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  • Article Education Environmental Sciences Psychology

    Effect of positive and negative ions in esports performance and arousal levels

    Goichi Hagiwara
    Takehiro Iwatsuki
    Hirokazu Funamori
    Masaru Matsumoto
    Yukihiro Kubo
    Seiji Takami
    Hiroaki Okano
    Daisuke Akiyama

    The purpose of this study was to investigate the psychological effects of arousal levels in esports players during a racing-game under positive and negative ion environments. Participants (10 male) who belonged to the collegiate esports team were recruited. The influences of positive and negative ions were evaluated in a randomized, crossover, and placebo-controlled double-blind design. Each participant completed two experiments within a 4-week interval. Two experimental environments were used: positive and negative ions filled up the atmosphere (PNI), and a control (CON) condition. For the performance task, a car-racing game was adopted. Arousal state was measured by the Two-Dimensional Mood Scale (TDMS) and an electroencephalogram (EEG). Results indicated that the EEG level was significantly higher in PNI than CON condition. Also, the PNI had a significantly higher performance on the gaming task than the CON condition. The present study demonstrated the beneficial effects of positive and negative ion environments on esports players.

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