Renato Barroso

Renato Barroso
University of Campinas | UNICAMP · Departamento de Ciências do Esporte (DCE)

PhD

About

84
Publications
60,185
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1,017
Citations
Additional affiliations
January 2014 - present
University of Campinas
Position
  • Professor (Assistant)

Publications

Publications (84)
Article
Full-text available
The purposes of this study were to ascertain how physiological adaptations, as reflected by critical speed and distance above critical speed ( D′), impact the competitive performance of a world-class female long-distance swimmer; and to determine whether a model including the expenditure and recovery of D′ could be used to understand pacing in swim...
Article
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Training intensity distribution is important to training program design. The zones 1 to 2 boundary can be defined by the Talk Test and the rating of perceived exertion. The zones 2 to 3 boundary can be defined by respiratory gas exchange, maximal lactate steady state, or, more simply, by critical speed (CS). The upper boundary of zone 3 is potentia...
Article
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The aim of this study was to verify if exposure to the far-IR emitted by fabric (FIR) is able to improve the neuromuscular performance of the knee extensors of resistance-trained males regardless of changes of the temperature. It is a crossover, randomized, double-blind, and placebo-controlled trial. Fourteen resistance-trained males (age: 24.3 ± 4...
Article
The purpose of this paper was to conduct a systematic review and meta-analysis of studies that compared muscle hypertrophy and strength gains between resistance training protocols employing very low (VLL<30% of 1RM or >35 RM), low (LL30%-59% of 1RM, or 16–35 RM), moderate (ML60%-79% of 1RM, or 8 -15RM) and high load (HL≥80% of 1RM, or ≤7 RM) with m...
Article
The effects of plyometric training on middle- and long-distance running performances are well established. However, its influence on pacing behavior is still unclear. The aim of this study was to evaluate the effects of plyometric training on pacing behavior. Also, verify whether the adaptations induced by plyometric training would change ratings o...
Article
We examined the association between 50 m freestyle performance (50FS) and average speed (AS), peak speed (PS), minimum speed (MS) and intracyclic speed variation (ISV) and compared the speed curves from swimmers with different performance levels using functional analysis of variance (FANOVA). Fourteen male swimmers (50FS: 22.50 ± 0.58 s) performed...
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PURPOSE: Performance in running events, such as 1-Mile World Records (WR), depends both on having and effectively using energetic resources. Although often understood in terms of physiological capacity based on the Joyner model, the Critical Speed/D’ model is an alternative method of accounting for energetic capacity and use, based on prior perform...
Article
Background: there is a paradox between the development of strength-power abilities and the high volume of technical/tactical training in elite soccer players during the pre-season. This concurrent effect between aerobic and neuromuscular training regimes induce impairment in power performance. Methods: this study aimed to investigate the effect...
Article
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The aim of this study was to examine the associations between linear sprint, curve sprint (CS), change of direction (COD) speed, and jump performance in a sample of 17 professional female soccer players. All athletes performed squat and countermovement jumps, single leg horizontal triple jumps, 17-m linear sprint and CS test, and a 17-m Zigzag COD...
Article
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BACKGROUND: This study investigated the relationship between the lactate minimum (LACmin) and the 10- (T10) and 30-min (T30) continuous tests in swimmers. METHODS: Twelve swimmers (78.1 ± 3.1% of world record) performed the LACmin (hyperlactatemia: 2 x 50 m all-out 8-min apart, incremental part: n x 300 m 30-s apart), T30 and T10 using the front-c...
Article
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This study compared the effects of FAST and SLOW eccentric repetition tempo in a single exercise volume-matched intervention on muscle thickness (MT) and strength in resistance-trained men. Using a within- subject design, 13 subjects had each leg randomly assigned to SLOW (1-0-3) or FAST (1-0-1) repetition tempo. Subjects un- derwent an 8-week stre...
Article
We investigated the effects of different performance goals (best time vs. beat the opponent) on pacing behaviour during a 10-km cycling race and explored the influence of different performance level of opponents on ratings of perceived exertion (RPE), affective feelings and self-efficacy. Thirteen cyclists performed two time-trials (TT) and two rac...
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BACKGROUND: This study described the changes in selected points of the speed curve, stroke rate (SR), and stroke length (SL) of an elite butterfly swimmer and examined their relationship with average speed (AS) and competitive performance. METHODS: Over eight years, the male swimmer (50 and 100 m: 22.70 and 51.47 s) underwent 18 tests to assess AS...
Article
The study aimed to investigate the relationship between laboratory-assessed variables and cross-country marathon mountain biking (XCM-MTB) performance to suggest a more practical approach to monitor performance during the competitive phase. Nine elite athletes performed a battery of tests during the competitive phase of the season, one week before...
Article
BACKGROUND: The aim of the current study was to investigate the acute effects of different parachutes sizes on index of coordination and kinematics of competitive front-crawl male swimmers. METHODS: Ten male competitive swimmers (19±1 years old and 27.18±1.49s of 50 m freestyle short course best time) volunteered to participate. Experiments consist...
Article
Metabolic stress is a primary mechanism of muscle hypertrophy and is associated with microvascular oxygenation and muscle activation. Considering that drop-set (DS) and crescent pyramid (CP) resistance training systems are recommended to modulate these mechanisms related to muscle hypertrophy, we aimed to investigate if these resistance training sy...
Article
To describe the pacing pattern of 400m freestyle swimmers, understand how athletes select the first half compared to their 200-m race pace, and correlate critical speed (CS) and D’ with pacing parameters. The best all-time 400m performances were obtained, and 200m performances were retrieved from the same competition. Twenty-four performances were...
Article
Although used by resistance-trained individuals, it is unknown if increasing muscle strength prior to hypertrophy training leads to greater muscle growth and strength gains. We investigated muscle thickness and maximum strength in 26 resistance-trained men who were randomly assigned to either: STHT, consisted in a 3-week strength-oriented training...
Article
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This study compared the in-water bilateral leg kick speed difference between a Paralympic (PARA) and an Olympic athlete (OLY). PARA (former S10) was not eligible after his reclassification in 2019. OLY was a semi-finalist in 50m freestyle in the 2016 Olympics. Kick performance was assessed by a speedometer in one push-off ~15m maximal kick sprint....
Article
Background: The present study investigated the effects of resistance training combined with ischemic preconditioning (IPC) on muscle size and strength in resistance-trained men. Methods: Sixteen resistance-trained men were divided into two groups (Placebo and IPC) and trained twice a week for 6 weeks. Preconditioning protocols consisted of four,...
Article
Objectives: the aim of the present study was to verify the pacing strategy during a season of a Cross-Country Mountain Bike (XCO-MTB) and the effects of performance level, age and sex. Method: Overall, 802 paces in 4 age-sex categories were analyzed: male elite (EliteM; n = 272), female elite (EliteF; n = 170), male under-23 (U23M; n = 247) and fem...
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Background: It is currently unknown if muscle growth and strength gain are similar in both dominant and non-dominant limbs of the same individual with the same training load. Therefore, the objective of this study was to analyze initial muscle size and strength levels in both upper limbs and compare changes in muscle size and strength between domi...
Article
Purpose: To verify the affective feelings (AFs) and rating of perceived exertion (RPE) responses during a 10-km competitive head-to-head (HTH) running race and compare them with a time-trial (TT) running race. Methods: Fourteen male runners completed 2 × 10-km runs (TT and HTH) on different days. Speed, RPE, and AF were measured every 400 m. For...
Article
This study investigated the effects of a 4-week training with hand paddles (HPD) on front-crawl swimming performance (SP), clean swimming speed (SPEED), stroke rate (SR), stroke length (SL) and tethered force (TF). Twenty swimmers (10 men and 10 women) were paired according to performance and gender, and were randomly assigned to control (CON, 22.4...
Article
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There is a paucity of data on how manipulating joint angles during isolation exercises may impact overall session muscle activation and volume load in resistance-trained individuals. We investigated the acute effects of varying glenohumeral joint angle on the biceps brachii with a crossover repeated measure design with three di↵erent biceps curls....
Article
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The objective of the study was to investigate the effects of using lifting straps on the lat pull-down exercise on maximal strength, number of repetitions, and muscle activation. Twelve resistance-trained men participated (age 27 ± 4 years, body mass 84 ± 10 kg, height 177 ± 6 cm, resistance training experience 6.6 ± 2.4 years). All participants pe...
Article
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O objetivo deste estudo foi comparar a coordenação do nado borboleta de jovens nadadores em diferentes estágios maturacionais. Vinte e um nadadores entre 10 e 12 anos de idade divididos em dois grupos, de acordo com o estágio de maturação biológica em que se encontravam (EM2 - n=11 e EM3 - n=10) foram avaliados durante 25 m no nado borboleta em máx...
Article
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Carvalho, L and Barroso, R. Ischemic preconditioning improves strength endurance performance. J Strength Cond Res XX(X): 000-000, 2018-Ischemic preconditioning (IPC) has been used to improve performances in aerobic and anaerobic activities. However, a few studies aimed at observing the effects of IPC on resistance training. The purpose of this stud...
Article
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This study aimed to describe training characteristics as well as physical, technical and morphological changes of an elite Olympic swimming sprinter throughout his road to 21 s in the 50m freestyle. Over a ~2.5-year period, the following assessments were obtained: external training load, competitive performance, instantaneous swimming speed, tether...
Article
This study aimed to describe training characteristics as well as physical, technical and morphological changes of an elite Olympic swimming sprinter throughout his road to 21 s in the 50m freestyle. Over a ~2.5-year period, the following assessments were obtained: external training load, competitive performance, instantaneous swimming speed, tether...
Article
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This study investigated the effects of advanced training techniques (ATT) on muscular responses and if performing a second training session would negatively affect the training stimulus. Eleven strength-trained males performed a traditional strength training session (TST) and four different ATT: pre-exhaustion A (PE-A), pre-exhaustion B (PE-B), for...
Article
Introduction Recent studies reported improvements in aerobic performance after ischemic preconditioning (IPC) compared to a control or placebo condition. However, the effects of IPC on both skeletal maximal muscle strength and power have not been investigated. Summary of facts and results Considering the importance of muscle strength/power product...
Article
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This study describes heart rate (HR) responses during different small sided games (SSGs) in junior basketball players, and identifies the level of agreement between athlete and coach perceptions of internal training load calculated using the in-task rating of perceived exertion (RPE) method. Over a 6 week period, 12 male junior basketball players w...
Article
The aim of the present study was to compare the effects of self-selected and fixed repetition duration (RD) on resistance exercise (RE) volume, muscle activation, time under tension (TUT) per repetition and per session. Twelve resistance-trained men participated in the study. A randomized cross-over design was utilized and each participant performe...
Article
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Resisted sprint training consists of performing overloaded sprints, which may produce greater effects than traditional sprint training. We compared a resisted sprint training with overload control versus an unresisted sprint training program on performance in soccer players. Eighteen elite athletes were randomly assigned to resisted (RST) or unresi...
Article
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The aim of this study was to investigate the number of trials and sessions needed to remove learning effects and to stabilize measures in muscle power for upper and lower limbs in physically active individuals. Twentyfve healthy college-men were recruited for this study. Participants performed three sessions with fve trials of the following tests: m...
Article
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Introduction: We investigated differences in metabolic stress (lactate) and muscle activation (electromyography) when high load exercise is compared to a condition where blood flow restriction (BFR) is applied during the exercise or during the rest interval. Methods: Twelve participants performed high load resistance exercise with BFR during the...
Article
Purpose: This study compared the effects of resistance training (RT) and resistance training with instability (RTI) on neuromuscular and total training volume (TTV) outcomes obtained as part of the Instability Resistance Training Trial in Parkinson's disease (IRRT-PD). It also used a linear multiple regression (forward stepwise method) to identify...
Article
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We investigated whether a conditioning activity (8×12.5 m with 2.5 min-interval using both hand paddles and parachute) induced post-activation potentiation in swimming propulsive force and whether a swimmer's force level affected a post-activation potentiation response. 8 competitive swimmers (5 males and 3 females, age: 18.4±1.3 years; IPS=796±56)...
Article
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The combination of strength (ST) and plyometric training (PT) has been shown to be effective for improving sport specific performance. However, there is no consensus about the most effective way to combine these methods in the same training session, in order to produce greater improvements in neuromuscular performance of soccer players. Thus, the p...
Article
Hand paddles and parachutes have been used in order to overload swimmers, and consequently increase the propulsive force generation in swimming. However, their use may affect not only kinematical parameters (average speed, stroke length and stroke rate), but also time gaps between propulsive phases, assessed through the index of coordination (IdC)....
Article
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Abstract This qualitative-descriptive investigation examining the influence exerted by experienced soccer-players on the ranking obtained from the four best-ranked by their teams in the last four FIFA World Cups (WC). They were divided into experienced-players (at least one WC participation [+1WC]) or non-experienced players (no previous participat...
Article
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The effects of an enforced fast-start on long distance performance are controversial and seem to depend on the athlete's capacity to delay and tolerate metabolic disruption. The aim of this study was to investigate the effects of an enforced fast-start on 10-km running performance and the influence of the some physiological and performance variable...
Article
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Purpose: To assess swimmers’ session rating of perceived exertion (sRPE) after standardized sets of interval swimming training performed at the same relative intensity but with different total volume and repetition distance. Methods: Thirteen moderately trained swimmers (21.1 ± 1.1 y, 178 ± 6 cm, 74.1 ± 8.3 kg, 100-m freestyle 60.2 ± 2.9 s) perform...
Article
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This study compared anthropometric parameters among different military sports. One hundred and seventy male cadets of the Brazilian Air Force Academy, who were participants of athletics (n= 33, 20.5±1.3 years), basketball (n= 11, 19.9±1.8 years), fencing (n= 10, 19.9±0.7 years), soccer (n= 21, 20.9±1.6 years), judo (n= 17, 20.7±1.0 years), swimming...
Article
Full-text available
Purpose: To assess swimmers’ session rating of perceived exertion (sRPE) after standardized sets of interval swimming training performed at the same relative intensity, but with different total volume and repetition distance. Methods: Thirteen moderately-trained swimmers (21.1±1.1yrs, 178±6cm, 74.1±8.3kg, 100m freestyle = 60.2±2.9s) performed four...
Article
Running economy (RE) is defined as the energy cost to maintain a sub-maximal running velocity and seems to be affected by individual's neuromuscular characteristics, such as stiffness level. Both resistance training (RT) and whole body vibration training added to RT (WBV + RT) have been shown to influence those characteristics. Thus, it is conceiva...
Article
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This study investigated the effects of hand paddles, parachute and hand paddles plus parachute on the inter-limb coordination of butterfly swimming. Thirteen male swimmers were evaluated in four random maximal intensity conditions: without equipment, with hand paddles, with parachute and with hand paddles + parachute. Arm and leg stroke phases were...
Article
Full-text available
O objetivo deste estudo foi verificar se um protocolo de aquecimento geral realizado em esteira rolante afeta o desempenho da força máxima de membros superiores e inferiores. Doze homens treinados foram testados para força máxima (1RM) nos exercícios leg-press e supino reto nas condições: aquecimento geral (C-AQ) que foi realizado um aquecimento ge...
Article
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The purpose of this study was to compare the physical performance (i.e., strength, power, speed and endurance) between Brazilian elite soccer players from different categories of the same club: professionals (PRO), under--20 (U--20), and under--17 (U--17). Seventy--one soccer players from three categories (PRO=24; U--20=21 and U--17=26) were assess...
Article
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Session rating of perceived exertion (SRPE) is a practical method to assess internal training load in order to provide appropriate stimuli. However, coaches and athletes might rate training sessions differently, which can impair performance development. Also, SRPE might be influenced by athletes' training experience. We studied 160 swimmers of diff...
Data
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A single bout of resistance training, especially those comprising the performance of eccentric actions, induces damage to the muscle structure. Some characteristics of the eccentric exercise bout (i.e. the number and the intensity of contractions) may increase muscle damage. Thus, the aim of this study was to investigate if the number and the inten...
Article
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Stretching exercises have been traditionally incorporated into warm-up routines before training sessions and sport events. However, the effects of stretching on maximal strength and strength endurance performance seem to depend on the type of stretching employed. The objective of this study was to compare the effects of static stretching (SS), ball...
Article
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The precision of maximum strength assessments (1RM) is important to evaluate the functional capacity and to prescribe and to monitor the training load. Several factors can affect the precision of 1RM tests, including the warm-up procedure. General and specific warm-up routines are recommended in order to enhance performance. The effects of a specif...
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The purpose of this study was to compare the neuromuscular adaptations produced by strength-training (ST) and power-training (PT) regimens in older individuals. Participants were balanced by quadriceps cross-sectional area (CSA) and leg-press 1-repetition maximum and randomly assigned to an ST group (n = 14; 63.6 ± 4.0 yr, 79.7 ± 17.2 kg, and 163.9...
Data
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RESUMO: Tradicionalmente, as recomendações para a prescrição do treinamento de força podem ser baseadas tanto na intensidade relativa ao 1RM quanto no número de repetições máximas. Entretanto, sabe-se que o número máximo de repetições realizadas com a mesma carga relativa varia de acordo com o exercício e o tamanho do grupo muscular envolvido. Além...
Data
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A ordem dos exercícios refere-se à sequência de execução durante uma sessão de treinamento. Evidências demonstram que essa ordem pode afetar o número de repetições realizadas nos exercícios. A percepção subjetiva de esforço (PSE), assim como o número de repetições realizadas, depende da sobrecarga utilizada. Assim, alterações no número de repetiçõe...
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We aimed to investigate the role of betaine supplementation on muscle phosphorylcreatine (PCr) content and strength performance in untrained subjects. Additionally, we compared the ergogenic and physiological responses to betaine versus creatine supplementation. Finally, we also tested the possible additive effects of creatine and betaine supplemen...
Article
The aim of this study was to evaluate the influence of the subjects' level of maximal dynamic strength and training background on postactivation potentiation (PAP). A group of 23 subjects, composed of power track-and-field athletes (PT = 8), bodybuilders (BB = 7), and physically active subjects (PA = 8), participated in the study. Maximal dynamic s...
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A single bout of resistance exercise (RE) induces hormonal and immune responses, playing an important role in a long-term adaptive process. Whole-body vibration (WBV) has also been shown to affect hormonal responses. Evidence suggests that combining WBV with RE may amplify hormonal and immune responses due to the increased neuromuscular load. There...
Article
Accurate assessment of muscular strength is critical for exercise prescription and functional evaluation. The warm-up protocol may affect the precision of the 1 repetition maximum (1RM) test. Testing guidelines recommend performing both general and specific warm-ups before strength tests. The general warm-up intends to raise muscle temperature, whe...