Objective: To investigate the reliability and the concurrent validity of maximal tactile pressures and forces of a sustained grasp task using a TactArray device in healthy adults.Methods: Healthy participants (n = 18, mean age: 62.2 ± 9.9 years) performed three repeat trials of sustained maximal grasp over 8 seconds. Both hands were tested in within-day and between-day sessions, with vision and without vision. Measures of maximal tactile pressures and forces were measured for the complete grasp duration (8s) and for the plateau phase (5s). Measures of maximal tactile pressures and forces were reported using the highest value among three repeat trials, the mean of two repeat trials, and the mean of three repeat trials. Reliability was determined using changes in mean, coefficients of variation and intraclass correlation coefficients (ICCs). Pearson correlation coefficients were used to evaluate concurrent validity.Results: Changes in mean were very good, coefficients of variation were good to acceptable and ICCs were very good to good for maximal tactile pressures using the highest value among three repeat trials and the mean of three repeat trials for the complete grasp duration (8s) and for the plateau phase (5s) in the dominant hand with and without vision and in the non-dominant hand without vision for within-day and between-day sessions. Maximal tactile pressures had moderate to large correlations with grip strength.Conclusion: The TactArray device demonstrates satisfactory reliability for maximal tactile pressures during a sustained grasp for within-day and between-day testing sessions in both hands. Validity was satisfactory with grip strength in both hands.

中文翻译：

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使用TactArray设备测量持续抓握任务的最大触觉压力在健康人群中具有令人满意的可靠性和有效性。

目的：探讨使用TactArray装置对健康成年人进行持续抓握任务的最大触觉压力和力量的可靠性和同时有效性。方法：健康参与者（n = 18，平均年龄：62.2±9.9岁）进行了三项重复试验在8秒内持续最大抓地力。在一天之内和一天之内的两个时段内，无论是否有视力，都对两只手进行了测试。在整个抓握时间（8s）和平稳阶段（5s）中，测量了最大触觉压力和力的测量值。使用三个重复试验中的最高值，两个重复试验的平均值和三个重复试验的平均值来报告最大触觉压力和力的测量值。使用均值，变异系数和组内相关系数（ICC）的变化确定可靠性。结果：平均触觉变化非常好，变异系数在可接受的范围内，ICC在最大触觉压力下表现良好，在三个重复试验中均取最大值，三个平均值取平均值，则ICC非常好。在一天之内和一天之间的时段内，对于有视力和无视力的优势手和无视力的无优势手，重复完整的抓握时间（8s）和高原期（5s）的试验。最大触觉压力与握力有中等到较大的相关性。结论：TactArray设备在持续抓握两只手的日间和日间测试过程中，显示​​出最大触觉压力的令人满意的可靠性。双手握力的有效性令人满意。