Program in Occupational Therapy, Washington University School of Medicine, St. Louis, Missouri.
J Occup Rehabil. 1993 Jun;3(2):65-81. doi: 10.1007/BF01078160.
The evaluation of lift capacity is an important part of most functional capacity evaluations. Several different methods have been developed to evaluate lift capacity in a safe, reliable, and valid manner. Isometric strength testing is one approach which has been demonstrated to be highly reliable. However, questions have been raised about the safety and validity of isometric strength testing as a predictor of "real world" lift capacity. One method to improve safety is to provide real time performance feedback so that the evaluee is able to increase psychophysical input to appropriately gauge his or her effort level. One method to improve reliability is to provide standardized instructions that are well understood by the evaluee. Both of these approaches have been utilized in the ERGOS Work Simulator, a computer-controlled multiple-task evaluation instrument that presents visual and auditory instructions to the evaluee along with "real-time" performance feedback. The safety, reliability, and validity of this computer-automated approach in comparison to an experienced human evaluator was evaluated in this research project. The results of this study demonstrate the efficacy of computerized instructions in an isometric strength testing system to achieve safe, reliable, and valid results. Intra-task variability may be improved by providing pre-test practice trials.
提升能力的评估是大多数功能能力评估的重要组成部分。已经开发出几种不同的方法，以安全、可靠和有效的方式评估提升能力。等长力量测试是一种已被证明具有高度可靠性的方法。然而，人们对等长力量测试作为“真实世界”提升能力预测指标的安全性和有效性提出了质疑。提高安全性的一种方法是提供实时性能反馈，以便评估者能够增加心理物理输入，以适当衡量他或她的努力水平。提高可靠性的一种方法是提供标准化的说明，以便评估者能够很好地理解。这两种方法都已在 ERGOS 工作模拟器中得到应用，该模拟器是一种计算机控制的多任务评估仪器，它向评估者呈现视觉和听觉说明以及“实时”性能反馈。在这项研究项目中，评估了这种计算机自动化方法与经验丰富的人类评估员相比的安全性、可靠性和有效性。这项研究的结果表明，在等长力量测试系统中，计算机化指令在实现安全、可靠和有效结果方面是有效的。通过提供预测试练习试验，可以提高任务内变异性。
