Paalanne Niko P, Korpelainen Raija, Taimela Simo P, Remes Jouko, Salakka Matti, Karppinen Jaro I
Department of Sports Medicine, Deaconess Institute of Oulu, Oulu, Finland.
J Strength Cond Res. 2009 Aug;23(5):1618-26. doi: 10.1519/JSC.0b013e3181a3cdfc.
The objectives of the study were to evaluate the reproducibility of the maximal isometric trunk muscle strength testing and inclinometric method to measure body sway and to establish reference values for these measurements in young Finnish adults. Reproducibility was assessed with 2 repeated measurements. Reference values are based on the cross-sectional cohort data. Maximal isometric trunk extension, flexion, and rotations were measured in standing posture. Body sway was measured with inclinometric method. The subjects (N = 874) belonged to a subcohort of the Northern Finland Birth Cohort 1986. Intrarater reliability was assessed with 19 volunteers from the birth cohort, and interrater reliability was assessed with 15 young healthy adults. Intrarater reliability intraclass correlation coefficients (ICCs) for body sway measurements ranged from 0.39 to 0.74 and for trunk muscle strength measurements from 0.84 to 0.94. Interrater reliability ICC for body sway ranged from 0.61 to 0.85 and for trunk muscle strength from 0.84 to 0.88. Maximal muscle strength was better in men than in women, but extensor to flexor ratio was higher in women. Women had significantly better values in all body sway measurements than men. Our study showed a remarkable biological variation in isometric trunk muscle strength and inclinometric body sway. Although ICC analysis indicated good reliability, the Bland and Altman analysis revealed quite wide range of measurement error. However, reproducibility of isometric trunk muscle testing is comparable to other measurements of trunk muscle function in use. Reference values collected in our study offer valuable normative data for future studies and can be used as a tool when assessing physical capacity of healthy subjects or patients with different pathological conditions.
本研究的目的是评估最大等长躯干肌肉力量测试和测斜仪测量身体摇摆方法的可重复性，并为芬兰年轻成年人的这些测量建立参考值。通过两次重复测量评估可重复性。参考值基于横断面队列数据。在站立姿势下测量最大等长躯干伸展、屈曲和旋转。用测斜仪测量身体摇摆。受试者（N = 874）属于1986年芬兰北部出生队列的一个子队列。从出生队列中选取19名志愿者评估测量者内信度，选取15名年轻健康成年人评估测量者间信度。身体摇摆测量的测量者内信度组内相关系数（ICC）范围为0.39至0.74，躯干肌肉力量测量的ICC范围为0.84至0.94。身体摇摆的测量者间信度ICC范围为0.61至0.85，躯干肌肉力量的ICC范围为0.84至0.88。男性的最大肌肉力量优于女性，但女性的伸肌与屈肌比率更高。女性在所有身体摇摆测量中的值均显著优于男性。我们的研究表明，等长躯干肌肉力量和测斜仪测量的身体摇摆存在显著的生物学差异。尽管ICC分析表明可靠性良好，但Bland和Altman分析显示测量误差范围相当宽。然而，等长躯干肌肉测试的可重复性与其他常用的躯干肌肉功能测量方法相当。我们研究中收集的参考值为未来研究提供了有价值的规范数据，可作为评估健康受试者或不同病理状况患者身体能力的工具。
