J Orthop Sports Phys Ther. 1992;16(5):215-9. doi: 10.2519/jospt.1992.16.5.215.
Quantitative measurement of grip strength is an important variable when plotting the progress of a hand-injured patient. When utilizing traditional commercially available apparatuses, obtaining meaningful grip strength measurement in these subjects is frequently difficult due to severe deformity, high tissue sensitivity, and low levels of force generated. The purpose of this study was to measure hand grip strength using two instruments having different physical characteristics and units of measurement to determine the reliability of repeated measures with each instrument. Additionally, validity of the sphygmomanometer for strength measurement was established through comparison with the values obtained from measurements using the research-validated Jamar dynamometer. Twenty-nine right hand dominant female college-age subjects volunteered to perform hand grip strength testing. Measurements were taken with a sphygmomanometer and a Jamar dynamometer while utilizing standardized measurement procedures. A Spearman Rho correlation coefficient test utilized in measuring within-instrument reliability showed a high correlation for each instrument at .85 for the sphygmomanometer and .82 for the Jamar dynamometer. Construct validity testing performed to determine validity of the measurements by the sphygmomanometer compared with the Jamar dynamometer produced a .75 correlation. A formula for conversion of the sphygmomanometer scores into Jamar units was developed to enhance reporting of sphygmomanometer scores utilizing the Jamar standard. The study showed that the sphygmomanometer and Jamar dynamometer exhibit good within-instrument reliability. Validity of the sphygmomanometer as a grip measurement device is acceptable and reportable using the conversion formula developed. Therefore, it can be utilized with confidence as essentially equal to the Jamar unit for grip strength measurement. J Orthop Sports Phys Ther 1992;16(5):215-219.
定量测量握力是绘制手部受伤患者进展情况的一个重要变量。在使用传统的商业上可获得的设备时，由于严重的畸形、高组织敏感性和产生的力水平低，经常难以获得有意义的握力测量值。本研究的目的是使用两种具有不同物理特性和测量单位的仪器来测量手部握力，以确定每种仪器的重复测量的可靠性。此外，还通过与经过研究验证的 Jamar 测力计测量值进行比较，确定了血压计用于强度测量的有效性。29 名右手优势的年轻女性大学生自愿进行手部握力测试。使用标准化的测量程序，使用血压计和 Jamar 测力计进行测量。在测量仪器内可靠性时使用 Spearman Rho 相关系数测试，结果显示血压计的相关性很高，为.85，而 Jamar 测力计的相关性为.82。为了确定血压计测量值的有效性，进行了结构有效性测试，将血压计与 Jamar 测力计进行比较，产生了.75 的相关性。为了增强利用 Jamar 标准报告血压计分数的能力，开发了一种将血压计分数转换为 Jamar 单位的公式。该研究表明，血压计和 Jamar 测力计具有良好的仪器内可靠性。血压计作为握力测量设备的有效性是可以接受的，并且可以使用开发的转换公式进行报告。因此，可以自信地将其用于握力测量，与 Jamar 单位基本等效。J Orthop Sports Phys Ther 1992;16(5):215-219.
