Stability and intra-tester reliability of an in vivo measurement of thoracic axial rotation using an innovative methodology

被引:23
作者
Heneghan, Nicola R. [1 ]
Hall, Alison
Hollands, Mark [1 ]
Balanos, George M. [1 ]
机构
[1] Univ Birmingham, Sch Sport & Exercise Sci, Birmingham B15 2TT, W Midlands, England
关键词
Thoracic spine; Axial rotation; Reliability; Motion analysis; SPINE;
D O I
10.1016/j.math.2008.10.004
中图分类号
R49 [康复医学];
学科分类号
100215 ;
摘要
The aim of this study was to evaluate the stability and intra-tester reliability of an innovative approach to measure active thoracic spine axial rotation. Ultrasound imaging of a thoracic vertebra in conjunction with Polhemus motion analysis of the transducer was used to measure axial thoracic spine rotation in a functional position. The range of motion in a convenience sample of asymptomatic subjects (n = 24) was calculated across ten repetitions of a single trial to evaluate stability. The protocol was repeated the same day and 7-10 days later to provide data for within and between day intra-tester reliability. Mean total range of axial rotation was 85.15 degrees across a single trial with SD = 14.8. CV = 17.4, SEM = 3.04. SEM ranged 0.63-3.37 for individual subjects and 2.60-3.64 across repetitions. Stability of performance occurred at repetitions 2-4. Intra-tester reliability (ICC(2,1)) was excellent within day (0.89-0.98) and good/excellent between days (0.72 0.94). Bland-Altman plots however suggest that agreement may range from 0 to 10% for within day measures and from 0 to 15% for between day measures. Whether this combined approach has sufficient precision and accuracy as a clinical research toot has yet to be fully evaluated. (C) 2008 Elsevier Ltd. All rights reserved.
引用
收藏
页码:452 / 455
页数:4
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