background and aim: low back pain is a common complaint in communities which has negative effects on different aspects of life. an effective method for reduction of low back pain complications is foot reflexology. foot reflexology has a positive effect in reduction of complications in low back pain. foot reflexology reduces respiratory rate, blood pressure and pulse rate. this study is an inves...

a role of adenosine in pathogenesis of syndrome x has recently been postulated. previous studies suggest that aminophylline (an adenosine receptor blocker) improves exercise tolerance in this disorder. present study was performed to examine the efficacy of theophylline in syndrome x and to determine the incidence of cardiovascular risk factors and clinical, ecg and angiographic findings in thes...

Experimental studies of animals have previously demonstrated the validity of [1-11C]acetate as a tracer of oxidative metabolism for use with positron emission tomography. The present study was undertaken to define in normal human volunteers the relation between myocardial clearance kinetics of [1-11C]acetate, and the rate-pressure product as an index of myocardial oxygen consumption. Twenty-two...

in this study, the slurry polymerization of ethylene over ticl4/mgcl2/alet3 was obtained. firstly, to obtain the optimum value of [al]/[ti], the effect of [al]/[ti] on polymerization rate and catalyst yield was studied. also, the effect of catalyst content on yielding, crystallization, melting point and density of product were obtained. to determine the order of reaction, the monomer pressure w...

BACKGROUND Increasing urbanisation in sub-Saharan African countries is causing a rapid increase in cardiovascular disease. Evidence suggests that Africans have higher blood pressures and a higher prevalence of hypertension-related cardiovascular morbidity and mortality, compared to Caucasians. We investigated double product (systolic blood pressure × heart rate), a substantial measure of cardia...

Background: Movement dysfunction may be expressed in terms of symptoms experienced in non-physiological postures, and head-down crooked kneeling (HDCK) is a posture frequently assumed by Muslims during prayer activities. The purpose of this study was to investigate the cardiovascular responses in the HDCK posture. Methods: Seventy healthy volunteers, comprising 35 males and 35 females, ...

ramadan is a holy month for muslims and fasting in this month is the rule for any healthy matured person. nutritional and behavioral changes occurred during ramadan fasting may lead to several physiological change, such as blood pressure (2). studies evaluated the effects of ramadan fasting on blood pressure in hypertensive patients, are scarce and reported inadequate results. in this paper a s...

OBJECTIVE This study investigated the acute hemodynamic responses to multiple sets of passive stretching exercises performed with and without the Valsalva maneuver. METHODS Fifteen healthy men aged 21 to 29 years with poor flexibility performed stretching protocols comprising 10 sets of maximal passive unilateral hip flexion, sustained for 30 seconds with equal intervals between sets. Protoco...

BACKGROUND Isokinetic dynamometry is becoming increasingly important for the assessment of muscle function in individuals with intermittent claudication. However, there is still little information available about the cardiovascular responses of these patients during this type of assessment. OBJECTIVE To assess and compare the cardiovascular responses recorded during the assessment of muscle s...