Institute for Occupational Safety and Health of the German Social Accident Insurance (IFA), Alte Heerstrasse 111, Sankt Augustin, 53757, DE, Germany; University Hospital Tuebingen, Institute of Occupational and Social Medicine and Health Services Research (IASV), Wilhelmstrasse 27, Tuebingen, 72074, DE, Germany.
Institute for Occupational Safety and Health of the German Social Accident Insurance (IFA), Alte Heerstrasse 111, Sankt Augustin, 53757, DE, Germany.
Appl Ergon. 2021 Apr;92:103310. doi: 10.1016/j.apergo.2020.103310. Epub 2020 Dec 21.
Direct-measurement-based methods for assessing workloads of the hand or elbow in the field are rare. Aim of the study was to develop such a method based on the Threshold Limit Value for Hand Activity Level (TLV for HAL). Hence, HAL was quantified using kinematic data (mean power frequencies, angular velocities and micro-pauses) and combined with electromyographic data (root-mean-square values) in order to generate a measurement-based TLV for HAL (mTLV for HAL). The multi-sensor system CUELA including inertial sensors, potentiometers and a 4-channel surface electromyography module was used. For wrist and elbow regions, associations between mTLV for HAL and disorders/complaints (quantified by odds ratios (OR [95%-confidence interval])) were tested exploratively within a cross-sectional field study with 500 participants. Higher workloads were frequently significantly associated with arthrosis of distal joints (9.23 [3.29-25.87]), wrist complaints (2.89 [1.63-5.11]) or elbow complaints (1.99 [1.08-3.67]). The new method could extend previous application possibilities.
直接测量法在评估手部或肘部工作量方面的应用较为少见。本研究旨在基于手部活动限值（TLV-HAL）开发一种直接测量法，为此，使用运动学数据（平均功率频率、角速度和微停顿）和肌电图数据（均方根值）对 HAL 进行量化，从而生成基于测量的 HAL 限值（mTLV-HAL）。研究使用了包含惯性传感器、电位器和 4 通道表面肌电图模块的多传感器系统 CUELA。在一项包含 500 名参与者的横断面现场研究中，我们探索性地检验了 mTLV-HAL 与腕关节和肘关节疾病/抱怨（用比值比（OR [95%置信区间]）进行量化）之间的关联。较高的工作量通常与远侧关节的关节炎（9.23 [3.29-25.87]）、腕部抱怨（2.89 [1.63-5.11]）或肘部抱怨（1.99 [1.08-3.67]）存在显著关联。新方法可以扩展之前的应用可能性。
