Beaumont D, Noeuveglise M, Vibert M L
Paritary Association of Occupational Medicine-APMT, Paris, France.
Cent Eur J Public Health. 1995;3 Suppl:103-6.
As occupational physicians in the building industry, we observed among these workers a high frequency of vibration exposure, during different tasks. We intended to study vibration exposure effects on vibration perception thresholds measured by digital tactilometry in this population of construction workers. A cross-sectional field study was made, 405 subjects were examined; each of them answered a questionnaire, underwent a medical examination and performed a test measuring his vibration perception thresholds, 150 subjects constituted the reference group. A close relationship between age and thresholds among the non-exposed group was observed. A threshold normalization of age of study the 204 exposed subjects was applied. Two exposure indices allowing time dependency vibration exposure analysis were defined the present daily exposure and cumulated exposure. In the examined population, thresholds rise with the present daily exposure in hours per day for 125 Hertz, while no significant influence of cumulated exposure is apparent. It was also pointed out that subjects exposed more than one and a half hour per day have higher thresholds than reference subjects, even if they do not have any clinical neurological complaints. This results seems to indicate the infraclinical feature of the test. These results suggest that screening of hand-arm vibration exposed population should be developed using this method. As occupational physicians in the construction industry, practising in Paris and surrounding areas, the authors studied the relationship between neurological disorders measured by vibrotactile perception thresholds, and hand-arm vibration exposure, among workers. They present the results of a field study they led within their institute, in collaboration with the tested workers' firms, and with the financial participation of the French Ministry of Labour.
作为建筑行业的职业医生，我们观察到这些工人在不同任务期间振动暴露的频率很高。我们打算研究振动暴露对这群建筑工人通过数字触觉测量法测得的振动感知阈值的影响。进行了一项横断面现场研究，检查了405名受试者；他们每个人都回答了一份问卷，接受了医学检查，并进行了一项测量其振动感知阈值的测试，150名受试者构成了参照组。在未暴露组中观察到年龄与阈值之间存在密切关系。对204名暴露受试者的年龄进行了阈值标准化。定义了两个允许进行时间依赖性振动暴露分析的暴露指数，即当前每日暴露量和累积暴露量。在被检查人群中，对于125赫兹，阈值随每天的当前每日暴露量（以小时为单位）而升高，而累积暴露量没有明显的显著影响。还指出，即使没有任何临床神经学症状，每天暴露超过一个半小时的受试者的阈值也高于参照受试者。这一结果似乎表明了该测试的亚临床特征。这些结果表明，应使用这种方法对手臂振动暴露人群进行筛查。作为在巴黎及周边地区执业的建筑行业职业医生，作者们研究了通过振动触觉感知阈值测量的神经障碍与工人手臂振动暴露之间的关系。他们展示了他们在研究所内与受试工人所在公司合作开展的一项现场研究的结果，该研究得到了法国劳动部的资金支持。
