Purpose: To identify the smallest change in handgrip strength (HGS) in children that can be considered of practical significance. Method: A total of 290 male and female children, aged 6–13 years, performed a HGS testing protocol 3 times within a 7-day period. The typical error of measurement (TE), coefficient of variation, and smallest worthwhile change (SWC) were calculated for each sex and age group (grade). Results: The TE for the combined group of grade 1 to 7 children was 1.3 kg. Changes in HGS associated with a small change were 1.3 kg, making it difficult for the HGS test to detect these changes. The TE was less than the medium (3.3 kg) and large (5.3 kg) changes in HGS for all the grades and sexes, making changes of these magnitudes more interpretable as they exceed the “noise” (TE) of the measurement. Conclusion: Changes in HGS greater than the TE and SWC can be considered real changes of practical significance. This provides researchers with an extra level of analysis when trying to determine the practical relevance of the observed changes.

目的：确定可被认为具有实际意义的儿童握力 (HGS) 的最小变化。方法：共有 290 名 6-13 岁的男女儿童在 7 天内进行了 3 次 HGS 测试方案。计算了每个性别和年龄组（等级）的典型测量误差（TE）、变异系数和最小有价值的变化（SWC）。结果： 1～7年级儿童联合组的TE为1.3 kg。与微小变化相关的 HGS 变化为 1.3 kg，因此 HGS 测试很难检测到这些变化。TE 小于中型（3.3 公斤）和大型(5.3 kg) 所有年级和性别的 HGS 变化，使这些幅度的变化更容易解释，因为它们超过了测量的“噪声”(TE)。结论： HGS的变化大于TE和SWC可以认为是具有实际意义的真实变化。这为研究人员在尝试确定观察到的变化的实际相关性时提供了额外的分析水平。