This study aimed to evaluate the effects of psychological support utilizing mindful breathing on emotional load and task execution in college students using pulse waves. The subjects (20 students) were randomly divided into two groups (10 students each in the mindfulness and nonmindfulness groups). The number of answers and number of correct answers on a mental arithmetic task were compared between the mindfulness group and non-mindfulness group on day 1, day 5, and day 10. We also analyzed the results of fingertip plethysmography during the experiment. There was a significant difference between the number of answers and number of correct answers on the mental arithmetic task. The results for pulse wavelength suggested that mindful breathing was effective in suppressing sympathetic nerves. With regard to autonomic nervous system activity, the sympathetic nervous system was dominant before mindfulness practice and the sympathetic nervous system was suppressed after mindfulness practice. These results suggest that mindfulness may be useful for task execution and relaxation.
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