RESUMO
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.
RESUMO
BACKGROUND: No clear evidence is available in the literature regarding the acute effect of different styles of music on cardiac autonomic control. OBJECTIVES: The present study aimed to evaluate the acute effects of classical baroque and heavy metal musical auditory stimulation on Heart Rate Variability (HRV) in healthy men. PATIENTS AND METHODS: In this study, HRV was analyzed regarding time (SDNN, RMSSD, NN50, and pNN50) and frequency domain (LF, HF, and LF / HF) in 12 healthy men. HRV was recorded at seated rest for 10 minutes. Subsequently, the participants were exposed to classical baroque or heavy metal music for five minutes through an earphone at seated rest. After exposure to the first song, they remained at rest for five minutes and they were again exposed to classical baroque or heavy metal music. The music sequence was random for each individual. Standard statistical methods were used for calculation of means and standard deviations. Besides, ANOVA and Friedman test were used for parametric and non-parametric distributions, respectively. RESULTS: While listening to heavy metal music, SDNN was reduced compared to the baseline (P = 0.023). In addition, the LF index (ms(2) and nu) was reduced during exposure to both heavy metal and classical baroque musical auditory stimulation compared to the control condition (P = 0.010 and P = 0.048, respectively). However, the HF index (ms(2)) was reduced only during auditory stimulation with music heavy metal (P = 0.01). The LF/HF ratio on the other hand decreased during auditory stimulation with classical baroque music (P = 0.019). CONCLUSIONS: Acute auditory stimulation with the selected heavy metal musical auditory stimulation decreased the sympathetic and parasympathetic modulation on the heart, while exposure to a selected classical baroque music reduced sympathetic regulation on the heart.
RESUMO
We investigated the acute effects of musical auditory stimulation on cardiac autonomic responses to a mental task in 28 healthy men (18-22 years old). In the control protocol (no music), the volunteers remained at seated rest for 10 min and the test was applied for five minutes. After the end of test the subjects remained seated for five more minutes. In the music protocol, the volunteers remained at seated rest for 10 min, then were exposed to music for 10 min; the test was then applied over five minutes, and the subjects remained seated for five more minutes after the test. In the control and music protocols the time domain and frequency domain indices of heart rate variability remained unchanged before, during and after the test. We found that musical auditory stimulation with baroque music did not influence cardiac autonomic responses to the mental task.
Assuntos
Sistema Nervoso Autônomo/fisiologia , Frequência Cardíaca/fisiologia , Musicoterapia , Adolescente , Adulto , Humanos , Masculino , Conceitos Matemáticos , Análise e Desempenho de Tarefas , Adulto JovemRESUMO
BACKGROUND: Chronic classical music was reported to increase parasympathetic activitywhen evaluating heart rate variability (HRV). It is poor in the literature investigation of the acute effects of baroque and heavy metal styles of musical auditory stimulation on HRV. In this study we evaluated the acute effects of relaxant baroque and excitatory heavy metal music on the geometric indices of HRV in healthy men. METHOD: The study was performed in 12 healthy men between 18 and 30 years old. We excluded persons with previous experience with music instrument and those who had affinity with the song styles. We analyzed the following indices: RRtri, TINN and Poincaré plot (SD1, SD2 and SD1/SD2 ratio). HRV was recorded at rest for ten minutes. Subsequently they were exposed to relaxant baroque or excitatory heavy metal music for five minutes through an earphone. After the first music exposure they remained at rest for more five minutes and them they were exposed again to Baroque or Heavy Metal music (65-80 dB). The sequence of songs was randomized for each individual. RESULTS: The RRTri and SD2 indices were reduced during the heavy metal musical auditory stimulation (p < 0.05). No changes were observed regarding TINN, SD1 and SD1/SD2 ratio (p > 0.05).The qualitative Poincaré plot analysis indicated that during relaxant classical baroque music there was observed a higher beat-to-beat dispersion of RR intervals compared with no music exposure and during excitatory heavy metal musical auditory stimulation, showing higher HRV. CONCLUSION: We suggest that excitatory heavy metal music acutely decreases global HRV.
RESUMO
The aim of this study was to investigate acute cardiac response and heart rate variability (HRV) when listening to differing forms of music. Eleven healthy men aged between 18 and 25 years old were included in the study. HRV was recorded at rest for ten minutes with no music, then were asked to listen to classical baroque or heavy metal music for a period of 20 min. It was noted that heart rate variability did not affect HRV indices for time and frequency. In conclusion, music with different tempos does not influence cardiac autonomic regulation in men. However more studies are suggested to explore this topic in greater detail.
Assuntos
Frequência Cardíaca/fisiologia , Musicoterapia , Adolescente , Adulto , Humanos , Masculino , Música , Adulto JovemRESUMO
OBJECTIVES: The effects of chronic music auditory stimulation on the cardiovascular system have been investigated in the literature. However, data regarding the acute effects of different styles of music on cardiac autonomic regulation are lacking. The literature has indicated that auditory stimulation with white noise above 50 dB induces cardiac responses. We aimed to evaluate the acute effects of classical baroque and heavy metal music of different intensities on cardiac autonomic regulation. STUDY DESIGN: The study was performed in 16 healthy men aged 18-25 years. All procedures were performed in the same soundproof room. We analyzed heart rate variability (HRV) in time (standard deviation of normal-to-normal R-R intervals [SDNN], root-mean square of differences [RMSSD] and percentage of adjacent NN intervals with a difference of duration greater than 50 ms [pNN50]) 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 one of the two musical styles (classical baroque or heavy metal music) for five minutes through an earphone, followed by a five-minute period of rest, and then they were exposed to the other style for another five minutes. The subjects were exposed to three equivalent sound levels (60-70dB, 70-80dB and 80-90dB). The sequence of songs was randomized for each individual. RESULTS: Auditory stimulation with heavy metal music did not influence HRV indices in the time and frequency domains in the three equivalent sound level ranges. The same was observed with classical baroque musical auditory stimulation with the three equivalent sound level ranges. CONCLUSION: Musical auditory stimulation of different intensities did not influence cardiac autonomic regulation in men.
Assuntos
Estimulação Acústica , Sistema Nervoso Autônomo/fisiologia , Frequência Cardíaca/fisiologia , Música , Adolescente , Adulto , Frequência Cardíaca/efeitos da radiação , Humanos , Adulto JovemRESUMO
BACKGROUND: Chronic exposure to musical auditory stimulation has been reported to improve cardiac autonomic regulation. However, it is not clear if music acutely influences it in response to autonomic tests. We evaluated the acute effects of music on heart rate variability (HRV) responses to the postural change maneuver (PCM) in women. METHOD: We evaluated 12 healthy women between 18 and 28 years old and HRV was analyzed in the time (SDNN, RMSSD, NN50 and pNN50) and frequency (LF, HF and LF/HF ratio) domains. In the control protocol, the women remained at seated rest for 10 minutes and quickly stood up within three seconds and remained standing still for 15 minutes. In the music protocol, the women remained at seated rest for 10 minutes, were exposed to music for 10 minutes and quickly stood up within three seconds and remained standing still for 15 minutes. HRV was recorded at the following time: rest, music (music protocol) 0-5, 5-10 and 10-15 min during standing. RESULTS: In the control protocol the SDNN, RMSSD and pNN50 indexes were reduced at 10-15 minutes after the volunteers stood up, while the LF (nu) index was increased at the same moment compared to seated rest. In the protocol with music, the indexes were not different from control but the RMSSD, pNN50 and LF (nu) were different from the music period. CONCLUSION: Musical auditory stimulation attenuates the cardiac autonomic responses to the PCM.
RESUMO
OBJECTIVES: There are no data in the literature with regard to the acute effects of different styles of music on the geometric indices of heart rate variability. In this study, we evaluated the acute effects of relaxant baroque and excitatory heavy metal music on the geometric indices of heart rate variability in women. METHODS: We conducted this study in 21 healthy women ranging in age from 18 to 35 years. We excluded persons with previous experience with musical instruments and persons who had an affinity for the song styles. We evaluated two groups: Group 1 (nâ=â21), who were exposed to relaxant classical baroque musical and excitatory heavy metal auditory stimulation; and Group 2 (nâ=â19), who were exposed to both styles of music and white noise auditory stimulation. Using earphones, the volunteers were exposed to baroque or heavy metal music for five minutes. After the first music exposure to baroque or heavy metal music, they remained at rest for five minutes; subsequently, they were re-exposed to the opposite music (70-80 dB). A different group of women were exposed to the same music styles plus white noise auditory stimulation (90 dB). The sequence of the songs was randomized for each individual. We analyzed the following indices: triangular index, triangular interpolation of RR intervals and Poincaré plot (standard deviation of instantaneous beat-by-beat variability, standard deviation of the long-term RR interval, standard deviation of instantaneous beat-by-beat variability and standard deviation of the long-term RR interval ratio), low frequency, high frequency, low frequency/high frequency ratio, standard deviation of all the normal RR intervals, root-mean square of differences between the adjacent normal RR intervals and the percentage of adjacent RR intervals with a difference of duration greater than 50 ms. Heart rate variability was recorded at rest for 10 minutes. RESULTS: The triangular index and the standard deviation of the long-term RR interval indices were reduced during exposure to both music styles in the first group and tended to decrease in the second group whereas the white noise exposure decreased the high frequency index. We observed no changes regarding the triangular interpolation of RR intervals, standard deviation of instantaneous beat-by-beat variability and standard deviation of instantaneous beat-by-beat variability/standard deviation in the long-term RR interval ratio. CONCLUSION: We suggest that relaxant baroque and excitatory heavy metal music slightly decrease global heart rate variability because of the equivalent sound level.
Assuntos
Estimulação Acústica/métodos , Sistema Nervoso Autônomo/fisiologia , Frequência Cardíaca/fisiologia , Música , Adolescente , Adulto , Análise de Variância , Índice de Massa Corporal , Feminino , Humanos , Musicoterapia , Valores de Referência , Estatísticas não Paramétricas , Fatores de Tempo , Adulto JovemRESUMO
OBJECTIVES: There are no data in the literature with regard to the acute effects of different styles of music on the geometric indices of heart rate variability. In this study, we evaluated the acute effects of relaxant baroque and excitatory heavy metal music on the geometric indices of heart rate variability in women. METHODS: We conducted this study in 21 healthy women ranging in age from 18 to 35 years. We excluded persons with previous experience with musical instruments and persons who had an affinity for the song styles. We evaluated two groups: Group 1 (n = 21), who were exposed to relaxant classical baroque musical and excitatory heavy metal auditory stimulation; and Group 2 (n = 19), who were exposed to both styles of music and white noise auditory stimulation. Using earphones, the volunteers were exposed to baroque or heavy metal music for five minutes. After the first music exposure to baroque or heavy metal music, they remained at rest for five minutes; subsequently, they were re-exposed to the opposite music (70-80 dB). A different group of women were exposed to the same music styles plus white noise auditory stimulation (90 dB). The sequence of the songs was randomized for each individual. We analyzed the following indices: triangular index, triangular interpolation of RR intervals and Poincaré plot (standard deviation of instantaneous beat-by-beat variability, standard deviation of the long-term RR interval, standard deviation of instantaneous beat-by-beat variability and standard deviation of the long-term RR interval ratio), low frequency, high frequency, low frequency/high frequency ratio, standard deviation of all the normal RR intervals, root-mean square of differences between the adjacent normal RR intervals and the percentage of adjacent RR intervals with a difference of duration greater than 50 ms. Heart rate variability was recorded at rest for 10 minutes. ...
Assuntos
Adolescente , Adulto , Feminino , Humanos , Adulto Jovem , Estimulação Acústica/métodos , Sistema Nervoso Autônomo/fisiologia , Frequência Cardíaca/fisiologia , Música , Análise de Variância , Índice de Massa Corporal , Musicoterapia , Valores de Referência , Estatísticas não Paramétricas , Fatores de TempoRESUMO
The literature investigated the effects of chronic baroque music auditory stimulation on the cardiovascular system. However, it lacks in the literature the acute effects of different styles of music on cardiac autonomic regulation. To evaluate the acute effects of baroque and heavy metal music on heart rate variability (HRV) in women. The study was performed in 21 healthy women between 18 and 30 years old. We excluded persons with previous experience with music instrument and those who had affinity with the song styles. All procedures were performed in the same sound-proof room. We analyzed HRV in the time (standard deviation of normal-to-normal respiratory rate (RR) intervals, root-mean square of differences between adjacent normal RR intervals in a time interval, and the percentage of adjacent RR intervals with a difference of duration greater than 50 ms) and frequency (low frequency [LF], high frequency [HF], and LF/HF ratio) domains. HRV was recorded at rest for 10 min. Subsequently they were exposed to baroque or heavy metal music for 5 min through an earphone. After the first music exposure they remained at rest for more 5 min and them they were exposed again to baroque or heavy metal music. The sequence of songs was randomized for each individual. The power analysis provided a minimal number of 18 subjects. Shapiro-Wilk to verify normality of data and analysis of variance for repeated measures followed by the Bonferroni test for parametric variables and Friedman's followed by the Dunn's post-test for non-parametric distributions. During the analysis of the time-domain indices were not changed. In the frequency-domain analysis, the LF in absolute units was reduced during the heavy metal music stimulation compared to control. Acute exposure to heavy metal music affected the sympathetic activity in healthy women.
Assuntos
Estimulação Acústica/classificação , Sistema Nervoso Autônomo/fisiologia , Frequência Cardíaca/fisiologia , Música , Adolescente , Adulto , Análise de Variância , Feminino , Humanos , Fatores de Tempo , Adulto JovemRESUMO
A literatura já demonstrou que a estimulação auditiva por meio de música influencia o sistema cardiovascular. Neste estudo, foi realizada uma revisão da literatura, a fim de investigar a relação entre os mecanismos auditivos e a regulação autonômica cardíaca. Os estudos selecionados indicaram forte correlação entre a intensidade do ruído e o equilíbrio simpatovagal. Além disso, foi relatado que a terapia com música melhorou a variabilidade da frequência cardíaca em pacientes com câncer de mama tratados com antraciclinas. Postula-se que a dopamina liberada no sistema estriatal, induzida por canções alegres, está envolvida na regulação autonômica. Estudos posteriores sãonecessários para adicionar novos elementos na literatura, para melhorar a novas terapias e para o tratar doenças cardiovasculares.(AU)
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Humanos , Masculino , Feminino , Estimulação Acústica , Musicoterapia , Sistema Nervoso Autônomo , Sistema Cardiovascular , Doenças do Sistema Nervoso AutônomoRESUMO
The literature has already demonstrated that auditory stimulation with music influences the cardiovascular system. In this study, we performed a literature review in order to investigate the relationship between auditory mechanisms and cardiac autonomic regulation. The selected studies indicated that there is a strong correlation between noise intensity and vagal-sympathetic balance. Also, it was reported that music therapy improved heart rate variability in anthracycline-treated breast cancer patients. It was hypothesized that dopamine release in the striatal system induced by pleasure songs are involved in the cardiac autonomic regulation. Further studies are necessary to add new elements in the literature to improve new therapies to treat cardiovascular disorders.(AU)
A literatura já demonstrou que a estimulação auditiva por meio de música influencia o sistema cardiovascular. Neste estudo, foi realizada uma revisão da literatura, a fim de investigar a relação entre os mecanismos auditivos e a regulação autonômica cardíaca. Os estudos selecionados indicaram forte correlação entre a intensidade do ruído e o equilíbrio simpatovagal. Além disso, foi relatado que a terapia com música melhorou a variabilidade da frequência cardíaca em pacientes com câncer de mama tratados com antraciclinas. Postula-se que a dopamina liberada no sistema estriatal, induzida por canções alegres, está envolvida na regulação autonômica. Estudos posteriores são necessários para adicionar novos elementos na literatura, para melhorar a novas terapias e para o tratar doenças cardiovasculares.(AU)
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Estimulação Acústica/psicologia , Musicoterapia , Doença das Coronárias/terapia , Frequência Cardíaca , RevisãoRESUMO
A literatura já demonstrou que a estimulação auditiva por meio de música influencia o sistema cardiovascular. Neste estudo, foi realizada uma revisão da literatura, a fim de investigar a relação entre os mecanismos auditivos e a regulação autonômica cardíaca. Os estudos selecionados indicaram forte correlação entre a intensidade do ruído e o equilíbrio simpatovagal. Além disso, foi relatado que a terapia com música melhorou a variabilidade da frequência cardíaca em pacientes com câncer de mama tratados com antraciclinas. Postula-se que a dopamina liberada no sistema estriatal, induzida por canções alegres, está envolvida na regulação autonômica. Estudos posteriores sãonecessários para adicionar novos elementos na literatura, para melhorar a novas terapias e para o tratar doenças cardiovasculares.
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Masculino , Feminino , Humanos , Estimulação Acústica , Sistema Nervoso Autônomo , Sistema Cardiovascular , Doenças do Sistema Nervoso Autônomo/terapia , MusicoterapiaRESUMO
Previous studies have already demonstrated that auditory stimulation with music influences the cardiovascular system. In this study, we described the relationship between musical auditory stimulation and heart rate variability. Searches were performed with the Medline, SciELO, Lilacs and Cochrane databases using the following keywords: "auditory stimulation", "autonomic nervous system", "music" and "heart rate variability". The selected studies indicated that there is a strong correlation between noise intensity and vagal-sympathetic balance. Additionally, it was reported that music therapy improved heart rate variability in anthracycline-treated breast cancer patients. It was hypothesized that dopamine release in the striatal system induced by pleasurable songs is involved in cardiac autonomic regulation. Musical auditory stimulation influences heart rate variability through a neural mechanism that is not well understood. Further studies are necessary to develop new therapies to treat cardiovascular disorders.
Assuntos
Estimulação Acústica/psicologia , Sistema Nervoso Autônomo/fisiologia , Frequência Cardíaca/fisiologia , Humanos , MusicoterapiaRESUMO
Previous studies have already demonstrated that auditory stimulation with music influences the cardiovascular system. In this study, we described the relationship between musical auditory stimulation and heart rate variability. Searches were performed with the Medline, SciELO, Lilacs and Cochrane databases using the following keywords: "auditory stimulation", "autonomic nervous system", "music" and "heart rate variability". The selected studies indicated that there is a strong correlation between noise intensity and vagal-sympathetic balance. Additionally, it was reported that music therapy improved heart rate variability in anthracycline-treated breast cancer patients. It was hypothesized that dopamine release in the striatal system induced by pleasurable songs is involved in cardiac autonomic regulation. Musical auditory stimulation influences heart rate variability through a neural mechanism that is not well understood. Further studies are necessary to develop new therapies to treat cardiovascular disorders.
Assuntos
Humanos , Estimulação Acústica/psicologia , Sistema Nervoso Autônomo/fisiologia , Frequência Cardíaca/fisiologia , MusicoterapiaRESUMO
O exame de 100 crânios humanos secos revelou que em 61 por cento dos casos o forame jugular é maior no lado direito; em 26 por cento, no esquerdo; e em 13 por cento é simétrico na forma e dimensöes. O forame jugular é dividido por um septo ósseo em dois compartimentos (em 5 por cento dos casos bilateralmente); em 7 por cento, somente no lado direito; e, em 3 por cento dos casos, apenas no lado esquerdo. A formaçäo de um terceiro forame para o seio petroso ocorre por outra septaçäo do forame jugular devido a uma ponte óssea presente em 6 por cento dos casos a direita e em 5 por cento à esquerda. A fossa jugular é bem formada em ambos os lados em 86 por cento dos casos; ocorre apenas unilateralmente à direita em 10 por cento; e unilateralmente à esquerda em 4 por cento dos casos