It's possible you don't admit to it, but you probably like watching fights. According to the law and social rules, fighting is not necessary. They are suppressed, however, by social and familial inhibitions. This is a vital aspect of survival, and it helps to preserve species by ensuring that they reproduce. All of these behaviors are crucial in combat - it's the ultimate test for dominance. Research shows that testosterone is a key factor in determining these traits. Previous studies have reported such differences not only in wrestlers and other athletes, but also in chess players—"even in games of chance such as those that involve a coin toss," the researchers note. However, the change in epinephrine level was significantly related to the change in testosterone for winners but not losers. Levels of testosterone and other hormones were compared for match winners versus losers. The findings are consistent with studies linking testosterone changes to aggressive and competitive behavior in male animals—and may even suggest ways of enhancing a wrestler's "social dominance" to facilitate future success. Higher T-levels are more aggressive, stronger and have better control. In addition, the different variables studied, such as nature of the competition, age, gender, and time of day, in all the studies reviewed allowed this review to provide some basic data that will allow future studies to build on and improve the knowledge in this specific field. In conclusion, these findings may help to explain the already evident connection between psychological state and the activation of the endocrine systems, in which the psychological skills are the mediator variable of win-loss in competition. A previous study also reported that C is not strictly linked to an agonistic activity but is affected by the cognitive and emotional perception of the event . For instance, Parmigiani et al. suggest that in a symmetric type of contest the karatekas with more anxious and defensive personality traits have higher probability of losing the competition. However, it has been shown that the endocrine responses to the competitive setting varied significantly by gender . Specifically, it has been shown that after the early twenties, resting T levels begin to decline slowly . Testosterone helps maintain bone density, which reduces the risk of stress fractures and joint issues over time. On the other hand, Low T (low testosterone) can lead to decreased muscle mass, slower recovery times, and plateaued strength gains. In athletic contexts, testosterone becomes especially important because it affects how efficiently the body builds muscle, repairs tissue, and maintains energy. Performance in competitions and demanding work activities indicates that the concomitant measurement of hormonal and psychological parameters offers a unique possibility to achieve a more comprehensive evaluation of the stress responses of the practitioners 18,25. The type of combat sports practised, participants’ gender, and the nature of competition contests (i.e., official vs simulation) did not moderate the relationship between competition and hormonal response. The aims of this systematic review and meta-analysis were to discuss the hormonal responses related to striking combat sports competitions and to investigate the moderator and mediator variables of the hormonal response-competition/outcome relationship. Considering the above-mentioned aspects, the aim of this study was to assess the changes of the hypothalamic-pituitary-adrenal axis hormone levels following performance in selected combat sports. A study in the American Psychological Association showed that testosterone levels increased after a fight for 15 wrestlers. A study on judo club members found that testosterone levels increased significantly after competitive fights . Thus, some psychological variables, such as fighting motivation, mental toughness, competition anxiety, self-efficacy and self-confidence, represented a cause-and-effect (mediator variables) relationship between hormonal response and outcome of the competition and the predictor variables of performance in the competition. A combination of "biological" and "psychological" measures can be used to characterize the athlete in terms of attitude and performance. The time of day at which the C and T were measured was found to be an insignificant moderator in the relationship between hormone change and competition. In addition, plasma growth hormone (GH), C, glucose, and lactate concentrations were significantly elevated following non-combat kickboxing (NCKB) sessions, which consisted of 10 min of very light warm-up followed by seven sets of six techniques, 20 s per technique as fast as possible, with 1 min of rest between sets . Indeed, further studies into the dissociation between gender and the mechanisms determining gender differences in competitive settings are strongly recommended. As mentioned, the human literature shows contradictory findings regarding the link between competitions, their outcome and hormonal variations (especially in relation to T) while also showing a high degree of methodological heterogeneity 9,40-42. The T response appeared to depend on the nature of the competition contest (particularly whether a real bout is involved), individual character and the participant’s evaluation of the likelihood of winning or losing the bout. Furthermore, in simulated combat Moreira et al. revealed that kickboxing bouts may significantly increase sC concentrations. During an official kickboxing contest, Ouergui et al. reported a significant increase in C, T and HGH after full-contact kickboxing bouts. Kickboxing is a high-intensity intermittent striking combat sport that requires complex skills and tactical excellence for success where athletes are classified by gender, weight, and age 6,7.
