Cesar Cavinato Cal Abad

Reference Center of Sport Science - Social Service of Indutry (CRCE-SESI)

To investigate the RAE in elite female soccer players, the absolute and relative birthdate distributions of players who disputed the Women's World Cup were assessed. Differences between observed and expected distributions were analyzed using chi-square and effect sizes. The birthdates of 1224 female soccer players were assessed in Under-17 (N=336),...

The present study aimed to examine the changes that occurred in vertical jump and isokinetic dynamometer (ISK) performances at the beginning of a preparatory period (PRE) and at the start of the competitive period (POST). Sixteen U-17 elite female volleyball players, from a national level (15.34 ± 1.19 years; 66.35 ± 7.95 kg; 169.22 ± 24.79 cm), pe...

t To describe and verify the characteristics and the level of correlation among anthropometric, dry-land, and in-water physical fitness performances, 32 professional Brazilian water polo players (Mean ± SD: Age - 22.2 ± 4.4 yrs., BM - 90.2 ± 9.9 kg, BH - 190.3 ± 10.1 cm, BMI - 26.4 ± 2.4 kg/m2 ) at the national and international levels were evaluat...

27th Annual Congress of the EUROPEAN COLLEGE OF SPORT SCIENCE 30 Aug - 2 Sep 2022, Sevilla, España

Purpose: This study aims to investigate the relationship between split disciplines and overall extreme ultra-triathlon (EUT) performance and verify the relationship among physiological and neuromuscular measurements with both fractional and total EUT performance while checking which variables could predict partial and overall EUT race time. Methods...

Purpose To investigate the effects of triathlon racing under extreme conditions on metabolic and immune/inflammatory responses. Methods Thirteen amateur athletes participated in an extreme triathlon competition (swim – 3.8 km; cycling – 180 km; running – 4 2 km; with a 3,700 m accumulated altitude). Blood samples were collected on three different...

The aim of this study was to investigate the effects of moderate altitude (2800 m) on neuromuscular performance, body-mass, rating of perceived exertion, total quality recovery, and global positioning system–motion variables (distance covered, sprint distance, number of accelerations, and top-speed) during soccer training and official matches. Seve...

Flywheel (FW) apparatus is a non-gravity-dependent exercise system that has been proposed to increase eccentric workload and skeletal muscle strength. The acute effect of FW exercise on cardiac, hemodynamic, autonomic, and neuromuscular responses remains scarce. The present study aimed to investigate the heart rate (HR), blood pressure (BP), HR var...

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...

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...

The aim of this study was to compare heart rate recovery (HRR) and its association with energy systems of contributionafter isocaloric exercise sessions conducted at low (LI) and moderate (MI) intensity. Nine subjects randomly underwent two isocaloric exercise sessions, one conducted at LI (10% < velocity from anaerobic threshold) and other at MI (...

The aim of this study was to determine the main characteristics of a "good teacher" through the use of questionnaires designed to assess teaching skills and competences, considering the point of view of teachers, principals, and students. In total, 82 teachers, 14 principals, and 625 middle-school students from 5 public schools in São Paulo state p...

This study aimed to investigate changes and correlations between mood states and various physiological stress markers after a 7-week preseason period among elite female soccer players. Twenty-four elite female soccer players participated in this study (26.4 +/- 3.7 years). Their internal training load, mood states, day and evening salivary testoste...

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...

Optimum levels of muscle power constitute a major determinant of performance in a great variety of sports. The present study aimed to provide reference values for lower-limb muscle power assessed during the incremental jump squat (JS) test in elite athletes (i.e., professional athletes competing at international level). We pooled data from all JS t...

Purpose: To evaluate the effect of drop jumps (DJs) on performance time and pacing in a field test (ie, 1000 m) commonly used to evaluate endurance runners and to evaluate running and jumping performance in male and female athletes separately. Methods: Twenty elite endurance runners (male, n = 10, 27.8 [7.0] y, 62.3 [5.2] kg; female, n = 10, 25....

Journal of Science and Cycling

To investigate centesimal age (CA) and relative age effect (RAE) in elite male futsal players their date of birth and court-position were accessed through the official FIFA website. The absolute and relative frequency distributions of player births were quantified by quartiles and semesters. The two-way ANOVA and the Chi-Square analysis were applie...

RESUMO O objetivo deste estudo foi identificar relações entre respostas do sistema nervoso autônomo com as ações técnicas, ajustes metabólicos e cardiovasculares durante o surfe competitivo. A amostra foi composta por 15 surfistas profissionais do sexo masculino, com idade de 25,7 ± 2,5 anos. Os resultados são apresentados como média ± desvio padr...

The primary aim of this study was to examine the differences in change of direction (COD) deficit between elite futsal, soccer, handball, and rugby players. A secondary aim was to compare the performance in both COD and linear speed tests among these athletes. One-hundred and sixty-one elite male players from four team-sports performed a 20-m linea...

The aim of this study was to describe the time course (within 2 h post-exercise) of heart rate variability (HRV) recovery following a traditional repeated sprint ability (RSA) test applied to youth soccer players. Twenty-four young soccer players (18.4 ± 0.5 years) undertook the following assessments: (1) 10 min rest in the seated position for HRV...

This study examined the relationships between vertical jump asymmetries and speed and power performance in elite female soccer athletes. Sixteen professional female soccer players (age: 23.0 ± 3.8 years; body mass: 60.2 ± 7.3 kg; height: 165.1 ± 5.5 cm) from the same professional club participated in this study. Athletes performed unilateral and bi...

Purpose: To examine the variations in the velocity of contraction (Vc) assessed using tensiomyography, vertical jumping ability, and sprinting speed induced by 4 different exercise protocols (ie, strength, sprint, plyometric, and technical training sessions) in 14 male national-team rugby players (age 21.8 [2.6] y, weight 83.6 [8.5] kg, and height...

Purpose: This study examined the relationships between the Yo-Yo Intermittent Recovery Test level 1 (Yo-Yo IR1) and resting heart rate variability (HRV) and submaximal 5'-5' test derived measures in novice male soccer players. Methods: Forty players (11.54 ± 0.58 years) from a soccer academy participated in this study, performing physical tests...

This study examined the age-specific development of vertical jump height, straight and change-of-direction (COD) speed, and COD deficit in one-hundred and eighty-two elite soccer players from different age-categories (U15, U17, U20, and Senior). All participants were players of two distinct clubs and were undertaking different training routines, as...

This study examined the selective influences of one-repetition maximum (1RM) values (assessed in the half-squat [HS]) and bar-power production (assessed in both HS and jump squat [JS] exercises) on the physical performance of male and female team sport athletes from four different sports. Three-hundred and three elite players (31 Olympians) from fo...

Introduction: Knowing which physiological variables predict running performance could help coaches to optimize training prescription to improve running performance. Objective: The present study investigated which physiological respiratory responses could predict 3000-m running performance. Methods: Seventeen amateur runners (29.82±7.1years; 173.12±...

The aims of this study were to describe the session rating of perceived exertion (sRPE), total quality recovery (TQR), and variations in countermovement jump (CMJ) height throughout nine weeks of a competitive period in young female basketball players. In total, 10 young female basketball players (17.2 ± 0.4 years; 71.8 ± 15.0 kg; 177.2 ± 9.5 cm) p...

This study aimed to examine the associations between a series of mechanical variables automatically generated by a portable force plate (PFP) and the actual performance of professional sprinters over a 150-m course. To test these correlations, twelve top-level sprinters performed vertical jumps (squat and countermovement jumps; SJ and CMJ, respecti...

The present study compared the competitive balance (CB) of Brazilian professional football with those of Germany, Spain, France, England, Italy and Portugal first division leagues, between the period from 2003/2004 to 2016/2017. In addition, a trend line of the period and the overall effect was analysed. The CB was measured by the concentration of...

The aim of this study was to compare and examine the differences in several neuromuscular assessments between female National Olympic Team (Rio-2016) and National College Team handball players (2015-Gwangju Summer Universiade). Twenty-eight elite female handball players of the National Brazilian Olympic (n = 12) and College (n = 16) teams participa...

The aims of this study were to (1) assess the relationship between selected speed-power related abilities (determined by 20-m sprint, unloaded countermovement and squat jumps [CMJ and SJ] and loaded jump squat [JS]) and performance in two distinct change of direction (COD) protocols (Zigzag and T-Test), and (2) determine the magnitude of difference...

This study aimed to compare vertical jump ability (squat-jump [SJ] and countermovement-jump [CMJ]), relative to body mass mean propulsive power in the jump-squat (MPP-REL JS), and the 0-5, 5-10, and 10-20 m acceleration and speed among soccer players from the same professional club, divided into age-categories (U15 [n = 20], U17 [n = 53], U20 [n =...

The aim of this study was to compare the effects of two different mixed training programs (optimum power load [OPL] + resisted sprints [RS] and OPL + vertical/horizontal plyometrics [PL]) on neuromuscular performance of elite soccer players during a short-term training preseason. Eighteen male professional soccer players took part in this study. Th...

24. Aims To investigate the home advantage (HA) in the Copa Libertadores da América (CLA) from 2005 to 2015. Methods A naive analysis was applied considering how many times a team that played the second leg at home qualified for the next round. To verify differences between home, away and draw results, the Chi-square ( χ² ) and the Full Bayesian S...

The aim of this study was to describe the variations in power performance of elite Paralympic judo athletes across three consecutive training cycles of preparation for the ParaPan American Games, the World Championship and the Paralympic Games. Eleven Paralympic judokas from the Brazilian National team participated in this study. They were repeated...

Jorge, G, Garrafoli, MT, and Cal Abad, CC. Seasonal repeated sprint ability with change of direction variations in U17 and U20 elite Brazilian soccer players: a comparative study. J Strength Cond Res 34(5): 1431-1439, 2020-This study aimed to describe seasonal variations of repeated sprint with change-of-direction ability in young elite Brazilian s...

There are several methods used in sport science to identify asymmetries in athletes, given their purported relevance to injury prevention and performance optimization. We aimed to verify whether asymmetries provided by isokinetic assessments, jump tests, and tensiomyography (TMG) are associated with each other, and whether their respective function...

The aim of this study was to investigate the differences in loaded and unloaded jump performances between distinct age categories of top-level volleyball players from the same club. Forty-three volleyball players were divided into four age groups: under-17, under-19, under-21 and professional. Vertical jumping height for squat jump (SJ), countermov...

To the editor: I am writing this email because we found that one of the authors of the paper, Dr Leandro, had his last name published incorrectly. I believe it was an error by one of the authors who submitted the article. I would ask for your help to change the name of Dr Leandro who was responsible for all the surgical procedures of the study. I w...

Sprint performance relies on many different mechanical and physiological factors. The purpose of this study was to identify, among a variety of strength-power exercises and tensiomyography parameters, the best predictors of maximum running speed in elite sprinters and jumpers. To test these relationships, nineteen power track and field athletes, 4...

The present study aimed to compare the effects of moderate-intensity continuous and high-intensity interval exercise training (ET) on exercise tolerance, cardiac morphometry and function, hemodynamic, and cardiac autonomic modulation in myocardial infarcted mice. Wild-type mice (WT) were divided into four groups: sedentary WT (S); WT myo-cardium in...

Vertical jump height (VJ) is one of the most sensitive measures to quantify training-related fatigue and athletic performance in elite athletes. Currently, however, there is no equipment designed to graphically deliver the daily performance changes in VJ compared with the smallest worthwhile change (SWC), which is considered essential in “progressi...

O objetivo deste estudo foi analisar a produção científica brasileira sobre o Atletismo entre 1999 e 2013. Foram identificados 162 artigos, e selecionados 55 estudos que abordaram o Atletismo como temática principal do estudo. Destes, 43 artigos (78,2%) foram relacionados com a Biodinâmica do Movimento Humano e 12 (21,8%) com a Pedagogia do Movimen...

Objectives. - This study aimed to compare the differences in vertical jumping abilities between top-level athletes from distinct sports specialties. Material and methods. - Soccer players (n = 21), tennis players (n = 24), endurance runners (n = 15) and power athletes (n = 19) volunteered to participate in this study. The testing routines comprise...

The aim of this study was to evaluate the relation between the maximum mean propulsive power (MPP) obtained in the loaded jump squat (JS) and half squat (HS) exercises and functional performances in vertical jumps, 40 m linear speed (VEL) and change-of-direction (COD) tests, using the median split technique. Twenty-two male rugby sevens players fro...

Background: This study aimed to compare the predictive value of muscle power (peak power, mean power until the peak-velocity or mean propulsive power) in relation to the jump height achieved during the jump squat performed at different loads. Methods: One hundred and ninety-four elite athletes performed jump squats against loads corresponding to 4...

Heart rate variability has been widely used to monitor athletes’ cardiac autonomic control changes induced by training and competition, and recently shorter recording times have been sought to improve its practicality. The aim of this study was to test the agreement between the (ultra-short-term) natural log of the root-mean-square difference of su...

[This corrects the article DOI: 10.1371/journal.pone.0142078.].

Background: The aim of this study was to compare backs and forwards rugby union players recruited to a National team in the following physical and physiological indicators: anthropometrics, squat jump (SJ), countermovement jump (CMJ), 10- and 30-m sprint, resting heart rate variability (HRV), Yo-Yo test and heart rate (HR) at 2-min of test. Metho...

The aim of this study was to determine the force-velocity relationship and test the possibility of determining the 1 repetition maximum (1-RM) in “free-weight” and Smith-machine bench- presses. Thirty-six male top-level athletes from three different sports were submitted to a standardized 1-RM bench-press assessment (free-weight or Smith-machine, i...

To verify the cardiac autonomic response following the Yo-Yo IR1 test and a simulated basketball match (SM), 20 young female basketball players (16.92±1.07 years; 179.60±9.27 cm; 73.33±15.71 kg; BMI = 22.59±3.56) performed the Yo-Yo intermittent recovery test (Yo-Yo) and an SM. Heart rate (HR) and heart rate variability (HRV) were monitored continu...

The purpose of this study was to investigate the lactate response to two Brazilian Jiu-Jitsu (BJJ) matches and to determine whether there is a correlation in the lactate responses across both matches. Twenty-one BJJ black belt athletes performed two 8-min matches separated by 48 hrs. To assess lactate responses, blood samples were obtained at rest,...

Swimmers are often tested on both dry-land and in swimming exercises. The aim of this study was to test the relationships between dry-land, tethered force-time curve parameters and swimming performances in distances up to 200 m. 10 young male high-level swimmers were assessed using the maximal isometric bench-press and quarter-squat, mean propulsiv...

This study compared the values of bar-peak force (PFBar) and power (PPBar), body-peak force (PFBody) and power (PPBody) and bar-mean propulsive power (MPPBar) in different jump-squat (JS) conditions: unloaded condition (UC); bar-loaded condition (BLC) and optimum bar-MPP condition (OBC). Twenty-five soccer players performed the JS using a bar with...

Tensiomyography (TMG) has been used as a simple and non-invasive tool to assess the mechanical properties of skeletal muscles. The TMG-derived velocity of contraction (Vc), which can be derived from the ratio between maximal radial displacement and the sum of contraction time and delay time, has been proposed for evaluating athletes. However, its s...

The aim of this study was to verify the power of VO2max, peak treadmill running velocity (PTV), and running economy (RE), unadjusted or allometrically adjusted, in predicting 10 km running performance. Eighteen male endurance runners performed: 1) an incremental test to exhaustion to determine VO2max and PTV; 2) a constant submaximal run at 12 km·h...

The aim of this study was to compare the muscle power and maximal isometric strength capacities of Olympic and visually impaired Paralympic judo athletes. Twenty-eight elite judo athletes (7 men and 7 women per group) from the permanent Brazilian National Paralympic and Olympic teams took part in this study. After a specific warm-up, the athletes p...

This study aimed at testing whether there are mean propulsive velocities (MPV) capable of maximizing the mean propulsive power (MPP) during the execution of bench-press (BP), bench-throw (BT), half-squat (HS) and jump-squat (JS). Additionally, we assessed the differences in MPP/MPV between ballistic and traditional exercises. Seventeen male rugby s...

The aim of this study was to examine the intra-day and inter-day reliability of ultrashort- term vagal-related heart rate variability (HRV) in elite rugby union players. Forty players from the Brazilian National Rugby Team volunteered to participate in this study. The natural log of the root mean square of successive RR interval differences (lnRMSS...

Training at the optimum power load (OPL) is an effective way to improve neuromuscular abilities of highly trained athletes. The purpose of this study was to test the effects of training using the jump squat (JS) or Olympic push-press (OPP) exercises at the OPL during a short-term preseason on speed-power related abilities in high-level under-20 soc...

The aim was to investigate the effects of far infrared (FIR) ray emitting clothes on indirect markers of exercise-induced muscle damage and physical performance recovery after a plyometric bout applied to soccer players. Twenty-one male players (18.9±0.6 years; 70.8±5.01 kg; 178.3±0.06 cm) performed 100 drop-jumps. Six hours after the bout, athlete...

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...

Background: The purpose of this study was to analyze the effects of four weeks of training cessation (TC) on specific endurance performance, resting and post-exercise heart rate variability (HRV) and neuromuscular capacities of high-level endurance runners. Methods: Eighteen endurance runners, 8 men and 10 women (25.5 ± 7.5 years; 166.9 ± 7.6 cm...

Aim: The purpose of this study was to analyze the effects of four weeks of training cessation (TC) on specific endurance performance, resting and post-exercise heart rate variability (HRV) and neuromuscular capacities of high-level endurance runners. Methods: Eighteen endurance runners, 8 men and 10 women (25.5 ± 7.5 years; 166.9 ± 7.6 cm; 54.2 ± 6...

Prupose: To investigate the effects of a 5-km high-intensity interval exercise (HIIE) on heart rate variability (HRV) and subsequent strength performance. Methods: Nine trained males performed a control session composed of a half-squat strength exercise (4 × 80% of one repetition maximum—1 RM) in isolation and 30-min, 1-, 4-, 8-, and 24-h after an...

This study compared the physical performance of Paralympic sprinters with visual impairments (PSVI) and their guides in jump/sprint tests. Ten PSVI and guides executed squat-jumps (SJ), countermovement-jumps (CMJ), horizontal-quintuple right/left leg jumps (QR/QL), decuple-jumps (DEC) and 50-m sprint tests. The guides were superior to the PSVI in S...

Change of direction ability (COD speed) is an important physical component of snow sports. The aim of this study was to investigate the relationships between regular speed and vertical jumping ability, and COD speed in elite snow athletes. Moreover, the correlations between relative mean propulsive power (assessed in the jump squat exercise) and CO...

The aim of this study was to compare the anthropometric characteristics and physical capacities (vertical jumping, speed, agility, and endurance abilities) among different age -categories of Brazilian rugby players from the same high-level club and to compare their respective data with those obtained by the national team players. Eighty-eight male...

Aim: to determine the effects of 28 days of inactivity on neuromuscular performance of elite women pole-vaulters. Methods: Four athletes undertook measurements of rate of force development (RFD), unloaded and loaded vertical jump tests, drop jumps and a 45 m sprint test before and after a transition period of planned inactivity. Results: The RFD...

Purpose: to quantify the training loads reported by karate athletes of the National Team in the week immediately prior to their participation in the 2015 Pan American Games. Methods: 11 elite karate athletes (7 men and 4 women: 24.42 ± 3.75 years; 1.70 ± 0.09 m; 69.6 ± 13.2 kg) from the Brazilian national team took part in this study. The sessio...

Objectives: The aim of this study was to evaluate the effect of caffeine ingestion on performance and estimated energy system contribution during simulated taekwondo combat and on post-exercise parasympathetic reactivation. Methods: Ten taekwondo athletes completed two experimental sessions separated by at least 48 hours. Athletes consumed a cap...

Abstractcontext and objective: This study aimed to evaluate different mathematical post-analysis methods of determining lactate threshold in highly and lowly trained endurance runners. Design and setting: Experimental laboratory study, in a tertiary-level public university hospital. Method: Twenty-seven male endurance runners were divided into...

To describe the heart rate variability (HRV) of high-level sprinters in both the supine and standing positions, the HRV of 7 male (24±6 yr; 80±8 kg and 182±7 cm) and 11 female (27±5 yr; 61±4 kg; 167±5 cm) high level Brazilian sprinters was measured in the standing and SU body-positions in both the time and frequency domains. The heart rate (HR) and...

The aims of this study were to estimate the magnitude of variability and progression in actual competitive and field vertical jump test performances in elite Paralympic sprinters with visual impairment in the year leading up to the 2015 Parapan American Games, and to investigate the relationships between loaded and unloaded vertical jumping test re...

The aim of this study was to test the relationships between jump squat (JS) and Olympic push press (OPP) power outputs and performance in sprint, squat jump (SJ), countermovement jump (CMJ) and change of direction (COD) speed tests in elite soccer players. 27 athletes performed a maximum power load test to determine their bar mean propulsive power...

Purpose: The aim of this study was to determine whether athletes from different sports disciplines present similar mean propulsive velocity (MPV) in the half-squat (HS) during submaximal and maximal tests, enabling prediction of 1 repetition maximum (1-RM) from MPV at any given submaximal load. Methods: Sixty-four male athletes, comprising Ameri...

The jump squat is one of the exercises most frequently used to improve lower body power production, which influences sports performance. However, the traditional determination of the specific workload at which power production is maximized (i.e., optimum power load) is time-consuming and requires one-repetition maximum tests. Therefore, the aim of...

The aim of this study was to test the effects of 2 different velocity-oriented power training regimens by either increasing or decreasing the jump squat velocity during jump training sessions applied 3 times a week for 6 weeks in soccer players. Twenty-four elite under-20 soccer players were randomly assigned to an increased bar velocity group (IVG...

Objective The purpose of this study was to review current knowledge on exercise physiology and sports training that can be applied to develop training programs for Mixed Martial Arts. Methods A non-systematic literature review was conducted to search for articles related to history, physiology and training of Mixed Martial Arts and other Martial A...

Objetivos: o presente estudo teve por objetivo descrever o padrão de estatura dos jogadores que disputaram a Copa do Mundo da FIFA 2014® e verificar se existem diferenças significantes na estatura desses jogadores conforme a posição ocupada dentro de campo. Materiais e métodos: a estatura e a posição dos jogadores convocados para a Copa do Mundo fo...