Shanghai Yangzhi Rehabilitation Hospital, Shanghai Sunshine Rehabilitation Center, Tongji University School of Medicine, Shanghai 201615, China.
Laboratory of Rehabilitation Engineering and Biomechanics, Tongji University School of Medicine, Shanghai 200092, China.
J Healthc Eng. 2021 Feb 28;2021:8866453. doi: 10.1155/2021/8866453. eCollection 2021.
The purpose of this experimental study was to investigate the effects of nonelastic taping and dual task on ankle kinematics and kinetics in gait analysis of healthy adults.
A total of 21 healthy adults completed trials of gait analysis using a Vicon system combining ground walking with different cognitive task conditions (none, modified Stroop color/character naming, and serial-7 subtraction), with or without nonelastic taping. Ankle kinematics and kinetics including speed, ankle plantarflexion and inversion angle, ground reaction force (GRF), and stride time variability (STV) under all conditions of taping (YES or NO) and cognitive task (none, naming, and subtraction) were characterized and analyzed with repeated-measures ANOVA.
As regards cognitive performance, the serial-7 subtraction performance under walking conditions with and without taping was significantly poorer than simple sitting condition ( < 0.001). For kinematics and kinetics, STV showed statistically significant decrease (=0.02) when subjects underwent taping application. Vertical GRF was significantly greater under taping than barefoot (=0.001). Ankle plantarflexion at initial contact (IC) under the dual-task walking was significantly more than under simple walking (=0.008).
Applications of nonelastic taping and dual task may lead to the STV, vertical GRF, ankle plantarflexion, and speed alterations because of restricted joint range of motion and changed sensorimotor neural circuit. When healthy adults performed dual-task walking, central neural resources allocation was disturbed, leading to weakened performance in both motor and cognitive tasks.
本实验研究的目的是探讨非弹性贴扎和双重任务对健康成年人步态分析中踝关节运动学和动力学的影响。
共有 21 名健康成年人完成了使用 Vicon 系统进行的步态分析试验，该系统将地面行走与不同认知任务条件（无、改良 Stroop 颜色/字符命名和连续 7 减）结合起来，同时进行或不进行非弹性贴扎。在所有贴扎（是或否）和认知任务（无、命名和减法）条件下，特征和分析了包括速度、踝关节跖屈和内翻角度、地面反力（GRF）和步长时间变异性（STV）在内的踝关节运动学和动力学。采用重复测量方差分析。
就认知表现而言，在有和没有贴扎的行走条件下进行连续 7 减的表现明显差于简单的坐姿条件（<0.001）。对于运动学和动力学，当受试者进行贴扎应用时，STV 显示出统计学上的显著降低（=0.02）。在贴扎下垂直 GRF 明显大于赤脚（=0.001）。在双重任务行走中初始接触（IC）下的踝关节跖屈明显大于简单行走（=0.008）。
非弹性贴扎和双重任务的应用可能会导致 STV、垂直 GRF、踝关节跖屈和速度改变，因为关节活动范围受限和感觉运动神经回路改变。当健康成年人进行双重任务行走时，中枢神经资源分配受到干扰，导致运动和认知任务的表现都减弱。
