Anderson Luiz Bezerra Silveira

Federal Rural University of Rio de Janeiro | UFRRJ · Department of Physical Education and Sports

Introduction: Isometric strength training (IST) is an important component of different types of sport and others activities of daily life. However, until the present moment, no studies have linked the isometric strength training with acetylcholinesterase (AChE) activity changes. Objective: We evaluated the effects of IST on the muscular AChE activi...

A modalidade sprint do esporte orientação é um evento de média duração (12-15min) com picos de intensidade e consequentemente variações da demanda metabólica. A habilidade em recrutar de maneira específica a ação muscular sem redução no desempenho é determinante do resultado final do atleta. A metodologia do treinamento empregada nessa modalidade d...

The present research aimed to compare the HRV of people living with HIV (PLWH) with non-infected individuals in aquatic and dryland environments. Twenty participants were divided into two groups. PLWH composed the experimental group (EG), and seronegative participants composed the control group (CG). In dryland, HRV was measured in time and frequen...

The purpose of this study was to characterize the role of β1-AR signaling and its cross-talk between cardiac renin–angiotensin system and thyroid-hormone-induced cardiac hypertrophy. T3 was administered at 0.5 mg·kg⁻¹·day⁻¹ for 10 days in β1-KOT3 and WTT3 groups, while control groups received vehicle alone. Echocardiography and myocardial histology...

Individuals with lower-limb amputations may have a significant strength deficit. This deficit may be related to the stump length and can lead to changes in gait, reduced energy efficiency , walking resistance, altered joint load, and increased risk of osteoarthritis and chronic low back pain. This systematic review used the Preferred Reporting Item...

Objective The purpose of this study was to investigate the association between the frequency of leisure-time physical activity and brachial pulse pressure (PP), according to physical activity intensity and type, sex, and age, in the general Brazilian population. Study design This was a cross-sectional study based on data from the Brazilian 2013 Na...

Introduction: Systemic arterial hypertension has been growing worldwide, causing thousands of deaths and large expenses in this condition treatment. Currently, resistance training (RT) is widely prescribed as a non-pharmacological option for blood pressure control, but there are some individuals with intolerance to high load of RT. Hence, blood flo...

PurposeTo investigate the association between frequency of physical activity (PA) and blood pressure values in the Brazilian population.MethodsA cross-sectional study of 25,920 males and 34,282 females was analyzed. Multiple linear regression was applied to test the association of different frequencies of PA and systolic and diastolic blood pressur...

Abstract: Introduction: It is common for postmenopausal women to receive a vitamin D supplementation prescription to assist in preventing future falls and to maintain bone health. However, the association between vitamin D supplementation and physical fitness components has not been studied in older women with diabetes. Objective: We examined the i...

Objectiveː The aim was to evaluate the effects of four weeks of resistance training and sexual dimorphism on Manual reaction time in apparently healthy subjects. Methods: The subjects of the sample were randomly allocated in two groups, as follow: Control (CTRL) - kept 4 weeks without any systematized physical activity (Nmales= 8, age= 24±3 yrs., b...

Background and aims Precise evaluation of resting metabolic rate (RMR) is critical, especially for seniors in syndromes conditions. The study aimed to compare different methods and devices to evaluate the resting metabolic rate and assess them’ reliability in Brazilian women with metabolic syndrome. Methods A single-center prospective study with f...

Introduction: After the spread of new coronavirus (COVID-19) around the world, some sanitary measures were adopted to reduce the transmission rate. Social distancing and the use of masks are one of them. Therefore, after months of pandemic situation, levels of infection and mortality began to decline in some regions of Brazil. As a result, some sta...

Introdução: O alongamento muscular é uma prática popularmente realizada com o propósito de melhorar a qualidade de vida e o desempenho em atividades físicas. Alguns estudos científicos relatam efeitos deletérios desta prática relacionadas às respostas mecânicas e neurais para a realização do movimento, os quais poderiam ser diretamente interferente...

Background: Immersion has been used for many years for therapeutic purposes, but more recently the cardiovascular and authonomic effects appear as an important change in the organism during immersion in the aquatic environment.Objectives: The aim of this study was to investigate the acute effect of water immersion (22.6 °C) on heart rate, heart rat...

Background: Immersion has been used for many years for therapeutic purposes, but more recently the cardiovascular and authonomic effects appear as an important change in the organism during immersion in the aquatic environment.Objectives: The aim of this study was to investigate the acute effect of water immersion (22.6 °C) on heart rate, heart rat...

Muscular strength is considered one of the principal physical aptitude and healthy components [1] and its evaluation through manual grip, besides being relatively simple, does not involve considerable financial expenditures and possesses good predictive capacity. Therefore, it can have great value for triage in programs and researches considering p...

Commentaries on Viewpoint: Resistance training and exercise tolerance during high-intensity exercise: moving beyond just running economy and muscle strength

Aim Thyroid dysfunctions can increase the risk of myocardial ischemia and infarction. However, the repercussions on cardiac ischemia/reperfusion (IR) injury remain unclear so far. We report here the effects of hypothyroidism and thyrotoxicosis in the susceptibility to IR injury in isolated rat hearts compared to euthyroid condition and the potentia...

Warm-up is broadly used to increase performance and protect against injury in sports. However, the effects of different models of warm-up on maximal exercise and the subsequent recovery period are undetermined. This study aimed to assess the effects of different warm-ups on performance, blood pressure and autonomic control. Methods: 53 subjects res...

OBJECTIVE: This study aimed to evaluate the influence of acute muscle stretching on manual function. METHODS: The sample consisted of 10 untrained men in a randomized, four test session cross-over experimental design. Each session was composed of only one of two protocols: a) control, or b) single series of passive static stretching; followed by e...

The association between caffeine consumption and various psychiatric manifestations has long been observed. The objective was to assess the behavioral profile in offspring of Swiss mice treated during pregnancy and lactation with caffeine. For this purpose, two groups (n = 6 each and BW ~ 35 g) of female mice were treated during pregnancy and lacta...

ABSTRACT: The present study verified the acute effect of proprioceptive neuromuscular facilitation stretching method on systolic blood pressure (SBP), diastolic blood pressure (DBP), rate pressure product (RPP) and oxygen saturation (SpO2) in women athletes from swimming and synchronized swimming. The subjects (N=12) were randomly allocated in one...

Silveira ALB, Rocha AL, Costa CRM, Magalhães KS, Laureano-Melo R, de Paula WV, Ribeiro WMV, Costa e Silva G. Acute Effects of an Active Static Stretching Class on Arterial Stiffness and Blood Pressure in Young Men. JEPonline. 2016;19(4):1-11. The purpose of this study was to investigate the effects of a low intensity active static stretching class...

This study evaluated the heart rate (HR) responses before, during and after the run exercise at mini trampoline, in water or land environment, at the same cadence (CAD) and range of motion. Eight women (25 ± 8 yr; 55.1 ± 4.6 kg; 166 ± 3.3 cm; 21.7 ± 4.3 % body fat) randomly separated in 2 groups, and that have performed the exercise protocol in wat...

OBJECTIVE: To investigate the acute effect of static stretching on heart rate variability in trained men. METHODS: Eight subjects were randomly submitted to two situations, as follows: a static stretch protocol and 20 minutes at rest. The stretch protocol consisted of two sets of 30 seconds of static stretch of the chest muscles with a 40 second o...

Aims: Premenopausal women are known to show lower incidence of cardiovascular disease than men. During myocardial infarction (MI), homeostatic responses are activated, including the sympathetic autonomic nervous system and the renin-angiotensin-aldosterone system, which is related to the fluid and electrolyte balance, both aiming to maintain cardi...

This study compared the effects of order of muscle groups' exercised (larger to smaller muscles vs. smaller to larger muscles) on the acute levels of total testosterone, free testosterone and cortisol during resistance training (RT) sessions. Healthy male participants (n=8; age: 28.8 ± 6.4 years; body mass: 87.0 ± 10.6 kg; body height: 181.0 ± 0.7...

Recent reviews have shown detrimental effects of muscle stretching before sports activity. In addition, controversial results have been presented on the benefits of warming up. This purpose of this study was to evaluate the influence of a pre-exercise warm-up and ballistic stretching on performance and heart rate variability during an incremental c...

Recent reviews have shown detrimental effects of muscle stretching before sports activity. In addition, controversial results have been presented on the benefits of warming up. This purpose of this study was to evaluate the influence of a pre-exercise warm-up and ballistic stretching on performance and heart rate variability during an incremental c...

This study investigated the acute effect of static stretching methods (SS) and proprioceptive neuromuscular facilitation (PNF) on the static muscle strength (SMS). Eleven young male subjects with strength training experience, performed 3 tests with a 48h interval between them, randomly selected, where each one subject carried out all procedures: a)...

New Findings What is the central question of this study? Based on the relevance of the renin–angiotensin system and the controversy regarding the role of the sympathetic nervous system in thyroid hormone‐related cardiac hypertrophy, the present study sought to establish whether there is a gender difference in activation of these systems and the deg...

AIM: This study verified the acute effect of static stretching (SS) and proprioceptive neuromuscular facilitation (PNF) stretching on front crawl swimming performance. METHODS: Thirteen young males (22.7±1.42 years; 77.2±7.25 kg; 172.5±1.33 cm; BMI, 25.9±4.09) were submitted to three randomly select experimental protocols as follows: a) 50 m front...

Few data are available on adolescent users because most behavioral studies on anabolic-androgenic steroids (AAS) abuse have been performed in adults. Studies evaluating the impact of long-term effects of AAS abuse on the prepubertal phase are even more uncommon. Accordingly, this study was developed to test the hypothesis that changes induced by th...

The objective was to assess the behavioral profile in offspring of Swiss mice treated during pregnancy and lactation with caffeine. For this purpose, two groups (n=6 each, and BW~35g) of female mice were treated during pregnancy and lactation by: tap water and caffeine solution at a concentration of 0,3mg/mL through oral route. The offsprings obtai...

Objective: Verify the acute effect of static muscle stretching on isometric muscle strength. Methods: A total of 25 healthy young subjects with strength training experience randomly participated in the study. A group performed two handgrip tests preceded by static stretching with range of motion to discomfort point, during 30 seconds. The other gro...

Objective: Verify the acute effect of static muscle stretching on isometric muscle strength. Methods: A total of 25 healthy young subjects with strength training experience randomly participated in the study. A group performed two handgrip tests preceded by static stretching with range of motion to discomfort point, during 30 seconds. The other gro...

Serotonin (5‐HT) plays an important role in the central nervous system embryogenesis of mammals. Indeed, the serotonergic neurons are the earliest to be generated and can modulate neuronal plasticity. Some studies showed that brain 5‐HT depletion in the neonatal period leads to a plastic cytoarchitectonic change of the serotonergic system, which in...

Resumo: O alongamento é comumente utilizado como preparação para a atividade física. Estudos científicos recentes questionam a sua aplicação, visto que o alongamento demonstra vários detrimentos ao desempenho. Este estudo objetivou verificar se o alongamento balístico alcança as mesmas alterações sobre desempenho e variabilidade da frequência cardí...