This study applied the posturography framework on five static standing tasks from the Berg Balance Scale (BBS). Thirteen participants were recruited and the trajectory data of the center of pressure (CoP) were collected. To analyze the postural performance, two approaches were taken: the scores from the BBS and statistical analysis. For the statistical analysis, Spearman’s method was applied to determine the correlation of CoP parameters. The results revealed the correlations between CoP parameters in the anterior-posterior (AP) and medial-lateral (ML) directions, and on the statokinesgram (SK) plane for all tasks. To obtain the in-depth detail between normal weight and overweight groups, the differences in the postural control mechanism were defined by correlations of CoP parameters. The Mann-Whitney U test was conducted to define the difference in postural control in terms of difference in weight gain and standing task factors, while Cohen’s d was used to investigate the influence of the difference in standing tasks and weight gain on postural control. The results showed that the correlations of CoP parameters could distinguish the balance impairment in the overweight condition from the normal postural control. Otherwise, the scores of BBS, the Mann-Whitney U test and Cohen’s d did not separate this slightly compensatory movement during equilibrium. Therefore, the correlations of CoP parameters could provide more information to analyze the balance function in each individual, especially in terms of slight compensation.

中文翻译：

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超重成年人在五个不同站立任务上姿势稳定的压力中心测度的相关性研究。

这项研究将人体运动学框架应用于来自Berg Balance Scale（BBS）的五个静态站立任务。招募了13名参与者，并收集了压力中心（CoP）的轨迹数据。为了分析姿势表现，采用了两种方法：来自BBS的分数和统计分析。为了进行统计分析，使用Spearman方法确定CoP参数的相关性。结果显示，对于所有任务，CoP参数在前后（AP）和内侧-外侧（ML）方向以及在静态图（SK）平面上均具有相关性。为了获得正常体重和超重人群之间的深入细节，通过CoP参数的相关性定义了姿势控制机制的差异。d用于研究站立任务和体重增加的差异对姿势控制的影响。结果表明，CoP参数的相关性可以区分超重状态下的平衡受损与正常姿势控制。否则，BBS的分数，Mann-Whitney U检验和Cohen的d并没有在平衡期间将这种轻微的补偿运动分开。因此，CoP参数的相关性可以提供更多信息来分析每个人的平衡函数，尤其是在轻微补偿方面。