Department of Rehabilitation, Kyushu University of Nursing and Social Welfare, Kumamoto, Japan.
Department of Physical Therapy, Kobe International University, Hyogo, Japan.
Sci Rep. 2022 Jun 24;12(1):10755. doi: 10.1038/s41598-022-14975-4.
In this study, we investigated the differences of the effectiveness from concurrent visual feedback among younger and older adults in learning tasks that require adjustability of grasping force (AGF), as well as the functions related to AGF in each generation. The younger and older adult groups were evaluated for simple visual reaction time as visual-motor speed (VMS) and a 100 g AGF task that reflected the difference between desired performance and actual performance. The main learning task was then practiced using concurrent visual feedback and tested without feedback. The VMS of older adults was slower than that of the younger, and the error in the 100 g AGF task was larger in older adults than in the younger adults. Performance improved from pre-test to retention test in both groups, but the older adult group failed to reach the level of the younger adult group. The results of this study show that concurrent visual feedback is effective for learning the tasks that require AGF in both groups. Indicatively, improvement in performance during practice is insufficient in older people for whom there is a large difference between desired performance and actual performance, or whose VMS is slow.
在这项研究中，我们调查了在需要调整抓握力（AGF）的学习任务中，年轻和年长成人之间从视觉反馈中获得的效果差异，以及每个年龄段与 AGF 相关的功能。我们评估了年轻和年长成人组的简单视觉反应时间（VMS）和 100g 的 AGF 任务，该任务反映了期望表现和实际表现之间的差异。然后，使用并发视觉反馈进行主要学习任务的练习，并在没有反馈的情况下进行测试。年长成人的 VMS 比年轻成人慢，年长成人的 100g AGF 任务的错误比年轻成人大。两组的表现都从预测试提高到保持测试，但年长成人组未能达到年轻成人组的水平。本研究结果表明，并发视觉反馈对两组中需要 AGF 的任务的学习都是有效的。指示性地，对于那些期望表现和实际表现差异较大或 VMS 较慢的人来说，在练习期间的表现提高是不够的。
