Jeferson Macedo Vianna

Universidade Federal de Juiz de Fora · Departamento de Desportos (DEP)

Background: Arterial occlusion pressure (AOP) is a relevant measurement for individualized prescription of exercise with blood flow restriction (BFRE). Therefore, it is important to consider factors that may influence this measure. Purpose: This study aimed to compare lower limb AOP (LL-AOP) measured with 11 cm (medium) and 18 cm (large) cuffs, in...

Street running is one of the most practiced sports in the world, and a complex interaction between physiological, methodological, mechanical, environmental, and psychological parameters influences its performance. Therefore, this systematic review aimed to evaluate the impact of strength training on long-distance runners on running time. 803 articl...

This study aimed to investigate the validity of several equations and predictive indices for estimating body fat percentage (%BF) in 152 older women, with an average age of 67.4 years and an average body mass index (BMI) of 28.65 kg/m². To this end, anthropometric measurements including height, body weight, circumferences (waist and hip), and a dua...

Introdução: A sarcopenia é a perda de massa muscular associada ao envelhecimento. Intervenções nutricionais e exercícios físicos são algumas das estratégias utilizadas para mitigar os efeitos deletérios da sarcopenia. Esta revisão abrangente teve como objetivo analisar os efeitos de diferentes intervenções nutricionais baseadas no uso de suplemento...

The present study aimed to compare the effect of 24 sessions of stretching exercises performed before resistance exercises versus resistance exercise sessions on the hemodynamic responses of sedentary individuals. Thirty volunteers (26.76±6.29 years old, 81.56±10.66 kg body weight, 1.74±0.07 m height, and 26.74 ±.82 kg/m2 body mass index) participa...

A detecção de talentos é um processo dinâmico onde o conhecimento científico e o conhecimento dos treinadores devem interagir. O objetivo do estudo foi criar um modelo matemático de avaliação do potencial esportivo para o judô e testar as suas propriedades psicométricas. Participaram 3426 escolares de ambos os sexos de 11 a 17 anos de um colégio mi...

The present study aimed to compare the effect of 24 sessions of stretching exercises performed before resistance exercises versus resistance exercise sessions on the hemodynamic responses of sedentary individuals. Thirty volunteers (26.76±6.29 years old, 81.56±10.66 kg body weight, 1.74±0.07 m height, and 26.74 ±.82 kg/m2 body mass index) participa...

Background Complex contrast training (CCT) is potentially an efficient method to improve physical abilities such as muscle strength, power output, speed, agility, are extremely important in developing soccer players of different age categories. Aim This study aimed to analyze the effects of 6 weeks of CCT program applied in different training freq...

Introdução: A sarcopenia é uma síndrome geriátrica que precisa ser detectada precocemente. Objetivo: Estimar a prevalência de sarcopenia (SARC) em idosos fisicamente ativos e inativos, por meio de dois métodos distintos: o SARC-CalF – que utiliza a circunferência de panturrilha e o SARC-F. Métodos: Estudo observacional, transversal, com amostra por...

The present study proposed to compare the acute effect of stretching (SE) before resistance exercise (RE) sessions using different intervals (30 vs. 60 vs. 120 seconds) on maximal repetition performance of recreationally trained adults. Twenty men (age: 29.5 ± 7.05 years; height: 82.92 ± 8.47 kg; weight: 1.78 ± 0.07 cm; body mass index: 26.03 ± 1.5...

Background The importance of leptin in controlling body mass has recently gained more attention. Its levels are directly associated with the amount of fat mass, but not necessarily dependent on it. Exercise has great potential in reducing leptin levels, however the response of exercise to this cytokine is still not well understood. Objective The o...

Regular exercise can modulate the immune system functioning through changes in the number and function of leukocytes as well as in red blood cells and other typical blood markers. High intensity exercise promotes increases in cytotoxic activity, phagocytic capacity, chemotaxis and cell apoptosis. The aim of the study was to compare the chronic effe...

Autonomic responses and internal load analysis through acute assessment of heart rate variability after a high-intensity functional training session 155 Arch Med Deporte 2023;40(3):155-161 Artículo original Resumen Introducción: La medición de la variabilidad de la frecuencia cardiaca (HRV) es una herramienta importante que puede ayudar a indicar p...

Objective Verify the influence of different break times between sprints on the performance of amateur futsal athletes. Methods 10 individuals, men, amateur futsal athletes (Age: 21.5 ± 1.6; Weight: 72.4 ± 6.88; Height: 1.72 ± 0.05; BMI: 24.3 ± 1.2; Fat%: 13.7 ± 3.3, VO2peak: 49.1 ± 10.5) participated in the study. Individuals were randomly selecte...

This already published. https://rimcafd.com/article-view?id=1001

Interval training (IT) is a very efficient method. We aimed to verify the chronic effects of IT with different intensities on hemodynamic, autonomic and cardiorespiratory variables in the elderly. Twenty-four physically active elderly men participated in the study and were randomized into three groups: Training Group A (TG A , n = 8), Training Grou...

Foam rolling (FR) has recently become very popular among athletes and recreational exercisers and is often used during warm up prior to strength training (ST) to induce self-myofascial release. The purpose was to examine the acute effects of ST and FR performed in isolation or in combination on blood pressure (BP) responses during recovery in normo...

Our purpose in this study was to analyze perceptual and cardiovascular responses in low-load resistance training (RT) sessions associated with a fixed non-elastic band compressed to the proximal region of the arms (p-BFR) versus a pneumatic cuff inflated to a pressure of 150 mmHg (t-BFR). Participants (16 healthy trained men) were randomly assigned...

This paper investigated the effects over time of different forms of neuromuscular training on hemodynamic responses, the estimated VO2max, and walking performance. 105 older adults were randomly organized into three groups: RGA, RGB, and the Control Group (CG). RGA and RGB did 4 weeks of adaptation phase training and 12 weeks of intervention with d...

The aim of the present study was to verify the acute effect of remote and local IPC application before isometric strength, lumbar and lower limbs manual grip, and upper limbs and trunk muscle endurance tests in recreationally trained individuals. The volunteers were 22 men (age: 26.2 ± 6.9 years, weight: 83.4 ± 11.6 kg, height: 175.4 ± 5.8 cm, BMI:...

R e v i s t a B r a s i l e i r a d e N u t r i ç ã o E s p o r t i v a S ã o P a u l o , v. 1 6. n. 1 0 0. p. 4 13-4 2 3. S e t. / Out. 202 2. I S S N 1 9 8 1-9927 V e r s ã o E l e t r ô n i c a w w w. r b ne. c o m. b r RESUMO Introdução: A palavra endurance tem origem inglesa e significa capacidade de suportar o sofrimento por longo período sem...

Context Several studies have compared perceptual responses between resistance exercise with blood flow restriction and traditional resistance exercise (non-BFR). However, the results were contradictory. Objectives To analyze the effect of RE+BFR versus non-BFR resistance exercise [low-load resistance exercise (LL-RE) or high-load resistance exerci...

CrossFit® is a training program characterized by high intensity stimulus with constantly varied and multifunctional movements that induces a significant range of physiological, hemodynamic and biochemical responses. Heart rate variability (HRV) can be used to measure how individuals react to physiological stress and fatigue. Thus, the aim of this s...

The purpose of this study was to compare the effects of myofascial release and muscle energy on acute outcomes in trunk extensors active range-of-motion and strength in recreationally resistance-trained women. Seventeen apparently healthy women performed three experimental protocols using a cross-over, randomized (counterbalanced in Latin Square fo...

The knowledge of coaches is fundamental in the identification and development of sporting talents. The aim of the study was to investigate how Brazilian judo coaches identify talents and what is the importance of different factors for the development of young judokas. 56 coaches (87% male; 41.6 ± 12.5 years old; 64% Southeast region; 68% national/i...

Background: Sprint interventions can be an excellent alternative for promoting positive adaptations to health and performance. Objective : To verify the responses of different intervals between sprints in blood pressure, heart rate variability, lactate, and performance responses in physically active men. Methods: Ten male runners participated in...

Background: The application of ischemic preconditioning (IPC) to resistance exercise has attracted some attention, owing to increases in muscle performance. However, there is still no consensus on the optimal occlusion pressure for this procedure. This study compared the acute effects of IPC with high and low pressure of occlusion on upper and low...

Background: Aging decreases some capacities in older adults, sarcopenia being one of the common processes that occur and that interfered with strength capacity. The present study aimed to verify the acute effect of IPC on isometric handgrip strength and functional capacity in active elderly women. Methods: In a single-blind, placebo-controlled d...

Background Proper design of resistance training (RT) variables is a key factor to reach the maximum potential of neuromuscular adaptations. Among those variables, the use of RT performed to failure (RTF) may lead to a different magnitude of acute fatigue compared with RT not performed to failure (RTNF). The fatigue response could interfere with acu...

Resumo: O objetivo deste estudo foi examinar os efeitos da distribuição da carga interna de treinamento no desempenho de salto vertical durante a pré-temporada em jogadores de voleibol. A amostra foi composta por 11 jogadores de voleibol da Superliga Masculina de Voleibol (26,4±5,7 anos; 96,6±9,0 kg; 197,6±7,8 cm; 8,1±2,8% de gordura). A pré-tempor...

Introduction Monitoring of CrossFit® training load should be considered to facilitate training outcomes and avoid overtraining. Objective The purpose of the present study was to examine the heart rate (HR), rating of perceived exertion (RPE), and internal load responses to each segment of a CrossFit® training session. Methods An observational, cr...

Resistance training (RT) increases muscle strength, power, and functional capacity (FC) of older women. However, these benefits can be lost partially or totally with detraining. This study aimed to compare the effect of 20 weeks of different types of RT and 4 weeks of detraining on muscle strength, power, and FC in older women. Ninetyfive older wom...

Cunha JCO, Monteiro ER, Fiuza A, Serra R, Vianna JM, Novaes JS. Acute effect of foam rolling before dynamic stretching on the active hip flexion range-of-motion in healthy subjects JEPonline 2021;24(4):1-10. The aim of the present study was to compare the acute effect of the foam roller (FR) (before dynamic stretching) with dynamic stretching (DS)...

The aim of this study was to investigate the acute effect of ischemic preconditioning (IPC) in a resistance exercise (RE) training session on the number of repetitions performed, total volume, and rating of perceived exertion in recreationally trained and normotensive men. Sixteen recreationally trained and normotensive men completed three RE sessi...

Talent identification in Brazilian basketball lacks systematization. The present study aimed to create a mathematical model to assess the sport's potential of young basketball players and test its psychometric properties. One hundred seventy-eight young male players (12 to 17 years old; regional/state competitive level) underwent a multidimensional...

Training-intensity distribution (TID) is considered the key factor to optimize performance in endurance sports. This systematic review aimed to: I) characterize the TID typically used by middle-and long-distance runners; II) compare the effect of different types of TID on endurance performance and its physiological determinants; III) determine the...

The load in resistance training is considered to be a critical variable for neuromuscular adaptations. Therefore, it is important to assess the effects of applying different loads on the development of maximal strength and muscular hypertrophy. The aim of this study was to systematically review the literature and compare the effects of resistance t...

The aim of this study was to investigate the acute effect of ischemic preconditioning (IPC) in a session of resistance exercise (RE) for upper and lower limbs on the heart rate variability (HRV) in normotensive and trained men. sixteen normotensive and trained men visit the laboratory in five sessions in non-consecutive days. The first two sessions...

The purpose of this investigation was to examine the acute effects of resistance exercise (RE) and different manual therapies (static-stretching and manual massage) performed separately or combined on blood pressure (BP) responses during recovery in women with normal BP. Sixteen recreationally strength-trained women (age: 25.1 ± 2.9 years; height:...

The coach plays a central role in the identification, selection and development of talent. The aim of this study was to investigate the opinion of Brazilian coaches about the importance of different factors for the development of young basketball players. A total of 94 coaches from different clubs and with diverse professional experience completed...

Electromyographic Activation of Pectoralis Major and Triceps Brachii during Dumbbell Pullover. JEPonline 2021;24(4):1-11. The purpose of this study was to compare the electromyographic activity of pectoralis major (PM), sternal (PMS) and clavicular portions (PMC) and triceps brachii long portion (TB) muscles, with different elbow positions in the d...

Reis N, Sant'Ana L, Moreira L, Brown A, Mansur H, Ferreira P, Novaes J, Ribeiro A, Vianna J. Acute Effect of Ischemic Preconditioning on Performance and Metabolic Responses in Crossfit® Practitioners. JEPonline 2021;24(4):54-64. The purpose of this study was to analyze the acute effect of ischemic preconditioning on performance and metabolic respon...

Na corrida, a demanda de ajustes para otimizar os estímulos para a obtenção de melhor desempenho é algo relevante e indispensável. Com isso, a prescrição para o treinamento de corrida, seja esta curta, média e longa distância, deve ser estritamente adequada, assim como todo o processo recuperativo, permitindo assim, melhores adaptações fisiológicas...

Diferentes volumes de repetições e cargas de trabalho nas respostas pressóricas de idosos hipertensos: Uma revisão sistemática Diferentes volúmenes de repetición y cargas de trabajo en las respuestas a la presión de los ancianos hipertensos: Una revisión sistemática Abstract Objective: To synthesize the findings of chronic effects and the differenc...

With aging comes a reduction in neuromuscular and neuromotor function. Different strategies have been used to mitigate these functional losses. Certain manual therapy techniques and interventions have been explored with regard to their ability to improve functional capability and balance in an older adult population. The purpose of this study was t...

Acute hemodynamic responses are not different for mono and multiarticular exercises for the same muscle group As respostas hemodinâmicas agudas não são diferentes para exercícios mono e multiarticulares para o mesmo grupo muscular Las respuestas hemodinámicas agudas no son diferentes para ejercicios de articulaciones únicas y multiarticulares para...

Citation: Toledo, R.; Dias, M.R.; Toledo, R.; Erotides, R.; Pinto, D.S.; Reis, V.M.; Novaes, J.S.; Vianna, J.M.; Heinrich, K.M. Comparison of Physiological Responses and Training Load between Different CrossFit ® Abstract: The purpose of the present study was to compare the heart rate (HR), blood lactate and training load between different CrossFit...

The purpose of the present study was to compare heart rate (HR), blood lactate and training load between different CrossFit® workouts, with equalized total volume in men and women. The study included 23 individuals (13 men and 10 women) experienced in CrossFit® training, who performed two workouts with different training types (as many reps as poss...

CrossFit ® training is one of the fastest-growing fitness activities in the world due to its varied functional movement and competition experience. The performance is present in almost every workout of the day (WOD); however, there is a lack of knowledge in the science that did not allow us to fully understand the performance determinants of CrossF...

The purpose of the present study was to compare the acute effect of the foam roller (FR) (before dynamic stretching) with dynamic stretching (DS) on the active hip flexion range of motion (AROM) in healthy individuals. Eighteen recreationally trained women were recruited. After familiarization, the participants were randomly divided with balanced i...

This study examined individual, task, and environmental constraints that influence the career progression of youth Brazilian elite basketball players and the probability of reaching Novo Basquete Brasil (NBB) and to determine if the association of the relative age effect (RAE) is a key factor in the career progression. The sample consisted of 4,692...

Objective: Identify the anaerobic threshold (AnT) through blood lactate concentrations (LTDmax) and rating of perceived exertion (RPE) by the Dmax method (RPETDmax), and to evaluate the correlation between these methods. Methods: Sixteen male long-distance runners participated in the study. Participants performed a gradual incremental test in leg p...

Article already published. https://clinmedjournals.org/articles/ijsem/international-journal-of-sports-and-exercise-medicine-ijsem-7-183.php?jid=ijsem

O pré-condicionamento isquêmico (PCI) é um procedimento que consiste na aplicação de um aparelho para a oclusão vascular (OV), alternando momentos de OV e reperfusão. O PCI é um método de trabalho empregado para bloquear o fluxo sanguíneo de maneira remota e não invasiva, através de um torniquete pneumático antes de realização de um exercício. Dive...

Objective: Verify the incidence and rate of joint and muscle injuries with the practice of CrossFit® and the potential risk factors for injuries in men and women. Methods: A total of 184 CrossFit® participants (97 men and 87 women). A questionnaire was conducted based on characterization, training routine, injuries, and additional information. The...

Resistance training is an excellent intervention for obtaining different physiological improvements in the elderly. The present study aimed to investigate the chronic effects of different neuromuscular training on cardiovascular, cardiorespiratory, and walking performance responses in the elderly. One hundred five people (64 women and 41 men) parti...

Background Interval training is an important strategy for promoting physiological adaptations. Therefore, this study aimed to verify the chronic effects of interval training (TI) with different intensities on hemodynamic, autonomic and cardiorespiratory variables of physically active elderly people. Methods Twenty-four physically active older men...

Purpose. the aim of this study was to validate the 3-Day Physical Activity Recall (3DPAR) for measuring daily energy expenditure in children and adolescents. Methods. children and adolescents, a total of 148 participants, were recruited in 10 schools. the data collection was carried out in a period of 11 months. the measurements of weight, skinfold...

O objetivo do presente estudo foi descrever a distribuição da carga interna de treinamento (CIT) direcionada a diferentes tipos de treinamentos durante uma temporada de jogadores de voleibol profissionais. A CIT foi registrada em todas as sessões realizadas durante 30 semanas de treinamento da temporada, considerando os seguintes tipos de treinamen...

O objetivo do presente estudo foi descrever a distribuição da carga interna de treinamento (CIT) direcionada a diferentes tipos de treinamentos durante uma temporada de jogadores de voleibol profi ssionais. A CIT foi registrada em todas as sessões realizadas durante 30 semanas de treinamento da temporada, considerando os seguintes tipos de treiname...

Physical exercise is seen as the main ally for health promotion, preventing and protecting the organism from several diseases. According to WHO, there is a tendency of constant growth in the elderly population in the coming years. The regular practice of exercises by the elderly becomes relevant to minimize the deleterious effects of the aging proc...

Physical exercise is seen as the main ally for health promotion, preventing and protecting the organism from several diseases. According to WHO, there is a tendency of constant growth in the elderly population in the coming years. The regular practice of exercises by the elderly becomes relevant to minimize the deleterious effects of the aging proc...

The aims of this study were to compare muscle activity of the anterior deltoid, medial deltoid, and posterior deltoid in the bench press, dumbbell fly, shoulder press, and lateral raise exercises. Thirteen men experienced in strength training volunteered for the study. Muscle activation was recorded during maximum isometric voluntary contraction (M...

The purpose of the present study was to verify the acute effect of sodium bicarbonate supplementation on symptoms of gastrointestinal discomfort, acid-base balance and intermittent isometric handgrip test performance in JiuJitsu athletes. Ten male (22.2 ± 3.9 years; 174 ± 0.07 cm; 74.5 ± 8.9 kg) jiujitsu athletes participated in this counterbalance...

Ischemic preconditioning (IPC) has been used to increase performance in sports. The aim of this study was to compare the acute effects of IPC with different warm-up methods on the number of repetitions and total volume in resistance exercise (RE). Sixteen healthy men recreationally trained in RE participated in this study. After the anthropometric...

RESPONSE TO MANUSCRIPT CLARIFICATION FOR ISCHEMIC PRECONDITIONING IMPROVES RESISTANCE TRAINING SESSION PERFORMANCE Em nossos estudos sobre IPC (7,18) há uma visão mais específica sobre a aplicação prática. Neste sentido, nosso grupo foi primeiro a verificar os efeitos do IPC em uma sessão de treinamento resistido, com seis exercícios, multiarticul...

Blood flow restriction (BFR) can be used during resistance training (RT) through pressure application with pneumatic (pressurized) cuffs (PC) or non-pneumatic (practical) cuffs (NPC). However, PC are expensive and difficult to use in the gym environment compared to NPC. The main aim was to compare, correlate, and verify the hormonal and metabolic r...

Background Interval training is a method with high acceptance in prescription to increase health and can be an essential intervener in improving cardiovascular function. Objective This study aimed to verify the effects of eight weeks of interval training with different intensities on hemodynamic and autonomic function, which were assessed through...