Kubicki Alexandre
Institut National de la Santé et de la Recherche Médicale (INSERM), Unité 1093, Cognition Action et Plasticité sensori-motrice, BP 27877, F-21078 Dijon, France; Hôpital de Jour de Champmaillot, Pôle gérontologique, CHU Dijon, 2 rue Jules Violle, 21000 Dijon, France.
Neurosci Lett. 2014 Aug 8;577:89-94. doi: 10.1016/j.neulet.2014.06.014. Epub 2014 Jun 13.
In order to assess functional skills of older adults, both timed up and go (TUG) test and gait speed (GS) test are well validated concerning their predictive capacities. However, the question remains unclear which one of these tests represents better the whole physical performance of older adults. The aim of this study is to determine the more representative test, between TUG and GS, of the whole motor control quality. To study links between locomotion capacities and arm function, we measured, in a population of frail aged patients, the locomotion tests and the mean arm maximal velocity developed during a speed-accuracy trade-off. This arm movement consisted in reaching the hand toward a target in a virtual game scene. We plotted the different couples of variables obtained on graphs, and calculate Pearson correlation coefficients between each couple. The Pearson correlation between GS and hand maximal velocity was significant (r=0.495; p=0.046). Interestingly, we found a non significant Pearson correlation between timed up and go score (TUG) and hand maximal velocity (r=-0.139; p=0.243). Our results suggest that GS score is more representative of the whole motor ability of frail patients than the TUG. We propose that the relative complexity of the TUG motor sequence could be involved in this difference. For a few patients with motor automatisms deficiencies, this motor sequence complexity could leads to a dual task perturbation. In this way, we conclude that GS should be preferred over the TUG with older adults.
为了评估老年人的功能技能，计时起立行走（TUG）测试和步速（GS）测试在其预测能力方面都得到了充分验证。然而，这些测试中哪一项能更好地代表老年人的整体身体表现，这个问题仍不明确。本研究的目的是确定在TUG和GS之间，哪一项测试能更代表整体运动控制质量。为了研究运动能力与手臂功能之间的联系，我们在一组体弱老年患者中测量了运动测试以及在速度 - 准确性权衡过程中手臂平均最大速度。这种手臂运动包括在虚拟游戏场景中伸手朝向目标。我们将在图表上获得的不同变量对进行绘制，并计算每对变量之间的皮尔逊相关系数。GS与手部最大速度之间的皮尔逊相关性显著（r = 0.495；p = 0.046）。有趣的是，我们发现计时起立行走得分（TUG）与手部最大速度之间的皮尔逊相关性不显著（r = -0.139；p = 0.243）。我们的结果表明，对于体弱患者，GS得分比TUG更能代表整体运动能力。我们认为TUG运动序列的相对复杂性可能与这种差异有关。对于一些存在运动自动性缺陷的患者，这种运动序列复杂性可能导致双重任务干扰。通过这种方式，我们得出结论，在评估老年人时，GS应优于TUG。
