Leandro de Lorenço-Lima

Mental strength is defined as a person’s ability to persist through challenging situations and recover from hardships and failures. Due to combat sports (CS) vigorous nature, several authors have identified various psychological factors modified through CS engagement and experience. This research aimed to determine the psychometrics of the Mental S...

Combat sports engagement has been shown to positively influence mental strength, resilience, and grit. PURPOSE: This study compared mental strength, resilience, and grit between grapplers (i.e., Brazilian Jiu-Jitsu, Judo and Wrestling), strikers (i.e., Muay Thai and Kickboxing), physically active and sedentary individuals. METHODS: The sample consi...

This study explored the differences in resilience, grit, self-efficacy, self-control, aggression, life satisfaction, and mental health between Brazilian jiu-jitsu white and black belts.

This study aimed to explore the extent to which the independent variables (IVs) resilience, grit, self-efficacy, self-control, aggression, and life satisfaction could predict mental health in Brazilian jiu-jitsu athletes

Engagement in combat sports (i.e., Brazilian Jiu-Jitsu and Judo) has been shown to influence grit and resilience due to their vigorous nature. PURPOSE: This study examined grit and resilience between grapplers and non-grapplers. METHODS: The sample consisted of 274 participants (73.4 % male) from 18 to 63 years of age, including 202 grapplers, 27 p...

Martial arts and combat sports have been shown to influence several desirable psychological factors positively. This quantitative study aimed to explore the differences in mental strength, resilience, grit, self-efficacy, self-control, aggression, life satisfaction, and mental health between belt ranks in Brazilian Jiu-Jitsu (BJJ) athletes. A sampl...

Mental strength is defined as a person’s ability to persist through challenging situations and recover from hardships and failures. Due to combat sports (CS) vigorous nature, several authors have identified various psychological factors modified through CS engagement and experience. This research aimed to determine the psychometrics of the Mental S...

Grit is expressed as hard work aiming to conquer life challenges while sustaining interest and effort throughout long periods and despite failures, adversities, and plateaus. Several benefits have been established in the literature related to higher levels of grit, including lower depression, higher life satisfaction, higher academic and financial...

Participation in sports has been shown to influence life satisfaction positively. In this study, perceptions of life optimization and mental wellness were examined between athletes and non-athletes. The sample consisted of 627 college students (222 male and 405 female) from 18 to 44 years of age. Participants included 555 non-athletes and 72 athlet...

STOP! If you are looking for a guide focused 100 percent on competition or martial arts techniques, this book is not for you. But if you are looking for a manual to sharpen your teaching skills as a martial arts instructor and improve your students’ experience, this book may give you some valuable insights. This book was written to provide instruct...

Background: In a fast-paced world, parents often search for extracurricular activities to allow children to develop life skills crucial for successful living in adulthood. Martial arts classes are generally considered a strong alternative due to their effectiveness in improving several physical and psychological skills. The present study aimed to p...

Brazilian JiuJitsu (BJJ) has gained substantial attention over the past decades, but still faces great absence of scientific production about its characteristics. To substantiate the approach to BJJ instruction, it is essential to understand the physical changes associated to its practice. The purpose of this investigation was to evaluate the chang...

STOP! If you are looking for a guide focused 100 percent on competition or Brazilian Jiu-Jitsu (BJJ) techniques, this book is not for you. But if you are looking for a manual to give you the foundation for becoming a competent instructor and improving your students’ experience, this book might present you with some valuable insights. The purpose...

Reactive oxygen species are produced during anaerobic exercise mostly by Fe ions released into plasma and endothelial/muscle xanthine oxidase activation that generates uric acid (UA) as the endpoint metabolite. Paradoxically, UA is considered a major antioxidant by virtue of being able to chelate pro-oxidative iron ions. This work aimed to evaluate...

In the world sports history the search for performance enhancement is unending. Some methods are adopted hypothetically as a way to promote positive physiological ergogenic effects. Many combat sport athletes use a snorkel, in conjunction with a nose clip, attempting to restrict the oxygen uptake and thus trigger positive physiological processes to...

Brazilian Jiu-Jitsu (BJJ) knowledge is very important for BJJ and Mixed Martial Arts coaches, once it’s necessary scientific tools to organize athletes’ periodization and load control. PURPOSE: The aim of this study was to determine the exercise intensity and metabolic characteristics during BJJ matches. METHODS: Sixteen BJJ practitioners, (6.11 ±...

In combat sports, the rapid weight loss is a strategy often used for the purpose of gaining an advantage over the opponent. In this process, the weight reduction is extremely sharp in a short period of time, which can cause a variety of physiological or psychological disorders, as well as a decreasing on sports performance. Therefore, this review a...

A creatina (Cr) possui papel de grande importância dentro do mundo esportivo. Para alguns atletas, o uso correto dessa substância ergogênica resulta em um maior aumento no desempenho durante o exercício. Sendo assim, a presente revisão teve como objetivo discutir informações sobre este suplemento, tendo em vista o auxílio aos atletas e profissionai...

Dietary creatine has been largely used as an ergogenic aid to improve strength and athletic performance, especially in short-term and high energy-demanding anaerobic exercise. Recent findings have also suggested a possible antioxidant role for creatine in muscle tissues during exercise. Here we evaluate the effects of a 1-week regimen of 20 g/day c...

Reactive oxygen species (ROS) are normally produced in humans during endurance (mainly by mitochondrial electron transport system) or resistance exercise (augmented xanthine oxidase activity in cytosol). Drastic drops in performance, precocious fatigue, exacerbated inflammation processes, and injury risk are regular outcomes of the excessive produc...

As lutas de jiu-jítsu demandam grande influência de força, velocidade, potência, resistência anaeróbia e flexibilidade. De acordo com o IBGE, apenas 28,2 % da população pratica algum tipo de exercício físico ou esporte. O principal motivo para isso é a falta de motivação para as atividades. Como alternativa, encontramos atividades fora do paradigma...

Some combat sports athletes have been used a snorkel (SK) combined with a nose clip during exercise. This method has been proposed to restrict the oxygen uptake and thus trigger physiological processes associated to hypoxia. This condition increases the erythropoietin release, elevating the hemoglobin production and thus oxygen transport, leading t...

INTRODUÇÃO: Os esportes de combate abrangem todas as modalidades que envolvem dois lutadores disputando entre si a vitória de uma luta, sendo ela determinada por pontos, perda dos sentidos, desistência ou desclassificação. Nos dias atuais, tais modalidades vêm ganhando grande espaço nas academias, dentre elas, o jiu-jitsu, que tem se popularizado n...