Resposta aguda do sistema nervoso autônomo a diferentes estímulos auditivos musicais em mulheres

Abstract

Objective. To compare the acute response of the autonomic nervous system (ANS) before exposure to auditory stimuli of different musi­cal styles in women. Method. Cross-sectional study with 27 women aged between 18 and 30 years old, apparently healthy. Volunteers remained at rest for 10 minutes and were exposed to classical music (64-84 dB) and heavy metal (75-84 dB) for 10 minutes, via headset, and their heart rate variability (HRV) was recorded during the entire period. Statistical indices were analyzed in the time domain and in­dexes in the frequency domain: low frequency component (LF), high frequency (HF) and LF / HF ratio of HRV. Results. There was an increase in the LF index (p=0.04) and decrease in HF index (p=0.02) in comparing stimuli of heavy metal and classical music. There was also a difference in LF/HF ratio (p=0.007) when comparing classical and heavy metal music. Conclusion. The acute response to exposure of the SNA musical auditory stimuli through headphones attended incremental component of the sympathetic, parasympathetic with­drawal and increased sympathetic-vagal balance component in heavy metal style compared to classical music.