introduction: to study the effects of exercise, how important it is to choose a posture? we aimed to characterize the possible impact of different body positions on cardiovascular parameters during and after sustained isometric handgrip (ihg) exercise. materials and methods: cross sectional study was carried out in 33 young adult males (mean age: 19.21±1.083 years). we recorded blood pressure (...

thiopental sodium is an ultra short-acting barbiturate. due to its redistribution characteristic, its first injection has a short term effect. in order to elongate its anesthesia duration, more injections are needed. as these additional injections extend the recovery length , weaken respiration and causes other dangerous effects; its repeated use is considered unsafe. citicoline is a natural su...

Patients with sick sinus syndrome have abnormalities of the sinoatrial node. We have measured the heart rate response to exercise in 7 patients with sick sinus syndrome without significant associated heart disease (group A) mean age 53.4 years, and compared this with 7 'normal' patients who were age-matched to within 5 years (group B), and 7 younger, well-trained subjects (group C). All underwe...

OBJECTIVES This study sought to investigate the effects of interventional renal sympathetic denervation (RD) on cardiorespiratory response to exercise. BACKGROUND RD reduces blood pressure at rest in patients with resistant hypertension. METHODS We enrolled 46 patients with therapy-resistant hypertension as extended investigation of the Symplicity HTN-2 (Renal Denervation With Uncontrolled ...

This study aimed to verify habitual smoking effects on cardiopulmonary function in taekwondo athletes. Subjects were university taekwondo athletes aged 20-24 years in nonsmoker (n= 9) and smoker (n= 6) groups. Subjects underwent an exercise examination for their ventilation threshold, minute ventilation, oxygen uptake, maximum volume of minute oxygen consumption, heart rate, and oxygen pulse du...

In a previous article (Knox, 1940) an accurate method of recording the changes in heart rate during exercise was described, and results were given for normal subjects performing a brief light step-test. This technique has now been applied to patients with auricular fibrillation. The present series consists of twenty-two tracings from thirteen ambulant patients with fibrillation. The standard ex...

BACKGROUND More than 500,000 men play "gentlemen's" recreational hockey in Canada, but the safety of this exercise has not been studied. Exercising at extremes of intensity has been associated with an increased risk of cardiac events. Our objective was therefore to determine baseline cardiac risk factors among adult recreational hockey players and to measure any cardiac abnormalities they exper...