No previous studies have investigated the test–retest reliability of tip, key, and palmar pinch force sense in healthy adults. The present study explores the test-retest reliability of tip, key, and palmar pinch force sense for different force levels in healthy adults during an ipsilateral force reproduction task. Fifty-six healthy subjects were instructed to produce varying levels of reference forces (10, 30, and 50% maximal voluntary isometric contraction (MVIC)) using three types of pinches (tip pinch, palmar pinch, and key pinch) and to reproduce these forces using the same hand. The subjects were tested twice by the same experienced testers, 1 week apart. Based on the high values of the intraclass correlation coefficient (ICC), the tip pinch (0.783–0.895) and palmar pinch (0.752–0.903) force sense tests demonstrated good reliability for all the variables. The ICCs for the key pinch (0.712–0.881) indicated fair to good relative test-retest reliability. 1) This study demonstrates that high test-retest reliability of tip, key, and palmar pinch force sense in healthy adults can be achieved using standardized positioning and the proposed approach. 2) According to the reliability measurements, 30 and 50% maximal voluntary isometric contraction (MVIC) are the most reliable pinch force sense levels.

中文翻译：

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对健康成年人的笔尖，按键和手掌捏力感进行测试-重新测试可靠性

以前没有研究调查健康成年人的笔尖，按键和手掌捏力感的重测信度。本研究探讨了健康同龄人在同侧力再生任务中，不同力量水平下笔尖，钥匙和手掌捏力感的重测可靠性。指示56名健康受试者使用三种捏法（尖端捏法，手掌捏法和关键捏法）产生不同水平的参考力（最大自愿等距收缩（MVIC）的10％，30％和50％）并重现这些捏法用同一只手。受试者由同一位经验丰富的测试人员进行了两次测试，相隔1周。基于组内相关系数（ICC）的高值，尖端捏（0.783–0.895）和手掌捏（0.752-0）。903）力觉测试证明了所有变量的可靠性。关键捏的ICC（0.712–0.881）表明相对良好的相对重测可靠性。1）这项研究表明，使用标准化的定位方法和建议的方法，可以在健康成年人中获得较高的重测笔尖，按键和手掌捏力感的可靠性。2）根据可靠性测量，最可靠的捏力感测级别为30％和50％最大自发等距收缩（MVIC）。