aim of most medical health care systems and cardiac rehabilitation centers are to enhance qol of heart disease patients. the aim of this study was to investigate the effects of continuous and interval exercise training on quality of life of heart patients after...

objectives this study evaluates the effects of oral tizanidine on hemodynamic responses during operations and aims to determine the appropriate propofol dosage to maintain anesthesia under bis monitoring. materials and methods a double-blind clinical trial has been performed on 70 candidates for elective abdominal surgery undergoing general anesthesia in educational hospital of ghaem, mashhad, ...

BACKGROUND increasing age affects aerobic capacity, with an average loss of 10% or more per decade. AIM to determine the effect of ageing on the circulatory system in middle-aged men during 33 years of physical training. METHODS 15 men initially aged 45 years took part in an exercise training programme for 25-33 years. Nine serial measurements were made at rest and during maximal effort. Ae...

The present study investigated the heart rate response to playing tennis with special reference to the skill levels and ages of the participants. Data obtained in a similar manner during earlier studies of badminton and squash players were compared with that obtained during tennis. The number of rallies, mean rally time and actual playing time in 30 minutes of play was also compared for the dif...

BACKGROUND Idiopathic ventricular tachycardia (VT) occurs in a small but important subset of patients without clinically overt heart disease. The mechanism of the arrhythmogenesis remains unclear in these patients. This study examines modulation of the QT interval by the autonomic nervous system in a group of patients with idiopathic ventricular tachycardia. METHODS Cardiac autonomic activity...

Anoxic survival requires the matching of cardiac ATP supply (i.e. maximum glycolytic potential, MGP) and demand (i.e. cardiac power output, PO). We examined the idea that the previously observed in vivo downregulation of cardiac function during exposure to severe hypoxia in tilapia (Oreochromis hybrid) represents a physiological strategy to reduce routine PO to within the heart's MGP. The MGP o...