Exploratory systematic review of Mixed Martial Arts: an overview of performance of importance factors with over 20,000 athletes.

Review question / Objective: The objective of the present study was to analyze the findings of the scientific literature related to MMA through an exploratory systematic review on the subject and to present the state of the art of the sport from a multifactorial perspective. Condition being studied: Mixed Martial Arts (MMA) is a full contact combat sport characterized by its high degree of freedom in offensive and defensive approaches resulting in the inclusion of techniques and tactics from multiple combat sport styles. MMA has gained legitimacy and uniformity of rule sets after a tumultuous and unregulated introduction in North America as well as it is one of the fastest growing sports in the world. However, to the best of our knowledge, there are still no methodical, comprehensive, transparent, and replicable studies that have summarized the overall perspective of MMA athletes, resulting in an integrated analysis for a better scientific understanding and more efficient practical applications.