不同音色低频声波对健康人委中微循环及经皮氧分压的影响

目的观察频率相同的情况下不同音色的低频声波对健康人委中微循环及经皮氧分压的影响,探讨体感音乐疗法的作用机理。方法在30例健康人的委中附近,播放频率相同（98.00 Hz）、音色不同（分别模拟古琴、箫、埙、钟、鼓的音色）的低频声波,各音色分别播放至60、120、180、240、300 s时,以激光多普勒血流仪分析委中微循环及经皮氧分压的变化。结果钟、鼓、箫的音色声波使委中微循环量、经皮氧分压逐渐升高,且鼓〉钟〉箫;埙、古琴的音色声波使委中微循环量、经皮氧分压逐渐降低,且埙递减大于古琴。同一时点组间比较,鼓音色组高于其他组（P〈0.01）。结论不同音色的低频声波五行属性不同,频谱成分不同,可对穴位产生不同影响。

Effects of Low Frequency Sound Waves of Different Timbres on Weizhong Microcirculation and Transcutaneous Oxygen Partial Pressure of Healthy People

Objective To discuss different effects of low frequency sound waves of different timbres on microcirculation and transcutaneous oxygen partial pressure of Weizhong （BL40） of healthy people;To study the mechanism of somatosensory music therapy. Methods The same frequency （98.00 Hz）, different timbres （sounds of guqin, flute, ocarina, bell, and drum were simulated） low frequency sound waves were played near Weizhong acupoint of 30 healthy persons. Laser Doppler flowmetry was used to analyze microcirculation and the changes of transcutaneous oxygen pressure of meridian acupoints, when each timbre was played for 60, 120, 180, 240 and 300 s. Results Sound waves of bell, drum, and flute made point microcirculation and transcutaneous oxygen pressure gradually increase, and the influence of drum〉bell〉flute;timbre waves of ocarina and guqin made the point microcirculation and transcutaneous oxygen pressure decrease gradually decrease, and the decrease of ocarina was more significant than that of guqin. In the same time point, sound waves of bell made point microcirculation and transcutaneous oxygen pressure increase more than the other sound waves （P〈0.01）. Conclusion Low frequency sounds of different timbres belong to different properties of five elements. They have different components in frequency spectrum, and can create different effects on acupoints.