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do Amaral JA, Guida HL, de Abreu LC, et al. Effects of auditory stimulation with music of different intensities on heart period. J Tradit Complement Med. 2015;6(1):23-8doi: 10.1016/j.jtcme.2014.11.032.
do Amaral, J. A., Guida, H. L., de Abreu, L. C., Barnabé, V., Vanderlei, F. M., & Valenti, V. E. (2016). Effects of auditory stimulation with music of different intensities on heart period. Journal of traditional and complementary medicine, 6(1), 23-8. https://doi.org/10.1016/j.jtcme.2014.11.032
do Amaral, Joice A T, et al. "Effects of auditory stimulation with music of different intensities on heart period." Journal of traditional and complementary medicine vol. 6,1 (2016): 23-8. doi: https://doi.org/10.1016/j.jtcme.2014.11.032
do Amaral JA, Guida HL, de Abreu LC, Barnabé V, Vanderlei FM, Valenti VE. Effects of auditory stimulation with music of different intensities on heart period. J Tradit Complement Med. 2015 Jan 07;6(1):23-8. doi: 10.1016/j.jtcme.2014.11.032. eCollection 2016 Jan. PMID: 26870675; PMCID: PMC4738034.
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J Tradit Complement Med. 2015 Jan 07;6(1):23-8. doi: 10.1016/j.jtcme.2014.11.032. eCollection 2016 Jan.

Effects of auditory stimulation with music of different intensities on heart period.

Journal of traditional and complementary medicine

Joice A T do Amaral, Heraldo L Guida, Luiz Carlos de Abreu, Viviani Barnabé, Franciele M Vanderlei, Vitor E Valenti

Affiliations

  1. Faculdade de Filosofia e Ciências, Universidade Estadual Paulista, Marília, São Paulo, Brazil.
  2. Faculdade de Medicina do ABC, Santo André, São Paulo, Brazil.
  3. Harvard Medical School of Public Health, Boston, MA, USA.
  4. Faculdade de Ciências e Tecnologia, Universidade Estadual Paulista, Presidente Prudente, São Paulo, Brazil.

PMID: 26870675 PMCID: PMC4738034 DOI: 10.1016/j.jtcme.2014.11.032

Abstract

Various studies have indicated that music therapy with relaxant music improves cardiac function of patients treated with cardiotoxic medication and heavy-metal music acutely reduces heart rate variability (HRV). There is also evidence that white noise auditory stimulation above 50 dB causes cardiac autonomic responses. In this study, we aimed to evaluate the acute effects of musical auditory stimulation with different intensities on cardiac autonomic regulation. This study was performed on 24 healthy women between 18 and 25 years of age. We analyzed HRV in the time [standard deviation of normal-to-normal RR intervals (SDNN), percentage of adjacent RR intervals with a difference of duration >50 ms (pNN50), and root-mean square of differences between adjacent normal RR intervals in a time interval (RMSSD)] and frequency [low frequency (LF), high frequency (HF), and LF/HF ratio] domains. HRV was recorded at rest for 10 minutes. Subsequently, the volunteers were exposed to baroque or heavy-metal music for 5 minutes through an earphone. The volunteers were exposed to three equivalent sound levels (60-70, 70-80, and 80-90 dB). After the first baroque or heavy-metal music, they remained at rest for 5 minutes and then they were exposed to the other music. The sequence of songs was randomized for each individual. Heavy-metal musical auditory stimulation at 80-90 dB reduced the SDNN index compared with control (44.39 ± 14.40 ms vs. 34.88 ± 8.69 ms), and stimulation at 60-70 dB decreased the LF (ms(2)) index compared with control (668.83 ± 648.74 ms(2) vs. 392.5 ± 179.94 ms(2)). Baroque music at 60-70 dB reduced the LF (ms(2)) index (587.75 ± 318.44 ms(2) vs. 376.21 ± 178.85 ms(2)). In conclusion, heavy-metal and baroque musical auditory stimulation at lower intensities acutely reduced global modulation of the heart and only heavy-metal music reduced HRV at higher intensities.

Keywords: auditory stimulation; autonomic nervous system; cardiovascular system; heart rate variability; music

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