Anttonen H, Virokannas H, Niskanen J
Oulu Regional Institute of Occupational Health, Finland.
Cent Eur J Public Health. 1995;3 Suppl:123-5.
Hand-arm vibration was measured on the handlebars of terrain vehicles (N = 36) and a postal inquiry was made among N = 2705 reindeer herders (snowmobile drivers). Since many subjects had also used other vibrating tools the snowmobile group proper (N = 334) was established. In the whole group 19% of the subjects reported having experienced white finger attacks and 48% numbness of the hands. The frequency-weighted acceleration of snowmobile vibration was 3.5 m/s2, and risk evaluation using the ISO 5349 standard predicted the prevalence of white finger well in the snowmobile group proper. The vibration levels were 1.6-7.9 m/s2 on snowmobiles, 5.5-11.8 m/s2 on all-terrain vehicles and 6.9-12.7 m/s2 on terrain motorcycles. The most critical points for damping the vibration were the motor mounting and resonance in the steering yoke. There is need for health care, technical improvements, and other protection means to reduce the symptoms of vibration in driving terrain vehicles.
在手扶式越野车（N = 36）的车把上测量了手臂振动情况，并对N = 2705名驯鹿牧民（雪地摩托驾驶者）进行了邮政调查。由于许多受试者还使用过其他振动工具，因此组建了纯雪地摩托组（N = 334）。在整个群体中，19%的受试者报告曾经历过白指发作，48%的受试者手部有麻木感。雪地摩托振动的频率加权加速度为3.5米/秒²，使用ISO 5349标准进行的风险评估在纯雪地摩托组中对白指患病率的预测效果良好。雪地摩托的振动水平为1.6 - 7.9米/秒²，全地形车为5.5 - 11.8米/秒²，地形摩托车为6.9 - 12.7米/秒²。减震的最关键点是发动机安装和转向节中的共振。需要医疗保健、技术改进及其他保护措施来减轻驾驶地形车辆时的振动症状。
