Benedito Denadai

• PhD
• Professor (Full) at São Paulo State University

Fontanetti, G, Barreto, RV, Junior, RC, Marangoni, V, Denadai, BS, Greco, CC, and Lima, LCR. The use of the self-selected rest interval method is as effective for optimizing postactivation performance enhancement in elite athletes as employing the best fixed rest interval. J Strength Cond Res 39(1): 10-15, 2025-This study investigated whether the a...

The objective of this study was to test the hypothesis that neuromuscular fatigue influences the rate of torque development (RTD) in a similar manner to isometric torque. Nine men participated in this study and performed 5-min all-out isometric tests for knee extensors (KE) and plantar flexors (PF) muscles, to determine the end-test torque (ET) and...

This study investigated the effect of caffeinated chewing gum (GUMCAF) on muscle fatigue (isometric vs. dynamic) after severe-intensity cycling bouts. Fifteen trained male cyclists participated in four visits. Each visit involved two severe-intensity cycling bouts (Δ1 and Δ2) lasting 6 min, separated by a 5-min recovery period. Muscle fatigue was a...

Borszcz, FK, de Aguiar, RA, Costa, VP, Denadai, BS, and de Lucas, RD. Agreement between maximal lactate steady state and critical power in different sports: A systematic review and Bayesian's meta-regression. J Strength Cond Res 38(6): e320-e339, 2024-This study aimed to systematically review the literature and perform a meta-regression to determin...

This study aimed to verify the effects of 4 weeks of high-intensity interval training (HIIT), heavy (HRT) and explosive (ERT) resistance training on aerobic, anaerobic and neuromuscular parameters and performance of well-trained runners. Twenty-six male athletes were divided into HIIT (n = 10), HRT (n = 7) and ERT (n = 9) groups. Maximal oxygen upt...

The enigmatic benefits of acute limb ischemic preconditioning (IP) in enhancing muscle force and exercise performance have intrigued researchers. This study sought to unravel the underlying mechanisms, focusing on increased neural drive and the role of spinal excitability while excluding peripheral factors. Soleus Hoffmann (H)‐reflex /M‐wave recrui...

Our aim was to investigate if using a warm-up routine that included parachute-resisted sprints with large hand-paddles improves 50 m freestyle performance in trained collegiate swimmers. Twelve swimmers (23.9 ± 2.2 years, 179 ± 7 cm, 77.1 ± 10.6 kg) participated in the study and completed two 50-m freestyle races, each preceded by a different warm-...

Introduction: Eccentric cycling (ECC CYC ) has attracted considerable interest due to its potential applicability for exercise treatment/training of patients with poor exercise tolerance as well as healthy and trained individuals. Conversely, little is known about the acute physiological responses to this exercise modality, thus challenging its pr...

There is great variability in responsiveness to post-activation performance enhancement (PAPE). Factors such as greater expression of type II muscle fibers and experience with strength training are associated with greater responsiveness to PAPE. We investigated whether there is an association between markers of muscular function and morphology and...

This study aimed to investigate the effects of eccentric cycling (ECCCYC) training on performance , physiological, and morphological parameters in comparison to concentric cycling (CONCYC) training. Searches were conducted using PubMed, Embase, and ScienceDirect. Studies comparing the effect of ECCCYC and CONCYC training regimens on performance, ph...

This study aimed to explain the V̇O2${\dot{V}}_{{{\rm{O}}}_{\rm{2}}}$ slow component (V̇O2sc${\dot{V}}_{{{\rm{O}}}_{\rm{2}}{\rm{sc}}}$) and muscle fatigue during cycling at different intensities. The muscle fatigue of 16 participants was determined through maximal isokinetic effort lasting 3 s during constant work rate bouts of moderate (MOD), heav...

We previously reported that creatine supplementation improved intermittent isometric exercise performance by augmenting the total impulse performed above end‐test torque (total IET′). However, our previous analyses did not enable mechanistic assessments. The objective of this study was to determine if creatine supplementation affected the IET′ spee...

O presente estudo investigou os efeitos agudos da realização de um protocolo de pré-ativação com bola pesada na força muscular dos rotadores mediais do ombro e velocidade de dois tipos de arremesso (estático e dinâmico em suspensão) em atletas de handebol. Foi identificada diminuição significante (p < 0,01) da velocidade de arremesso estático (-2,6...

The purpose of this study was to verify the heart rate variability (HRV) and heart rate (HR) kinetics during the fundamental phase in different intensity domains of cycling exercise. Fourteen males performed five exercise sessions: (1) maximal incremental cycling test; (2) two rest‐to‐exercise transitions for each intensity domain, that is, heavy (...

The prediction of running performance at different competitive distances is a challenge, since it can be influenced by several physiological, morphological and biomechanical factors. In experienced male runners heterogeneous for maximal oxygen uptake (VO2max), endurance running performance can be well predicted by several key parameters of aerobic...

Purpose: Explosive performance is increased right after performing loaded resistance exercise, which is known as post-activation performance enhancement (PAPE). Method: We investigated the effects of a plyometric exercise (PLYO) consisting of five sets of six drop-jumps from a 52-cm platform with a load corresponding to 20% body mass on changes in...

Aim: The aim of the present study was to screen for differences in isokinetic peak torque, hamstrings-to-quadriceps ratio and proprioception within the lower limbs of female handball athletes. Methods: Twelve college-level female handball athletes with no previous experience with resistance training performed five maximal isokinetic contractions of...

This study aimed to investigate if ACTN3 gene polymorphism impacts the susceptibility to exercise-induced muscle damage (EIMD) and changes in running economy (RE) following downhill running. Thirty-five healthy men were allocated to the two groups based on their ACTN3 gene variants: RR and X allele carriers. Neuromuscular function [knee extensor is...

The objective of the present study was to describe the total and fragmented external loads, at different intensities, of soccer referees in European and South American competitions during official matches through a systematic review and meta-analysis of cross-sectional studies. A systematic review was conducted in April, 2020. In all, 32 studies we...

Background: Based on the need to investigate the demands imposed on referees in the current model of physical evaluation and during professional games, this study's objective was to compare these demands in the physical test versus the games. Methods: Thus, it evaluated the heart rate, distance covered, time, and speed of all 14 referees in the...

New findings: What is the central question of this study? Does muscle size, maximal force and exercise intensity influence the recovery time constant for the finite impulse above critical torque (τIET')? What is the main finding and its importance? This study showed that muscle size and maximal strength have different influences on the parameters...

This study aimed to compare the maximal and submaximal aerobic parameters between two incremental running tests, one being horizontal and the other an incline-based test, namely the incline incremental running test (IIRT). Twenty endurance-trained trail runners completed two incremental treadmill tests, until exhaustion. The first test was performe...

Purpose There is a profound gap in the understanding of the eccentric cycling intensity continuum, which prevents accurate exercise prescription based on desired physiological responses. This may underestimate the applicability of eccentric cycling for different training purposes. Thus, we aimed to summarize recent research findings and screen for...

We aimed to investigate the influence of alpha-actinin-3 (ACTN3) R577X polymorphism on responsiveness to post-activation performance enhancement (PAPE) of countermovement jumps (CMJ) in untrained subjects. Sixteen untrained men were allocated into two groups according to their ACTN3 gene alleles: homozygous for the X allele (XX, n = 9) or homozygou...

Thirteen healthy male subjects (age 28 ± 7 years) performed tests for critical power and W′ determination and two square-wave high-intensity exercises until exhaustion either with prior very-heavy intensity cycling (EXP) or without (CON). Prior exercise bout induced a depletion of 60% of W′. After 10 min of recovery, W′ reconstitution was not fully...

Fatigue can be defined as exercise-induced strength loss. During running, fatigue can be partially explained by repetitive low-intensity eccentric contractions-induced muscle damage (EIMD). Previous studies showed that a bout of downhill running (DR) attenuated subsequent EIMD. Thus, we tested if a 30-min DR bout would attenuate fatigue induced by...

New findings: What is the central question of this study? Does creatine supplementation augment the total torque impulse accumulated above end-test torque (IET) during severe-intensity knee-extensor exercise by attenuating the rate of decrease in peak potentiated twitch torque (PT)? What is the main finding and its importance? Creatine augmented t...

The present study investigated the relationships between changes in running economy (RE) and indirect muscle damage markers following downhill running (DHR) to test the hypothesis that decreased RE after DHR would be associated with decreases in muscle function. Forty-five young men ran downhill (-15%) for 30 minutes at the velocity corresponding t...

We investigated if the same isometric preconditioning protocol (IPP) attenuates the magnitude of muscle damage induced by different maximal eccentric exercise protocols in the elbow flexors. Sixty-four untrained men were assigned to either two experimental or two control groups. Participants in the experimental groups performed an IPP prior to eith...

New findings: What is the central question of this study? Can interval blood-flow-restricted (BFR) cycling training, undertaken at a low intensity, promote a similar adaptation to oxygen uptake ( V ̇ O 2 ) kinetics to high-intensity interval training? What is the main finding and its importance? Speeding of pulmonary V ̇ O 2 on-kinetics in healthy...

This study examined the effects of anthocyanin-rich antioxidant juice (AJ) on the recovery of exercise-induced muscle damage (EIMD) and the running economy (RE) following downhill running (DHR). Thirty healthy young men were randomly divided into two blinded groups and consumed either AJ or placebo (PLA) for nine days (240 mL twice-a-day). On day 5...

Intermittent blood flow restriction to local or remote vascular beds induces endogenous protection against ischemia-reperfusion injury in several tissues and organs. When applied non-invasively by placing occlusion cuffs on the limbs, this ischemic conditioning has been shown to elicit an acute ergogenic response. However, the underlying mechanisms...

New findings: What is the central question of this study? What role do neuromuscular fatigue mechanisms play in resistance training-induced adaptations of the impulse above end-test torque (IET) after the training period? What is the main finding and its importance? IET and global and peripheral fatigue were increased after a short period of resis...

A link between muscle fatigue, decreased efficiency and the slow component of oxygen uptake (VO2sc) has been suggested. However, a cause-effect relationship remains to be elucidated. Although alterations in VO2 kinetics after elevated baseline work rate have previously been reported, to date no study has observed the effect on muscle force producti...

The present study aiming to verify the interference of different conditions (treadmill vs. track) on critical velocity (CV) values, as well as on the correlation to the 3000-meter performance (v3000m), and thus infer about the specificity of each values as training parameter for this distance. Seven runners (15.3±1.4 years) were submitted to a maxi...

Oral session at the 23rd Annual Congress of the European College of Sport Science

Walking involves small adjustments to maintain body balance. However, the demand for these adjustments may be different during downhill walking. The aim of this study was to analyze the effect of periodized downhill walking training on neuromuscular responses of knee flexors (KF). Seventeen active males (Age = 22.9 ± 3.9 years) were randomly assign...

Running economy (RE) is impaired following unaccustomed eccentric-biased exercises that induce muscle damage. It is also known that muscle damage is reduced when maximal voluntary isometric contractions (MVIC) are performed at a long muscle length 2-4 days prior to maximal eccentric exercise with the same muscle, a phenomenon that can be described...

We hypothesized that prior exercise would attenuate the muscle fatigue accompanied by oxygen uptake slow-component (V̇O2SC) behavior during a subsequent very-heavy (VH)-intensity cycling exercise. Thirteen healthy male subjects performed tests to determine the critical power (CP) and the fixed amount of work above CP () and performed 6 square-wave...

The purposes of this study were to determine whether low intensity resistance training combined with blood flow restriction (LI-BFR) could affect the concentric hamstrings/quadriceps muscle strength ratio (Hcon:Qcon) of professional soccer players with Hcon:Qcon imbalance (Study 1), and whether hamstrings strength response observed after LI-BFR is...

Resumo O presente estudo investigou os efeitos agudos da realização de um protocolo de pré-condicionamento com bola pesada (PC) na força muscular dos rotadores mediais do ombro e velocidade de dois tipos de arremesso em atletas de handebol. Foi identificada diminuição significante (p < 0,01) da velocidade de arremesso estático (-2,6 ± 1,3 m/s-1) ap...

Rapid force capacity, identified by rate of rise in contractile force at the onset of contraction, i.e., the rate of force development (RFD), has been considered an important neuromuscular parameter of physical fitness in elderly individuals. Randomized control studies conducted in adults have found that resistance training may elicit different out...

The objective of this study was to test the hypotheses that end-test torque (ET) (expressed as % maximal voluntary contraction; MVC) is higher for plantar flexors (PF) than knee extensors (KE) muscles, whereas impulse above ET (IET) is higher for KE than PF. Thus, we expected that exercise tolerance would be longer for KE than PF only during the ex...

Conference presentation

Conference presentation

Usualmente, a Velocidade Crítica (VC) representa a intensidade limite do exercício sustentável, porém os perfis de resposta do V̇ O2 e da concentração de lactato sanguíneo tendem a alcançar patamares máximos, não toleráveis por período longo de tempo, quando analisados entre populações não treinadas jovens ou adultos. Assim, o presente estudo anali...

Background Several strategies have been used to improve running economy (RE). Defined as the oxygen uptake required at a given submaximal running velocity, it has been considered a key aerobic parameter related to endurance running performance. In this context, concurrent strength and endurance training has been considered an effective method, alth...

The highest exercise intensity that can be maintained at the end of a ramp or step incremental test (i.e., velocity or work rate at VO2max - Vpeak/Wpeak) can be used for endurance performance prediction and individualization of aerobic training. The inter-individual variability in Vpeak/Wpeak has been attributed to exercise economy, anaerobic capac...

This study compared velocity (v) and bioenergetical factors using different methods applied for the swimming aerobic capacity evaluation. Ten elite female swimmers (17.6 ± 1.9 yrs., 1.70 ± 0.05 m and 61.3 ± 5.8 kg) performed an intermittent incremental velocity protocol until voluntary exhaustion to determine the v associated to the individual anae...

Objective: To evaluate the rate of force development (RFD) and the rate of electromyography rise (RER) of global and local trunk muscles in women with and without low back pain. Design: Cross-sectional study. Setting: Laboratory setting. Participants: Twenty-eight women divided into low back pain (LBP, n = 14) and control groups (CG, n = 14)...

Slow component of oxygen uptake (VO2SC) kinetics and maximal oxygen uptake (VO2max) attainment seem to influence endurance performance during constant-work rate exercise (CWR) performed within the severe intensity domain. In this study, it was hypothesized that delaying the attainment of VO2max by reducing the rates at which VO2 increases with time...

Oral presentation regarding the effects consuming an antioxidant, anthocyanin-rich, juice on indices of exercise-induced muscle damage and running economy following downhill running

Introduction: The respiratory compensation point (RCP) is the metabolic rate for a maximal incremental test, from which the control of the acid-base balance is lost. However, the critical velocity (CV) defines the upper limit of the heavy exercise domain, in which the exhaustion is not related to metabolic disturbance. Objective: To compare the phy...

Our purpose was to examine the swimming biophysical responses at velocities (v) of 97.5, 100 and 102.5% of the maximal lactate steady state (MLSS). Ten elite female swimmers performed three-to-five 30-min constant tests at imposed paces to determine 97.5, 100 and 102.5%MLSS v. Gas exchange, blood lactate concentration ([La-]), stroke rate (SR) and...

DOI: http://dx.doi.org/10.5007/1980-0037.2016v18n2p197 The purpose of this study was to determine the level of agreement between critical power (CP) and intensity corresponding to 50% of the difference (50% Δ) between oxygen uptake (VO2) at lactate threshold (LT) and maximal oxygen uptake (VO2max) in untrained subjects during cycling exercise. Fif...

The aim of this study was to investigate the effect of prior exercise on the heart rate (HR) and oxygen uptake (VO2) off-kinetics after a subsequent high-intensity running exercise. Thirteen male futsal players (age 22.8 ± 6.1 years) performed a series of high-intensity bouts without prior exercise (control), preceded by a prior same intensity cont...

Severe obesity affects metabolism with potential to influence the lactate and glycemic response to different exercise intensities in untrained and trained rats. Here we evaluated metabolic thresholds and maximal aerobic capacity in rats with severe obesity and lean counterparts at pre- and post-training. Zucker rats (obese: n = 10, lean: n = 10) we...

New Findings What is the central question of this study? Does the rate of utilization of W ′ (the curvature constant of the power–duration relationship) affect fatigue during severe‐intensity exercise? What is the main finding and its importance? The magnitude of fatigue after two severe‐intensity exercises designed to deplete the same fraction of...

Background: exercise-induced muscle damage (EIMD) is a multifactorial phenomenon that induces muscle function loss because of mechanical and immune stressor stimuli. This immunological stress is mostly caused by inflammation and increased oxidative status. Cherries are fruits that contain a phenolic compound known as anthocyanin, which serves as a...

Although, beneficial in determined contexts, eccentric exercise-induced muscle damage (EIMD) might be unwanted during training regimens, competitions and daily activities. There are a vast number of studies investigating strategies to attenuate EIMD response after damaging exercise bouts. Many of them consist of performing exercises that induce EIM...

The present study aimed to analyze and compare the effects of four different interval-training protocols on aerobic fitness and muscle strength. Thirty-seven subjects (23.8 ± 4 years; 171.7 ± 9.5 cm; 70 ± 11 kg) were assigned to one of four groups: low-intensity interval training with (BFR, n = 10) or without (LOW, n = 7) blood flow restriction, hi...

Introduction The characterization of the hyperbolic power-time (P-tlim) relationship using a two-parameter model implies that exercise tolerance above the asymptote (Critical Power; CP), i.e. within the severe intensity domain, is determined by the curvature (W’) of the relationship. Purposes The purposes of this study were (1) to test whether the...

DOI: http://dx.doi.org/10.5007/1980-0037.2015v17n5p539 Eccentric exercise training using low intensity-high volume approach has been performed to improve maximal muscle strength and power. The aim of this study was to compare the effects of short-term downhill walking and level walking training on lower limb strength and maximal oxygen uptake of a...

In this study, it was hypothesized that the peak torque reliability would depend on the type of muscular action. The aim of this study was to analyze and to compare the reliability of isometric peak torque (IPT) and isokinetic peak torque at speeds of 60º.s-1 and 180°.s-1 (CPT60 and CPT180, respectively) of elbow flexors (EF) and elbow extensors (E...

Este estudo objetivou investigar a influência do alongamento estático (AE) no pico de torque (PT) e na taxa de desenvolvimento de força (TDF) dos extensores do joelho. Doze indivíduos ativos fizeram os seguintes testes em ordem aleatória: 1) Cinco contrações isocinéticas concêntricas máximas para os extensores do joelho (EJ) em cada velocidade angu...

Presentation at the 20th Annual Congress of the European College of Sport Science

A determinação dos limiares ventilatórios (LV1 e LV2) é sensível aos procedimentos matemáticos adotados em sua determinação, o que não ocasionalmente pode fornecer parâmetros de intensidade com tendência a sub- ou superestimar a demarcação de zonas de treinamento. O objetivo deste estudo foi comparar a relação fisiológica entre três métodos de anál...

Presentation at the IX International Congress on Physical Education and Human Motricity

Presentation at the IX International Congress on Physical Education and Human Motricity

Presentation at the IX International Congress on Physical Education and Human Motricity

O objetivo deste estudo foi analisar o efeito do exercício prévio severo (EPS) sobre a potência crítica (PC) e a capacidade de trabalho anaeróbio (CTA) determinados durante o exercício de ciclismo. Sete indivíduos realizaram os seguintes protocolos em cicloergômetro: (a) teste progressivo para determinação do limiar ventilatório (LV), consumo máxim...

O efeito do treinamento sobre a cinética do VO2 no ponto de compensação respiratória (PCR) foi analisado no presente estudo. Foram avaliados 10 corredores (15,5±1,5 anos, 1,7±0,1 metros e 54,9±11,5kg) em um teste progressivo (incrementos de 1,0 km×h-1×min-1, partindo de 7,0km×h-1), determinando-se PCR e VO2max. A análise da cinética do VO2 foi real...

The aim of this study was to investigate whether the maximal power output (Pmax) during an incremental test was dependent on the curvature constant (W′) of the power–time relationship. Thirty healthy male subjects (maximal oxygen uptake = 3.58 ± 0.40 L·min⁻¹) performed a ramp incremental cycling test to determine the maximal oxygen uptake and Pmax,...

The main objective of this study was to analyze the relationship between the responses of isometric peak torque (IPT) and maximal rate of force development (RFDmax) with the changes on stroking parameters in an exhaustive exercise performed in front crawl. Fifteen male swimmers performed, in different days, the following protocols: 1) maximal 400-m...

This study examined whether short-term maximal resistance training employing fast-velocity eccentric knee extensor actions would induce improvements in maximal isometric torque and rate of force development (RFD) at early (<100 ms) and late phases (>100 ms) of rising torque. Twenty healthy men were assigned to two experimental groups: eccentric res...

DOI: http://dx.doi.org/10.5007/1980-0037.2015v17n1p112 Atletas de diferentes esportes têm usado frequentemente exercícios de aquecimento como forma de preparação para a sessão de treinamento ou a competição. Entre as razões que levam os técnicos a adotarem este procedimento estão o aumento no metabolismo e na performance, como também a prevenção d...

The aim of this study was to analyze the relationship between the slope of the VO2 slow component (VO2sc) and exercise tolerance (tlim) during constant-work-rate (CWR) exercise performed within the severe intensity domain. Fifteen active subjects (VO2max = 41.2 ± 5.1 ml.kg-1.min-1) performed the following tests: 1) an incremental test to determine...

BACKGROUND AND OBJECTIVE: Muscle strength imbalance can be an important factor in hamstrings muscle strain. The main purpose of this study was to investigate the effects of downhill running on hamstrings/quadriceps torque (H/Q _{torque} ) and the electromechanical delay(H/Q _{EMD} ) ratios. METHODS: Fifteen active male individuals performed two max...

The aim of this study was to determine the correlation between the concentric hamstrings/quadriceps muscle strength (Hcon:Qcon) and cross-sectional area ratios (Hcsa:Qcsa) in professional soccer players with Hcon:Qcon imbalance. Nine male professional soccer players (25·3 ± 4·1 years) performed five maximal concentric contractions of the knee exten...

We examined the effects of the chronological age and sexual maturation on the running speed at lactate threshold (vLL) of children and adolescents. Eighteen boys, divided according to age (GC1: 11.00 to 13.50 and GC2: 13.51 to 15.99 years) and sexual maturation (GB1: levels 1 and 2 and GB2: levels 4 and 5 of pubic hair), performed an incremental tr...

Unlabelled: Prior high-intensity exercise can improve exercise performance during severe-intensity exercise. These positive alterations have been attributed, at least in part, to enhancement of overall oxygen-uptake (VO2) kinetics. Purpose: To determine the effects of prior heavy-intensity exercise on VO2 kinetics and short-term high-intensity e...

The present study aimed to verify the effects of 4 weeks of low-intensity blood flow restricted (BFR) training on time to exhaustion (Tlim) at severe-intensity exercise. Thirteen physically active subjects (23 ± 3.4 years; 70.6 ± 7.8 kg; 170.9 ± 10 cm) were as-signed to one of two groups: low-intensity interval training with (BFR, n=9) or without (...

Introduction: The validity of tethered-swimming to assess swimmer endurance capacity was analyzed in the present research. Objective: The aim of this study was to analyse the relationship between the mechanical power at maximal lactate steady state (PTethMLSS) with its respective parameter in free swimming (velocity at MLSS, vMLSS) and with others...