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首页> 外文期刊>Journal of Biomechanics >Test-retest reliability for assessment of postural stability using center of pressure spatial patterns of three-dimensional statokinesigrams in young health participants
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Test-retest reliability for assessment of postural stability using center of pressure spatial patterns of three-dimensional statokinesigrams in young health participants

机译：青年健康参与者使用三维状态动图的压力中心空间模式评估姿势稳定性的重测信度

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Introduction: This study investigated the test-retest reliability for assessment of postural stability using a quantitative method for identification of center of pressure (CoP) spatial patterns of three-dimensional statokinesigrams (3D-SKG). Methods: Twenty-one healthy participants (11 women, age 26.8±7.2 years, body mass index 25.6±5.3kg/m2) were submitted to four consecutive 60-s trials while performing undisturbed upright stance with feet together, with or without visual input each. CoP data was used to calculate parameters from the 3D-SKG (quantity of high-density regions, nHDR). Stabilogram (standard deviation, range, maximum velocity) and statokinesigram (elliptical area, average velocity) were also calculated. Intraclass correlation coefficients (ICC2,1 and ICC2,4) and repeated-measures analysis-of-variance were used for statistical analysis. Results: Significant differences in nHDR among trials were not noticed in both protocols, as well as for any parameter of the stabilogram or statokinesigram (all P0.05). Reliability for identification of nHDR with or without visual input was either excellent (ICC2,4=0.844 and 0.792, respectively) or fair to good (ICC2,1=0.575 and 0.488, respectively). Reliability of parameters from stabilogram and statokinesigram varied from excellent to poor for either postural task with (ICC2,4 range: 0.961-0.491; ICC2,1 range: 0.859-0.194) or without visual input (ICC2,4 range: 0.990-0.444; ICC2,1 range: 0.960-0.166). Conclusions: Test-retest reliability for identification of CoP spatial patterns is excellent or fair to good using averaged or single measurements of nHDR, respectively. No learning effect on repeated trials for identification of CoP spatial patterns was detected but deserves further research.
机译：简介：本研究使用定量方法识别三维状态动图（3D-SKG）的压力中心（CoP）空间模式，研究了重测可靠性以评估姿势稳定性。方法：21名健康参与者（11名女性，年龄26.8±7.2岁，体重指数25.6±5.3kg / m2）接受连续四次60 s试验，同时以双脚并拢进行直立姿势，无论是否有视觉输入每。 CoP数据用于根据3D-SKG（高密度区域的数量，nHDR）计算参数。还计算了稳定图（标准差，范围，最大速度）和静态图（椭圆面积，平均速度）。类内相关系数（ICC2,1和ICC2,4）和重复测量方差分析用于统计分析。结果：在两个实验方案中，以及在稳定图或稳态图的任何参数上，均未发现nHDR的显着差异（所有P> 0.05）。无论有无视觉输入，鉴定nHDR的可靠性都非常好（分别为ICC2,4 = 0.844和0.792）或相当好（分别为ICC2,1 = 0.575和0.488）。对于姿势任务（ICC2,4范围：0.961-0.491; ICC2.1范围：0.859-0.194）或无视觉输入（ICC2.4范围：0.990-0.444;或姿势不佳），稳定图和静态图像的参数的可靠性从优到差。 ICC2,1范围：0.960-0.166）。结论：分别使用nHDR的平均值或单次测量，用于CoP空间模式识别的重测信度极好或相当。未发现重复试验对识别CoP空间模式有学习效果，但值得进一步研究。

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