<p>During COVID-19, athletes have been forced to compete in the absence of audience. Athletic and cognitive performance have been shown to be both incremented and decremented when competing either with or without audience, something that has been termed ‘social facilitation’. The current study sought to investigate this effect in a naturalistic experiment due to the current pandemic, in a sport in which the effect has never been examined; mixed martial arts (MMA). A performance variable was constructed, and data from 86 fighters who competed during COVID-19 were collected and compared to previous competition history. In total, 586 bouts were analyzed. Data distribution and assumptions were explored in which non-normal distribution was found. Subsequently, a test of marginal homogeneity and a Wilcoxon Signed Ranks test were performed. The results showed that MMA fighters who won their bout without audience displayed poorer performance’s in previous bouts, which were attended by audience. The current study further explores the notion of social facilitation effects and suggests there may be a need to pro-actively incorporate training alternatives that could mitigate performance decrements in fighters who are prone to negative effects due to external stimuli, such as an audience. However, due to the limited observations in the non-audience condition the study results should be interpreted cautiously and considered highly preliminary.</p><p align="center"><strong> </strong></p>

Contemporarily, two martial arts have emerged as highly popular among youth; Mixed Martial Arts (MMA) and Brazilian Jiu-Jitsu (BJJ). Despite their popularity, we know little of how they affect individuals sociopsychologically. The current study sought to explore how the currently underexplored martial art disciplines may contribute to sociopsychological development among young people. In addition, it was investigated whether individuals who are predisposed to different traits may favour one sport over the other. This study was conducted with a longitudinal design; over the course of 5 months, 113 participants completed training in either condition. The results show that both groups displayed increased self-control and pro-social behaviour; however, MMA practitioners also reported increased aggressiveness, whereas BJJ practitioners experienced a decline in aggression. Accordingly, individuals who trained in MMA displayed substantially higher pre-existing aggression levels than the BJJ practitioners. The current results further corroborate research suggesting that modern martial arts and MMA may not be suitable for at-risk youth to practice, whereas traditional martial arts and sports with a healthy philosophical foundation may be effective in reducing antisocial behaviour while enhancing socially desirable behaviour among young people.

This paper introduces a model that explains psychosocial development by embedding the developmental concept of rough-and-tumble play (RTP) into the contextual settings of martial arts (MA). Current sport-for-change literature relies on theories that address contextual factors surrounding sport but agrees that sport in itself does not facilitate developmental outcomes. In contemporary times where western societies invest substantial resources in sport programs for their psychosocial contribution, this becomes problematic. If the contextual factors surrounding sport are exclusively what produce developmental outcomes, what is the rationale for investing resources in sport specifically? We challenge this idea and argue that although contextual factors are important to any social phenomena, the developmental outcomes from sport can also be traced to the corporeal domain in sport. To date, we have lacked the theoretical lenses to articulate this. The developmental concept of RTP emphasizes how “play fighting” between consenting parties stimulates psychosocial growth through its demand for self-regulation and control when “play fighting” with peers. In short, RTP demands that individuals maintain a self-regulated mode of fighting and is contingent on a give-and-take relationship to maintain enjoyment. RTP can thus foster empathy and prosocial behavior and has strong social bonding implications. However, such play can also escalate. A fitting setting to be considered as moderated RTP is MA because of its resemblance to RTP, and its inherent philosophical features, which emphasizes self-regulation, empathy, and prosocial behavior. This paper outlines what constitutes high-quality RTP in a MA context and how this relates to developmental outcomes. By doing so, we present a practitioner’s framework in which practitioners, social workers, and physical educators can explain how MA, and not merely contextual factors, contributes toward developmental outcomes. In a time where sport is becoming increasingly politicized and used as a social intervention, it too becomes imperative to account for why sport, and in this case, MA, is suitable to such ends.

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Background: Extreme dieting is a well-known phenomenon in combat sports, and still, little research has explored the link between extreme dieting and confidence levels among martial artists. Methods: In this cross-sectional study, extreme dieting and sport-specific self-confidence among 111 Swedish athletes practicing mixed martial arts (MMA) or Brazilian jiu-jitsu (BJJ) were examined. Athletes completed an online survey containing the Eating Disorder Examination questionnaire (EDE-Q) and the Trait Sport-Confidence inventory (TSCI). Results: The results showed that MMA athletes dieted in more extreme ways than BJJ athletes, primarily via restricted eating. They also had higher sport-specific self-confidence, which was positively correlated with weight loss. BJJ athletes used less restrictive eating than MMA athletes, but those who did diet in extreme ways experienced lower self-confidence compared to MMA athletes. Conclusions: The results are consistent with previous studies showing rapid weight loss in MMA athletes and suggest that some martial artists are at a particular risk of extreme dieting and possible sequelae. There is a link between self-confidence and weight loss, but it seems to allude to a comprehensive explanation and is in need of further research.