Acute effects of vibration on peripheral blood flow in healthy subjects
Acute effects of vibration on peripheral blood flow in healthy subjects
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DOI：
10.1136/oem.53.10.663
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发表时间：
1996-10-01
影响因子：
4.9
通讯作者：
Allen, JA
中科院分区：
文献类型：
--
作者：
Egan, CE;Espie, BH;Allen, JA
目的-主要目的是研究与许多工业手持工具产生的复杂振动频谱相似的正常健康受试者手部的急性血管效应。反复发作的振动和振动强度的变化的影响也studied. Methods-血流量测量静脉闭塞体积描记与应变计。通过气动凿产生频率范围为0.4至> 4000 Hz的振动，并施加于右手。在两分钟的振动之前、期间和之后，测量两个中指、两个大脚趾或两个前臂的血流量。结果振动与双侧手指和脚趾血流量显著减少（P < 0.01和P < 0.03）和心率显著增加（P < 0.05）有关，但对前臂血流量没有影响。手指的反应并没有被重复的振动消除，但最初在振动的第一分钟最显着。增加振动的强度延迟recovery.Conclusions-Hand振动引起的心脏和四肢交感神经张力的普遍增加。这可能是手持式工业振动工具习惯使用者发生血管痉挛疾病的一个因素。
Objectives-The main objective was to study the acute vascular effects in the hands of normal healthy subjects of a complex vibration spectrum similar to that generated by many industrial hand held tools. The effects of repeated bouts of vibrations and alterations in the intensity of vibration were also studied.Methods-Blood flow was measured by venous occlusion plethysmography with strain gauges. Vibration across a frequency range of 0.4 to > 4000 Hz was generated by a pneumatic chisel and applied to the right hand. Blood flow was measured in both middle fingers, both big toes, or both forearms before, during, and after a two minute period of vibration. Systolic pressure of a finger and heart rate were also measured.Results-Vibration was associated with a significant bilateral reduction in finger and toe blood flow (P < 0.01 and P < 0.03) and a significant increase in heart rate (P < 0.05) but had no effect on forearm blood flow. The finger response was not abolished by repeated bouts of the vibration but was initially most notable during the first minute of vibration. Increasing the intensity of vibration delayed recovery.Conclusions-Hand vibration causes a generalised increase in sympathetic tone in the heart and extremities. This may be a factor in the development of vasospastic disease in habitual users of hand held industrial vibrating tools.