Correlation between temporal-spatial parameters and manual ability of adults with dyskinetic cerebral palsy

The aim of this study was to verify relation between kinematic variables of temporal-spatial parameters and manual ability and between own temporal-spatial variables during the movement of bring a mug to the mouth in adults with dyskinetic cerebral palsy (DCP). Sixteen adults with DCP were evaluated by MACS (Manual Ability Classification System), and by temporal-spatial variables of tridimensional kinematics of the movement to bring a bug to the mouth by means of 9 cameras infra-red Vicon(r) MX 40 (Oxford Metrics Group, Oxford, UK). The Spearman correlation coefficient (ρ) was used to correlate variables. As a result, we found weak correlation between the classification of manual ability and the adjusting phase (ρ=0.219), the velocity variables - average velocity (ρ=-0.313), peak velocity (ρ=-0.282) and time to peak velocity (ρ=-0.250). No correlation was found between the variables going and returning phase and MACS. Moderate correlation was found between going and returning phase (ρ=0.559), between the going phase and time to peak velocity (ρ=0.518) and between the adjusting phase and peak velocity (ρ=-0.562). A strong correlation was found between the mean velocity and peak velocity (ρ=0.947) and between the adjusting phase and average velocity (ρ=-0.635). In conclusion, functional impairment may be related to longer adjusting phase and decrease of movement speed in subjects with PCD. Kinematic variables were related to each other in moderate and strong way and indicated that the phases runtime influences the movement speed.

本研究旨在验证时空参数的动力学变量与手动能力，以及成年人痉挛性脑瘫（DCP）患者在将茶杯送至嘴边的运动过程中自身时空变量之间的关系。通过对16名DCP成年患者进行MACS（手动能力分类系统）评估，以及利用9台红外Vicon(r) MX 40（牛津度量集团，牛津，英国）摄像机对将昆虫送至嘴边的三维运动时空变量进行测量，对受试者进行了评估。采用Spearman相关系数（ρ）对变量进行相关性分析。结果显示，手动能力的分类与调整阶段（ρ=0.219）之间存在弱相关性，速度变量——平均速度（ρ=-0.313）、峰值速度（ρ=-0.282）和峰值速度时间（ρ=-0.250）之间也存在弱相关性。运动阶段与返回阶段以及MACS之间不存在相关性。运动阶段与返回阶段（ρ=0.559）、运动阶段与峰值速度时间（ρ=0.518）以及调整阶段与峰值速度（ρ=-0.562）之间存在中等相关性。平均速度与峰值速度（ρ=0.947）以及调整阶段与平均速度（ρ=-0.635）之间存在强相关性。综上所述，功能损害可能与调整阶段延长和运动速度降低有关。动力学变量之间存在着中等和强的相关性，表明运动阶段的运行时间影响了运动速度。