da Silva Sheila Ap F, Guida Heraldo L, Dos SantosAntônio Ana M, Vanderlei Luiz Carlos M, Ferreira Lucas L, de Abreu Luiz Carlos, Sousa Fernando H, Valenti Vitor E
Centro de Estudos do Sistema Nervoso Autônomo (CESNA), Departamento de Fonoaudiologia, Faculdade de Filosofia e Ciências, Universidade Estadual Paulista, UNESP, Av. Hygino Muzzi Filho, 737, 17525-900 Marília, SP, Brasil.
Programa de Pós-Graduação em Fisioterapia, Faculdade de Ciências e Tecnologia, Universidade Estadual Paulista (UNESP), Rua Roberto Simonsen, 305, 19060-900 Presidente Prudente, SP, Brasil.
Int Arch Med. 2014 May 22;7:27. doi: 10.1186/1755-7682-7-27. eCollection 2014.
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.
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.
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.
We suggest that excitatory heavy metal music acutely decreases global HRV.
据报道，在评估心率变异性（HRV）时，长期聆听古典音乐会增加副交感神经活动。关于巴洛克风格和重金属风格的音乐听觉刺激对HRV的急性影响，文献研究较少。在本研究中，我们评估了舒缓的巴洛克音乐和激昂的重金属音乐对健康男性HRV几何指数的急性影响。
该研究对12名年龄在18至30岁之间的健康男性进行。我们排除了有乐器演奏经验以及对这些歌曲风格有偏好的人。我们分析了以下指标：RR间期三角指数（RRtri）、三角插值法得到的标准差（TINN）和庞加莱图（SD1、SD2和SD1/SD2比值）。在静息状态下记录HRV十分钟。随后，通过耳机让他们聆听舒缓的巴洛克音乐或激昂的重金属音乐五分钟。第一次音乐聆听后让他们再静息五分钟，然后再次让他们聆听巴洛克或重金属音乐（65 - 80分贝）。每个个体的歌曲顺序是随机安排的。
在重金属音乐听觉刺激期间，RRtri和SD2指标降低（p < 0.05）。未观察到TINN、SD1和SD1/SD2比值有变化（p > 0.05）。定性的庞加莱图分析表明，在聆听舒缓的古典巴洛克音乐期间，与未聆听音乐时相比，RR间期逐搏离散度更高，而在激昂的重金属音乐听觉刺激期间，HRV更高。
我们认为，激昂的重金属音乐可急性降低整体HRV。
