两种主动平衡评价方法在健康青年人中的应用*

关键词：姿势  平衡  主动  信度  健康人

Keywords:posture  balance  active  reliability  healthy adult

摘要：

      目的：分别应用临床多向伸及试验(MDRT)和实验室方法视觉反馈姿势描记(VFP)测试健康青年人的主动平衡能力，探讨两种方法的相关性及临床意义。方法：24名健康青年人分别进行MDRT和VFP，记录MDRT中的均值，VFP测试8个方向的稳定极限（LOS）值、平均速度(AV)、方向控制(DC)和达到时间(RT)。并分析人体身高、体重、足长对测试结果的影响。结果：①MDRT测试参数与相关方向上的LOS值均不相关；②两次VFP测试的一致性结果表明：除RT2以外，其余参数均显示一致性（P<0.05）。两次测试的总RT的一致性好（r＝0.910，P<0.000）。③VFP测试数据间的一致性，对于AV，除AV1和AV5之间无相关外，其余各方向上的AV均有相关性，而总AV与各方向上AV间的相关性较好（r＝0.710—0.897）；参数DC间的一致性稍差于AV，总DC和各方向上的DC具有一定的相关性（r＝0.443—0.788）；各方向的RT间相关性较差，但在左右对应方向上，RT有相关性，如r(2,8)=0.472；r(3,7)=0.610；r(4,6)=0.663；参数RT和DC间，其相关性主要集中在相同方向上，除在方向2外，其余方向上RT和DC具有一定的负相关性（r＝-0.477—-0.727）；AV和DC间相关性没有一定规律，但总DC和总AV有相关性（r＝-0.507）；而AV 和RT间具有的相关性要差于AV和DC间，其分布也没有规律性。④身高、体重、脚长和鞋的大小与各测试参数间未发现相关性。结论：VFP可与MDRT可以在临床中综合应用，共同评价人体主动平衡能力。

Abstract:

      Objective：To investigate the active balance ability measured by multi-directional reach test (MDRT) and visual feedback posturography(VFP) in healthy young subjects. Method：Twenty-four healthy young subjects were taken MDRT and VFP. The average values in MDRT were recorded, and three parameters including the limit of stability (LOS), average velocity (AV), directional control (DC) and reach time in 8 directions such as anterior, right-anterior, right, right-posterior, posterior, left-posterior, left and left-anterior in MDRT and VFP were recorded and analyzed. The effect of high, weight and foot size of subjects on the MDRT and VFP were also analyzed. Result：①The parameters of MDRT were not correlated with the value of LOS in related directions. ②The intraclass correlation coefficients for all parameters during repeated test were significant(P<0.05) except the RT2. ③The intraclass correlation coefficients for AV in 8 directions were significant except the AV1 and AV5, and there were excellent correlation between the total AV and eight AVs(r=0.710—0.897). There were correlation between the total DC and eight DCs (r=0.443—0.788). However, the correlation between RTs was significant only in the right-left direction[r(2,8)=0.472, r(3,7)=0.610, r(4,6)=0.663]. The interclass correlation coefficients for RT and DC was significant (r=-0.477—-0.727) except direction 2. The interclass correlation coefficients for total DC and total AV was significant (r=-0.507).④All the parameters were not correlated with the high, weight and foot size of subjects. Conclusion： VFP can be used to evaluate the active balance because of its test-retest repeatability and precise, and can be combined with MDRT in clinic application.