Martial Arts and Combat Sports (MA&CS) are the subject of a dispute. On the one hand, they have been considered an ideal means to acquire emotional self-control. On the other hand, they have been considered aggressive practices which may promote violent behaviors. The current systematic review aims to analyze the evidence of the effects of MA&CS participation in anger and aggression, and the quality of this evidence. The review was conducted according to the PRISMA-P protocol. The studied variables were study type and aims, sample, interventions and procedures, measurements and outcomes. Nine studies (three cohort studies and six randomized controlled trials) were selected for inclusion. The following results should be viewed with much caution, as the volume of studies and the methodological quality of most of them is not optimal. Training in traditional martial arts seems to be an effective means to lower levels of anger and aggression. Regarding the age of subjects, there is a predisposition to reduce anger in the adult population. In addition, young subjects with violent or behavioral problems show a positive response to working with martial arts. However, the available evidence, overall, shows no relationship between MA&CS practice and anger and aggression levels.

武术和搏击运动（MA＆CS）是争端的主题。一方面，它们被认为是获得情绪自我控制的理想手段。另一方面，它们被认为是可能助长暴力行为的侵略性行为。当前的系统评价旨在分析MA＆CS参与愤怒和侵略的效果的证据，以及该证据的质量。审查是根据PRISMA-P协议进行的。研究的变量是研究类型和目标，样本，干预措施和程序，度量和结果。选择九项研究（三项队列研究和六项随机对照试验）。由于研究量和大多数方法学质量都不理想，因此应谨慎对待以下结果。传统武术训练似乎是降低愤怒和侵略程度的有效手段。关于受试者的年龄，有减少成年人口中的愤怒的倾向。此外，有暴力或行为问题的年轻受试者对打武术表现出积极的反应。但是，总体而言，现有证据表明，MA＆CS练习与愤怒和攻击程度之间没有关系。