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振动对人体的不良影响,与体力劳动强度、传至组织和器官的机械振动的大小,以及使神经-体液失调等方面有关。伴有振动的噪声,能加强对听力的损伤,对人体听觉以外的健康情况也有所影响。在人体肌肉和脑中大量存在肌酸激酶(CK),故研究接触噪声和振动后,CK是否从组织释放入血液。实验设三组,另设对照组。第一组,由20例工人组成,接触噪声和振动超过容许标准(噪声级为90～108 dB(A),125赫频带超过容许振动速度标准达10 dB,且
The adverse effects of vibration on the human body are related to the intensity of manual labor, the amount of mechanical vibration transmitted to tissues and organs, and the disruption of nerves and body fluids. Accompanied by vibration of the noise, can enhance the hearing damage, the hearing of human health also have an impact. Creatine kinase (CK) is present in large quantities in human muscles and in the brain, so whether or not CK is released from the tissue into the blood after exposure to noise and vibration is studied. Experimental set up three groups, set up another control group. The first group consisted of 20 workers with exposure noise and vibration exceeding the permissible standards (noise level 90 to 108 dB (A), 125 Hz band exceeding the permissible vibrational speed standard of 10 dB, and