The article identifies the causes of injuries and developed methodical techniques for their prevention in arm wrestling. During the study, the protocols of 92 (n = 92) arm wrestling competitions of various levels, from club to international, were analyzed, and 156 (n = 156) competitive movements of athletes were analyzed when performing arm wrestling techniques. In the course of the study, the protocols of 92 (n = 92) different level armwrestling competitions, from the club to the international competition were analyzed, 156 (n = 156) competitive movements were analyzed for athletes when armwrestling performing techniques. The data obtained indicate that, along with the increasing number of competitions, the number of injuries gradually and significantly decreases. So, at the first stage, during 24 competitions, athletes received 50 injuries, which on average annually amounted to 6.250±0.701 cases; at the second stage, during 28 competitions, 15 injuries were received (1.875±0.441 cases annually); at the third stage, out of 40 competitions, there were only 4 injuries (0.500±0.267 cases annually). A clear and reliable dynamics in the reduction of injuries (P < 0.01–0.001) indicates that the development and spread of armwrestling has a positive impact on the professional development of coaches, referees and athletes. Significant dynamics of injury reduction indicates that preventive measures to prevent the causes of injury have a positive impact on the training of coaches, referees and athletes. The annual seminars with the involvement of qualified athletes made it possible to significantly improve the technique of performing competitive exercises, improve the means of preventing injuries, and increase the qualification level of judges. In addition, in recent years, the material and technical base for training athletes has been improved, the Rules for holding competitions have been adjusted, as well as the methodology for strength training of armwrestlers of various qualifications.