Rafael Soncin

University of São Paulo | USP · Laboratory of Biomechanics

Com a leitura deste livro: Encontrarás em detalhe a análise cinesiológica e biomecânica dos principais exercícios de treino de força, sejam eles mais direcionados para os membros superiores, inferiores ou para o tronco Dominarás as componentes críticas e variantes de dificuldade e facilidade de inúmeros exercícios, tais como o agachamento, afundo...

Men’s 110 metres hurdles is one of the oldest disciplines in the Olympic Games and yet scarce anecdotal reports are found to pinpoint technical elements indicators of success. The approach technique to the hurdles has been raised by coaches as a potential element of success however it seems that the approach strategies undertaken to the first hurdl...

We aimed to compare electromyographic activity of the external portion of the pectoralis major, latissimus dorsi and triceps brachii long head in an acute resistance training session between bench press (BP), lat pull down, pullover and triceps lying exercises. Concentric and eccentric phases electromyographic activity were compared. pectoralis maj...

Introduction: The best strategy for improving knee extensor power, a major functional capacity indicator in older adults, is power training. Nonetheless, the training intensity required to induce optimal gains is yet to be found. Objective: Our purpose was to compare knee extensor peak power responses between low, moderate, and high intensity load...

Background: CrossFit is recognized as one of the fastest growing high-intensity functional training modes in the world. However, scientific data regarding the practice of CrossFit is sparse. Therefore, the objective of this study is to analyze the findings of scientific literature related to CrossFit via systematic review and meta-analysis. Methods...

In high level championships small details are able to define the swimming medalists. Overall 0.01 s represents just a short piece of swimming final time, but between elite swimmers just 1.12% of the final time performance in 50 meters freestyle are improved annually. In this perspective greater block time differences over swimming final time differ...

Introduction: There is a high incidence of Anterior Cruciate Ligament (ACL) injuries in soccer and 37% of this happens during landing after a jumping event. The measure of valgus knee moment during landing of a Drop Jump (DJ) has been considered a gold standard test to predict the risk of ACL injury in young athletes. Furthermore, researchers have...

Conquistar as primeiras posições em competições de futebol é apenas para alguns times. Assim, um melhor entendimento do jogo se torna crucial mediante essa competitividade. O objetivo do presente estudo foi determinar variáveis de scout que melhor descrevem as características técnicas e táticas dos times que participaram de Liga dos Campeões na tem...

O objetivo do estudo foi identificar os modelos que melhor explicam as relações entre as variáveis do scout dos jogos da Copa do Mundo de futebol de 2014. Foram analisados os 32 jogos da competição. Os dados foram retirados do site oficial da Federação Internacional de Futebol (FIFA). Os resultados indicaram que os modelos para as variáveis passes...

Conquistar as primeiras posições em competições de futebol é apenas para alguns times. Assim, ummelhor entendimento do jogo se torna crucial mediante essa competitividade. O objetivo do presenteestudo foi determinar variáveis de scout que melhor descrevem as características técnicas e táticasdos times que participaram de Liga dos Campeões na tempor...

The aim of this study was to propose a new force parameter, associated with swimmers' technique and performance. Twelve swimmers performed five repetitions of 25 m sprint crawl and a tethered swimming test with maximal effort. The parameters calculated were: the mean swimming velocity for crawl sprint, the mean propulsive force of the tethered swim...

Kinesio taping consists of a technique which uses the application of an elastic adhesive tape. It has become a widely used rehabilitation modality for the prevention and treatment of musculoskeletal disorders. The objective of this study was to verify the effect of the application of Kinesio Taping Denko® in three conditions (facilitation, inhibiti...

Methods: It was a randomized, single-blinded and controlled study in which 18 males (28.0 ± 6.7 years old; 85.8 ± 8.2 kg mass; 1.80 ± 0.07 m tall; 0.97 ± 0.04 m lower limb length) performed barbell back squat exercise with different conditions of Kinesio Taping Denko(®) applications: Facilitation, inhibition and placebo. Previous to the mentioned...

Introdução: Kinesio Taping é uma técnica realizada com aplicação de fitas elásticas sobre a pele, que se propõe a produzir determinados efeitos com fins de prevenção e tratamento das lesões musculoesqueléticas. No entanto, os meios pelos quais tais efeitos ocorrem continuam sendo investigados e discutidos, principalmente no que diz respeito à utili...

Kinesio taping consists of a technique which uses the application of an elastic adhesive tape. It has become a widely used rehabilitation modality for the prevention and treatment of mus-culoskeletal disorders. The objective of this study was to verify the effect of the application of Kinesio Taping Denko ® in three conditions (facilitation, inhibi...

Introduction: Measuring knee extensors' power in elderly population is crucial but not accessible to everyone. Objective: To provide a method to calculate knee extensors' power in a conventional knee extension machine. Method: Thirteen sedentary elderly women (69.3±4.1 years) performed six knee extensions as fast as possible. Kinematic data, an a...

Introdução: O futebol é um esporte intermitente, com diversas capacidades fisiológicas envolvidas, tendo a preparação física como base de sustentação dos aspectos técnico-táticos. Num jogo, o deslocamento do atleta se deve a diversos fatores, sendo importante considerar suas funções nos respectivos setores. Neste âmbito, o meio campo é considerado...

O objetivo do estudo foi identificar os modelos que melhor explicam as relações entre as variáveis do scout dos jogos da Copa do Mundo de futebol de 2014. Foram analisados os 32 jogos da competição. Os dados foram retirados do site oficial da Federação Internacional de Futebol (FIFA). Os resultados indicaram que os modelos para as variáveis passes...

The purpose of this study was to investigate the effects of exercise order on electromyographic activity in different muscle groups among youth men with experience in strength training. Three sets of 8 RM were performed of each exercise in two sequences order: (a) sequence A: bench press, chest fly, shoulder press, shoulder abduction, close grip be...

O objetivo do presente estudo foi analisar a validade dos parâmetros de potência absolutos e relativos do Running-based Anaerobic Sprint Test (RAST) com base no teste de Wingate (WAnT). Doze voluntários do sexo masculino com idade de 25,50 anos (± 2,32) realizaram os testes RAST e WAnT. Foram observados valores significativos (p < 0,01) de correlaç...

Objetivo: Identificar os modelos que melhor explicam as relações entre as diferentes variáveis do scout dos jogos da Copa das Confederações realizada em 2013. Métodos: Foi considerado para análise o scout, composto por 12 variáveis, dos 16 jogos da competição. Para verificar a existência de relação entre todas as variáveis, foi realizada uma anális...

OBJECTIVE: The aim of the present study was to propose an individualized familiarization method for vertical jumps and to verify its effect on intra-subject variability. METHODS: Fifty three men (mean ± S.D.; age 23.5 ± 3.3; height 1.76 ± 0.08 m; mass 72.8 ± 8.6 Kg; body fat 12.9 ± 5.2%) performed successive jumps to reach the proposed stability le...

The purpose of this study was to assess the effect of training load regulation, using the CMJ at the beginning of the session, on the total plyometric training load and the vertical jump performance. 44 males were divided into 4 groups: No Regulation Group (nRG), Regulation Group (RG), Yoked Group (YG) and Control Group (CG). The nRG received 6 wee...

Electromyographic activity during maximal isometric contraction combined with local sinusoidal vibration Study aim : To compare the electromyographic activity during maximal isometric contraction alone or combined with local sinusoidal vibration. Material and methods: A group of 6 men aged 23 - 29 years performed 3 maximal voluntary contractions of...

Objective: To diagnosis of stress and anxiety’s factors pre-competitive in soccer players of the under-20 category. Sample: The sample were 28 athletes under-20 category of a club of participant soccer of the final phase of the Integração Diário Tarde Championship 2007. Methodology: Applied the "Questionnaire of stress and anxiety pre-competitive i...

The objective of this study was to compare the Somatotype, Explosive force, Speed, Anaerobic and Aerobic resistance between semi-professional and professional athletes of sub-20 category. For that, 20 athletes were separated into two groups and were respectively carried through the following tests with its variables: Somatotype; Vertical jump witho...