Bongers P M, Hulshof C T, Dijkstra L, Boshuizen H C, Groenhout H J, Valken E
Coronel Laboratory, University of Amsterdam, The Netherlands.
Ergonomics. 1990 Aug;33(8):1007-26. doi: 10.1080/00140139008925309.
In a questionnaire survey the prevalence of back pain in 163 helicopter pilots was compared to that in a control group of 297 non-flying air force officers who underwent the same pre-employment medical examination. Since pilots document their hours of flight in a personal flight log, an accurate estimate of the duration of exposure could be made. In addition, vibration levels of the helicopters were measured and an accumulative vibration dose was calculated for each pilot. 'Transient' back pain of a short duration was more frequent amongst the pilots compared to the control group, and the prevalence of 'chronic' back pain of a persistent nature was also higher amongst the helicopter pilots. Transient back pain seemed to be most strongly related to the average hours of flight per day, whereas chronic back pain was more closely related to total hours of flight or the accumulative vibration dose. A significant higher prevalence of this chronic back pain was observed only after 2000 hours of flight or a vibration dose of 400 m2h/s4. The observed health effects may be due to vibration or constrained posture but are most likely due to concomitant exposure to both factors.
在一项问卷调查中,将163名直升机飞行员的背痛患病率与297名接受相同入职前体检的非飞行空军军官对照组进行了比较。由于飞行员会在个人飞行日志中记录飞行时间,因此可以准确估算暴露时长。此外,还测量了直升机的振动水平,并为每位飞行员计算了累积振动剂量。与对照组相比,飞行员中短时间的“短暂性”背痛更为常见,直升机飞行员中持续性“慢性”背痛的患病率也更高。短暂性背痛似乎与每天的平均飞行小时数关系最为密切,而慢性背痛则与总飞行小时数或累积振动剂量关系更为密切。仅在飞行2000小时或振动剂量达到400 m2h/s4之后,才观察到这种慢性背痛的患病率显著更高。观察到的健康影响可能是由于振动或受限姿势,但很可能是由于同时接触这两种因素所致。