Abstract
The term ”esports” refers to all sporting competitions played with electronic devices, and highly skilled esports players are known to possess superior physical characteristics. In this study, we focused on the activity of the forearm and hand intrinsic muscles during esports as an index that reflects the superior physical characteristics of esports experts. The analysis method of examining the mean power frequency of muscle activity is widely used in the field of sports science as a method of quantitatively evaluating muscle activity. In this study, we aimed to investigate the correlation between the mean power frequency of forearm and hand intrinsic muscles and performance level during esports in order to examine some of the superior physical characteristics of skilled esports players. 10 adult male subjects (age: 24.7 ± 2.7 years, experience: 10.6 ± 7.6 years, mean ± standard deviation) with esports experience were included in the study. Participants performed 5 different tasks created using AimLab. The activity of the radial carpal flexor, extensor carpi radialis, first dorsal interosseous muscle, and short thumb abductor muscles during the tasks was measured by surface electromyography. Correlation analysis showed that the lower the mean power frequency of activity of the extensor carpi radialis muscle, the higher the success rate and the faster the reaction time during the task (p<0.05). These results indicate that forearm extensor muscle activity may contribute to quick and accurate movement control during esports.
https://ror.org/057zh3y96 
