Inderscience Publishers

Effect of negative air ions on physiological and perceived psychological stress during computer operation

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In the present study, we examined the effect of Negative Air Ions (NAI) exposure on physiological and psychological indicators of stress during a two-hour long computer operation. The level of variety of stresses during computer tasks in three conditions, i.e. 'control condition, control condition-placebo effect and experimental condition – air ion generator on (therapeutic conditions)', through pre and post-testing were compared. Heart beat was significantly different in third (therapeutic) condition (F = 6.0, p < 0.01). Moreover, only in therapeutic setting significant changes in heart beat (t = 2.9, p < 0.01) were observed in pre (77.4 bpm) and post-testing (72.1 bpm). Computer-oriented stress and psychological stresses were also significantly reduced in therapeutic condition (F = 3.6, p = Keywords: computer-oriented stress, NAI, negative air ions, physiological stress, psychological stress, stress indicators, heart rate, computer use, computer work, computer operations

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