Ortqvist Maria, Gutierrez-Farewik Elena M, Farewik Markus, Jansson Anna, Bartonek Asa, Broström Eva
Department of Women & Child Health, Karolinska Institutet, Stockholm, Sweden.
Arch Phys Med Rehabil. 2007 Sep;88(9):1164-70. doi: 10.1016/j.apmr.2007.05.028.
To test the reliability of a new muscle strength testing instrument (the Strength Measuring Chair [SMC]) designed to quantify isometric strength in the lower extremities, and to determine the agreement between the SMC and an isokinetic dynamometer (Biodex).
Isometric strength tests were performed in plantarflexors with 2 different knee positions (60 degrees, 30 degrees). Measurements were taken at 3 different sessions.
Strength testing laboratory.
Twenty-three able-bodied adults and 15 able-bodied children.
Not applicable.
Isometric plantarflexor strength.
The reliability of isometric strength measurements of plantarflexors taken in the SMC was excellent for both the adult and children groups (intraclass correlation coefficient range, .84-.87). A Bland-Altman 95% limit of agreement test showed no systematic variation in 3 of the 4 SMC test observations; systematic variation was only observed in the adult group at a knee position of 30 degrees. There was no systematic difference in the adult group between the SMC and the isokinetic dynamometer, but there was a systematic variation in the children's group.
The SMC reliably measured isometric plantarflexor strength in the tested populations.
测试一种旨在量化下肢等长肌力的新型肌力测试仪器（力量测量椅[SMC]）的可靠性，并确定SMC与等速测力计（Biodex）之间的一致性。
在两种不同膝关节位置（60度、30度）下对跖屈肌进行等长肌力测试。在3个不同时间段进行测量。
力量测试实验室。
23名身体健康的成年人和15名身体健康的儿童。
不适用。
跖屈肌等长肌力。
SMC测量的跖屈肌等长肌力在成人组和儿童组中的可靠性均极佳（组内相关系数范围为0.84 - 0.87）。Bland-Altman 95%一致性界限检验显示，在4次SMC测试观察中的3次未发现系统差异；仅在成人组膝关节位置为30度时观察到系统差异。成人组中SMC与等速测力计之间无系统差异，但儿童组存在系统差异。
SMC在受试人群中可靠地测量了跖屈肌等长肌力。
