The impact of in-game moments on the physiological state of esports players

Aim. This study aimed to investigate the dynamics of electrocardiogram (ECG) parameters and heart rate variability (HRV) among esports players (Dota 2). Materials and methods. Continuous ECG recordings were obtained from 15 esports players. HRV was derived from the ECG data to assess self-regulation in game settings. Results. The cardiovascular response of esports athletes was significantly influenced by match outcomes. All athletes exhibited pre-match tachycardia followed by heart rate acceleration during the most challenging in-game moments (146.8 ± 13.1 bpm). Victory elicited a more pronounced heart rate response than defeat. The observed tachycardia was associated with time domain changes without affecting peak amplitude. Specifically, match loss triggered a sharp increase in the duration of the P wave, T complex, QRS interval, and in some cases, the QT interval, suggesting a deceleration of cardiac electrical conduction. Conclusion. The findings demonstrate that in-game moments significantly affect heart activity and may lead to the development of pathological cardiac conditions.