Pereira Raphael C M, Vigário Patrícia S, Mainenti Míriam R M, Silva Dalila T R, Lima Tatiana R L, Lemos Thiago
Programa de Pós-Graduação em Ciências da Reabilitação, Centro Universitário Augusto Motta - UNISUAM, Rio de Janeiro, Brazil.
Divisão de Pesquisa e Extensão, Escola de Educação Física do Exército - EsEFEx, Rio de Janeiro, Brazil.
J Bodyw Mov Ther. 2019 Jan;23(1):142-147. doi: 10.1016/j.jbmt.2018.06.010. Epub 2018 Jun 27.
The aim of the study was to provide a computerized photogrammetric description of the postural alignment of visually impaired athletes.
Twenty-six athletes were evaluated. Athletes were asked to stand at easy with styrofoam balls placed on selected anatomical landmarks, and photographic images were acquired in four viewpoints. Postural Assessment Software (PAS/SAPO) was applied for image analysis. Body's angles and distances were calculated and transformed in absolute (nonnegative) values for analysis. Factor analysis was applied for data reduction.
Absolute values of PAS/SAPO variables resulted in lower coefficient of variation (CV) than raw values (average of 57% versus 500%, respectively), which potentially enhances the comparative use of these measures. Head's forward positioning and rightward inclination were among the most prevalent postural deviation, being observed in more than 70% of the athletes. With respect to the magnitude of the deviation, large variability was observed in data derived from anterior/posterior compared with lateral viewpoint. For instance, head's rightward inclination (head horizontal alignment in the anterior view) achieved 2.9 ± 2.5° (mean ± SD), with a CV of 86%, while head's forward positioning (C7 horizontal alignment in left viewpoint) reaches 42.7 ± 6.6°, with a CV of only 16%. Factor analysis did not result in significant data reduction, although anterior body's angles and distances were identified as important sources of data variability.
The PAS/SAPO values described here can be adopted as reference for future investigations of postural alignment in visually impaired athletes.
本研究旨在对视力受损运动员的姿势对齐进行计算机摄影测量描述。
对26名运动员进行了评估。要求运动员轻松站立，在选定的解剖标志点放置泡沫塑料球，并从四个角度获取照片图像。使用姿势评估软件（PAS/SAPO）进行图像分析。计算身体的角度和距离，并将其转换为绝对值（非负值）进行分析。应用因子分析进行数据简化。
PAS/SAPO变量的绝对值导致变异系数（CV）低于原始值（分别为57%和500%），这可能增强了这些测量方法的比较性应用。头部向前定位和向右倾斜是最常见的姿势偏差，超过70%的运动员存在这种情况。就偏差幅度而言，与侧面视角相比，从前/后视角获得的数据存在较大变异性。例如，头部向右倾斜（前视图中的头部水平对齐）为2.9±2.5°（平均值±标准差），CV为86%，而头部向前定位（左视图中的C7水平对齐）达到42.7±6.6°，CV仅为16%。尽管身体前部的角度和距离被确定为数据变异性的重要来源，但因子分析并未导致显著的数据简化。
此处描述的PAS/SAPO值可作为未来视力受损运动员姿势对齐研究的参考。
