Heart rate agreement between the 20-meter shuttle run test and virtual system in healthy children: a cross-sectional study.

Background: Earlier studies evaluated the physiological responses to video games in children with different clinical conditions; however, no study has compared active video games with an incremental field test in healthy children. The purpose of this study was to verify the agreement between the 20-m shuttle run test (20 m-SRT) and virtual system (VS).

Methods: This is a cross-sectional study of 235 children (9.

Performance and reproducibility on shuttle run test between obese and non-obese children: a cross-sectional study.

Background: Due to the increasing prevalence of obesity among children, Shuttle Run Test (SRT) has been used as primary outcome for assessment of both physical performance and responses to different physical training programs. Thus, this study aimed to compare the performance on SRT between obese and non-obese children and the reproducibility of two SRTs carried out on different days.

Methods: A cross-sectional study in which 40 children, aged from 8 to 10, were recruited from a public school.

Electrocardiogram Performance in the Diagnosis of Left Ventricular Hypertrophy in Hypertensive Patients With Left Bundle Branch Block.

Background: Left ventricular hypertrophy (LVH) is an important risk factor for cardiovascular events, and its detection usually begins with an electrocardiogram (ECG).

Objective: To evaluate the impact of complete left bundle branch block (CLBBB) in hypertensive patients in the diagnostic performance of LVH by ECG.

Methods: A total of 2,240 hypertensive patients were studied.

Is there a need to redo many of the diagnoses of hypertension?

Context And Objective: Most hypertensive subjects undergoing treatment were diagnosed solely through measurements made in the consultation office. The objective of this study was to redo the diagnosis of treated patients after new clinical measurements and ambulatory blood pressure monitoring (ABPM).

Design And Setting: Cross-sectional study conducted in an outpatient specialty clinic.

Electrocardiogram sensitivity in left ventricular hypertrophy according to gender and cardiac mass.

Background: Several factors are known to interfere with electrocardiogram (ECG) sensitivity when diagnosing Left Ventricular Hypertrophy (LVH), with gender and cardiac mass being two of the most important ones

Objective: To evaluate the influence of gender on the sensitivity of some of the criteria used to detect LVH, according to the progression of ventricular hypertrophy degree.

Methods: According to gender and the degree of LVH at the echocardiogram, the patients were divided in three groups: mild, moderate and severe LVH. ECG sensitivity to detect LVH was assessed between men and women, according to the LVH degree.

[Assessment of resistant hypertension with home blood pressure monitoring].

Background: ambulatory blood pressure monitoring (ABPM) is considered the gold standard for the diagnostic confirmation of resistant hypertension (RH). However, home blood pressure monitoring (HBPM) has been considered an option, because of its lower cost and greater comfort.

Objective: to compare the values obtained by HBPM with those obtained by ABPM in the identification of patients with resistant hypertension.

[Duchenne muscular dystrophy: electrocardiographic analysis of 131 patients].

Background: Cardiac involvement is known to occur in patients with Duchenne muscular dystrophy (DMD). The electrocardiogram (ECG) shows some typical changes in DMD, which makes it a useful test for the diagnosis of cardiac lesion in this disease.

Objective: To evaluate the electrocardiographic changes in patients with DMD and to correlate these changes with the age of the population studied.

Electrocardiography in the diagnosis of ventricular hypertrophy in patients with chronic renal disease.

Background: Left ventricular hypertrophy (LVH) is an independent predictor of cardiovascular risk, and its characterization and prevalence in chronic renal disease (CRD) should be further studied.

Objective: To establish the diagnosis of LVH in patients with stage-5 CRD using six different electrocardiographic criteria, and to correlate them with left ventricular mass index (LVMI) as obtained by echocardiography.

Methods: Cross-sectional study including 100 patients (58 men and 42 women, mean age 46.

Relationship between electrocardiogram with diabetes mellitus and metabolic syndrome in Japanese-Brazilians.

Background: When the Japanese immigrated to the Americas, they were subjected to Westernization, with a great change in lifestyle, specially in dietary habits, and this may explain the increase in the incidence of diabetes mellitus (DM), metabolic syndrome (MS) and cardiovascular disease among them.

Objective: To study the presence of myocardial necrosis and left ventricular hypertrophy (LVH) in a population of Japanese-Brazilians, using the ECG and its relationship with DM and MS.

Methods: This was a cross-sectional study which evaluated 1,042 Japanese-Brazilians aged 30 or over, 202 of them born in Japan (Issei) and 840 of them born in Brazil (Nissei), from the second phase of the Japanese-Brazilian Diabetes Study Group initiated in 2000.

High circulating autoantibodies against human oxidized low-density lipoprotein are related to stable and lower titers to unstable clinical situation.

Background: Oxidized lipoproteins and antibodies anti-oxidized low-density lipoprotein (anti-oxLDL) have been detected in human plasma and in atherosclerotic lesions. However, the role of these autoantibodies in the maintenance of vascular health or in the pathogenesis of acute vascular insults remains unclear. We examined the relationship of human immunoglobulin G (IgG) anti-oxLDL antibodies with cardiovascular disease risk markers in stable subjects and in patients after an acute coronary syndrome (ACS).

Slow breathing test increases the suspicion of white-coat hypertension in the office.

Background: It would be useful to have a clinical test that increases the suspicion of white coat hypertension (WCH) during the medical consultation.

Objective: To evaluate the Slow Breathing Test (SBT) when differentiating hypertension from WCH.

Methods: 101 hypertensive patients selected at triage had their medication withdrawn for 2-3 weeks.

Correlation of electrocardiographic left ventricular hypertrophy criteria with left ventricular mass by echocardiogram in obese hypertensive patients.

Introduction: Left ventricular hypertrophy (LVH) and obesity are important cardiovascular risk factors. This study evaluates the influence of obesity on the diagnostic performance of the most used electrocardiographic criteria for LVH in hypertensive patients.

Methods: One thousand two hundred four outpatients from the Hypertensive Unit of the Hospital São Paulo, São Paulo, SP, Brazil, were studied.

Ventricular mass and electrocardiographic criteria of hypertrophy: evaluation of new score.

Background: The left ventricular hypertrophy (LVH) is an important and independent cardiovascular risk factor. There is a scarcity of studies in Brazil designed to test the efficacy of the electrocardiogram (ECG) in the diagnosis of this important pathological process.

Objective: To evaluate a new electrocardiographic score for the diagnosis of LVH by ECG: the sum of the highest amplitude of the S wave and the highest amplitude of the R wave on the horizontal plane, multiplied by the result of the QRS duration [(S+R) X QRS)] and comparing it with the classic electrocardiographic criteria.

Exercise training prevents beta-adrenergic hyperactivity-induced myocardial hypertrophy and lesions.

Background: Sustained beta-adrenoreceptor activation promotes cardiac hypertrophy and cellular injury.

Aims: To evaluate the cardioprotective effect of exercise on damage induced by beta-adrenergic hyperactivity.

Methods: Male Wistar rats were randomised into four groups (n=8 per group): sedentary non-treated control (C), sedentary treated with isoproterenol 0.

Quality of life of hypertensive patients treated at an outpatient clinic.

Background: The main cause of mortality in braziliam population is the cardiovascular disease and arterial hypertension (AH) the most prevalent one. The antihypertensive treatment is effective however it is not well known how affects the quality of life (QOL) in patients afterwards.

Objective: To comparatively assess the QOL in patients submitted to an antihypertensive treatment.

Electrocardiographic changes by accidental hypothermia in an urban and a tropical region.

Background: Hypothermia is defined as a condition in which core temperature (rectal, esophageal, or tympanic) reaches values below 35 degrees C. This may be accidental, metabolic, or therapeutic. The accidental form is frequent in cold-climate countries and rare in those with tropical or subtropical climate.

Pravastatin protection from cold stress in myocardium of rats.

The aim of this research was to evaluate the possible protective effect of pravastatin on ultrastructural alterations induced by cold stress in the myocardium of rats. Sixteen EPM-Wistar rats (Rattus norvegicus albinus) were used and distributed into four groups: 1) control; 2) pravastatin; 3) cold stress, and 4) pravastatin + cold stress. A daily oral dose of 10 mg/kg of weight of pravastatin was administered to each rat in groups 2 and 4 for 15 days.