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首页> 外文期刊>Fisioterapia em Movimento >Identification of changes in kinematics and electromyographic parameters during dual-task gait: a comparative study between young and elderly female subjects
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Identification of changes in kinematics and electromyographic parameters during dual-task gait: a comparative study between young and elderly female subjects

机译：识别双任务步态运动学和肌电参数的变化：青年和老年女性受试者之间的比较研究。

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Abstract Introduction : Falls during gait are one of the leading causes of death and injuries in elderly adults. Objective : This study aimed to compare the performance of young (YG) and elderly (EG) adults during dual-task gait (using a traffic light simulator) according to kinematics and electromyographic parameters. Materials and methods : 17 young and 18 elderly physically fit female subjects participated in this study. The volunteers walked on a treadmill under two different conditions: normal gait (M1) and dual-task gait (M2). We recorded EMG signals from the rectus femoris (RF), vastus medialis (VM), vastus lateralis (VL), biceps femoris (BF), tibialis anterior (TA), gastrocnemius lateralis (GL) and soleus (SO). The following kinematic data were obtained: step length, step time and self-selected velocity. Data analysis was performed using Wilcoxon's, Mann-Whitney, T-student tests and T-student for independent samples. The level of significance was set at p 0.05. Results : For both groups, there was greater muscle activation of the RF, VM, VL, BF and SO during M2 than during M1. The YG showed lower muscle activation of the RF, VM, BF and SO during M2 when compared to EG. The EG had smaller step length than the YG. The step length values detected during M1 were higher than the ones collected during M2. During M2, the YG showed higher step time compared to the EG. Elderly subjects walked at a lower self-selected velocity than young subjects. Conclusions : Our findings suggest that dual-task gait modify the neuromuscular behavior in elderly subjects, increasing the risk of falls.
机译：摘要简介：步态跌倒是老年人死亡和受伤的主要原因之一。目的：本研究旨在根据运动学和肌电图参数比较双任务步态（使用交通信号灯模拟器）中青年（YG）和老年人（EG）的表现。材料和方法：17名年轻和18名身体健壮的女性受试者参加了这项研究。志愿者在两种不同的条件下在跑步机上行走：正常步态（M1）和双任务步态（M2）。我们记录了来自股直肌（RF），股内侧肌（VM），股外侧肌（VL），股二头肌（BF），胫前肌（TA），腓肠肌外侧肌（GL）和比目鱼肌（SO）的肌电信号。获得了以下运动学数据：步长，步长和自选速度。使用Wilcoxon's，Mann-Whitney，T型学生测试和T型学生对独立样本进行数据分析。显着性水平设定为p <0.05。结果：两组患者在M2期间的RF，VM，VL，BF和SO的肌肉活化程度均高于M1。与EG相比，YG在M2期间显示出较低的RF，VM，BF和SO肌肉激活。 EG的步长小于YG。 M1期间检测到的步长值高于M2期间收集的步长值。在M2期间，与EG相比，YG的步伐时间更长。老年受试者的行走速度低于年轻受试者。结论：我们的研究结果表明，双任务步态改变了老年受试者的神经肌肉行为，增加了跌倒的风险。

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