music.Overall, we found that participants experienced objective and subjective stress reduction after listening to 528 Hz music, while this effect could not be confirmed for 440 Hz music. In this study, participants listened to music only for five minutes in each condition. In most previous studies, participants have listened to music for 10 minutes or longer. Therefore, it might be the case that listening to 440 Hz music for longer would evoke the stress-reducing effect, especially as indexed by chromogranin A and the POMS 2, as in previous studies. However, the point remains that even if the exposure to music lasts only five minutes, listening to 528 Hz music reduces stress to the endocrine system and the autonomic nervous system. Although the sample size of this study was limited, these are interesting data and could provide support for a new approach in music therapy.
— 読み進める www.scirp.org/html/2-8204397_87146.htm