Department of Kinesiology, University of Waterloo, Waterloo, ON, Canada.
Int J Occup Saf Ergon. 2009;15(4):409-18. doi: 10.1080/10803548.2009.11076821.
The wool harvesting industry employs workers of varying skill levels that differ in both quality and number of harvested fleeces. As it was unknown how skill affected parameters such as joint posture and loading, the current study comparatively examined 140 wool harvesting workers representing 4 skill levels during wool harvesting competitions. Three-dimensional upper limb postures and peak and cumulative shoulder moments were calculated for each worker. Results indicated that elite wool harvesters, in general, used different shoulder postures to perform the harvesting tasks and were thus exposed to different shoulder moments as compared to the lower skill levels. It is plausible that these adopted postures allow the higher class workers to perform their job with higher quality and greater speed as compared to the lower ranked workers. Posturalbased training may help improve technique in lower ranked workers and enable these workers to achieve higher ranked status.
羊毛收割行业雇佣了不同技能水平的工人，这些工人的收割羊毛的质量和数量都有所不同。由于尚不清楚技能如何影响关节姿势和负荷等参数，因此本研究在羊毛收割比赛中比较性地检查了代表 4 个技能水平的 140 名羊毛收割工人。为每个工人计算了三维上肢姿势以及峰值和累积肩部力矩。结果表明，一般来说，精英羊毛收割者在执行收割任务时使用不同的肩部姿势，因此与较低技能水平相比，他们承受的肩部力矩也不同。可以合理地认为，这些采用的姿势使较高等级的工人能够以更高的质量和更高的速度完成工作，而不是较低等级的工人。基于姿势的训练可能有助于提高低等级工人的技术，并使这些工人能够获得更高的等级地位。
