Department of Physical Rehabilitation Medicine, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand.
Department of Physics and Materials Science, Faculty of Science, Chiang Mai University, Chiang Mai, Thailand.
Sci Rep. 2024 Aug 29;14(1):20113. doi: 10.1038/s41598-024-71094-y.
This pilot study aims to evaluate concurrent validity using the goniometer as a reference tool and test-retest reliability of flexion of metacarpal phalangeal joint (MCP) measurements taken from a finger training device (air-guitar system) in healthy participants. There were ten self -reported asymptomatic participants recruited to test the devices. The measurements of all metacarpophangeal joints of the dominant hands were conducted using a finger goniometer and the air-guitar system. Two measuring sessions were conducted on the same day. The concurrent validity of the air-guitar indicated by strong concordance correlation coefficient (0.62-0.90) with the goniometer and mean difference (approximately 1°) between the two instruments are well below the limit of 5°. The test-retest reliability of MCP measurements from the air-guitar glove (0.82-0.99) was acceptable as a clinically meaningful measurement tool as the intraclass correlation coefficients were higher than 0.7. The standard error of measurement and minimal detectable change of the air-guitar are similar to those of the goniometer. The air-guitar tracking features, when used as a home-based therapy tool, may assist in monitoring change of MCP flexion over a time course with good reliability and strongly associated with the measurements from the goniometer.
本初步研究旨在使用量角器作为参考工具评估伴同有效性，并评估使用手指训练设备（空气吉他系统）测量的掌指关节（MCP）弯曲度在健康参与者中的重测信度。招募了 10 名自我报告无症状的参与者来测试这些设备。使用手指量角器和空气吉他系统对优势手的所有掌指关节进行测量。在同一天进行了两次测量。空气吉他的伴同有效性通过与量角器之间的强一致性相关系数（0.62-0.90）和两种仪器之间的平均差异（约 1°）得到证实，均远低于 5°的限值。空气吉他手套的 MCP 测量的重测信度（0.82-0.99）是可接受的，因为作为临床有意义的测量工具，组内相关系数高于 0.7。空气吉他的测量误差和最小可检测变化与量角器相似。当用作基于家庭的治疗工具时，空气吉他的跟踪功能可能有助于以良好的可靠性监测 MCP 弯曲度随时间的变化，并且与量角器的测量结果密切相关。
