Blar i NTNU Open på forfatter "Øvretveit, Karsten"
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Achievement goal profiles, and perceptions of motivational climate and physical ability in male Brazilian jiu-jitsu practitioners
Øvretveit, Karsten; Sæther, Stig Arve; Mehus, Ingar (Journal article; Peer reviewed, 2018)Background and Study Aim: Brazilian jiu-jitsu (BJJ) is a martial art with high rates of attrition. At present, little is known about the achievement goals of martial arts practitioners, particularly in BJJ. Thus, our aim ... -
Achievement goal profiles, and perceptions of motivational climate and physical ability in male Brazilian jiu-jitsu practitioners
Øvretveit, Karsten; Sæther, Stig Arve; Mehus, Ingar (Journal article; Peer reviewed, 2018)Background and Study Aim: Brazilian jiu-jitsu (BJJ) is a martial art with high rates of attrition. At present, little is known about the achievement goals of martial arts practitioners, particularly in BJJ. Thus, our aim ... -
Acute physiological and perceptual responses to Brazilian jiu-jitsu sparring: the role of maximal oxygen uptake
Øvretveit, Karsten (Journal article; Peer reviewed, 2018)Sparring is a training form in combat sports designed to simulate fighting. This study sought to assess physiological and perceptual responses to Brazilian jiu-jitsu (BJJ) sparring and their relationship with maximal oxygen ... -
Aerobic interval training improves maximal oxygen uptake and reduces body fat in grapplers
Øvretveit, Karsten (Journal article; Peer reviewed, 2019)BACKGROUND: Despite regularly engaging in high-intensity grappling, Brazilian jiu-jitsu (BJJ) athletes have a moderate maximal oxygen uptake (V̇O2max). The aim of this study was to evaluate the efficacy and feasibility of ... -
Anthropometric and Physiological Characteristics of Brazilian Jiu-Jitsu Athletes
Øvretveit, Karsten (Journal article; Peer reviewed, 2018)Øvretveit, K. Anthropometric and physiological characteristics of Brazilian jiu-jitsu athletes. J Strength Cond Res 32(4): 997–1004, 2018—The aim of this study was to describe anthropometric and physiological characteristics ... -
Anthropometric, physiological, and psychological characteristics of Brazilian jiu-jitsu athletes - A cross-sectional study
Øvretveit, Karsten (Master thesis, 2018)Brazilian jiu-jitsu (BJJ) is a modern martial art with roots in Japan and Brazil. Despite growing popularity, there is a paucity of studies on the sport and its athletes. Thus, the aim of this study was to determine ... -
Capacity and confidence: What can be gleaned from the link between perceived and actual physical ability in Brazilian jiu-jitsu practitioners?
Øvretveit, Karsten (Peer reviewed; Journal article, 2020)Among the many modern iterations of grappling-based combat sports, Brazilian jiu-jitsu (BJJ) has emerged as one of the most popular. In addition to its well-established effectiveness in competition, it is considered to be ... -
Mastery goals are associated with training effort in Brazilian jiu-jitsu
Øvretveit, Karsten; Sæther, Stig Arve; Mehus, Ingar (Journal article; Peer reviewed, 2019)Problem statement: Brazilian jiu-jitsu (BJJ) is a grappling-based combat sport with a high attrition rate. Central to BJJ training is simulated competition in the form of sparring, which may have implications for athlete ... -
Maximal strength training improves strength performance in grapplers
Øvretveit, Karsten; Tøien, Tiril (Journal article; Peer reviewed, 2018)The aim of this study was to assess the short-term effects of maximal strength training (MST) as an accessory to grappling training on strength performance in competitive Brazilian Jiu-Jitsu (BJJ) athletes. Fourteen male ... -
Post-Exercise Hypotension in Brazilian Jiu-Jitsu
Belo, Wesley Rodrigues; de Castro, Lucas Fenta; Palmieri, Diego Cesar; dos Santos, Luiz Gustavo Dias; Herrera-Valenzuela, Tomás; dos Santos, Marco Antonio Ferreira; Øvretveit, Karsten; Simão, Roberto (Peer reviewed; Journal article, 2020)Hypertension is a leading preventable cause of morbidity and mortality worldwide. Exercise is a widely recommended treatment strategy that has been shown to cause both acute and chronic reductions in blood pressure. This ...