Valizadeh Leila, Mofateh Razieh, Zahednejad Shahla, Salehi Reza, Karimi Mehrnoosh, Mehravar Mohammad
Rehabilitation Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran.
Student Research Committee, School of Rehabilitation Sciences, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran.
Med J Islam Repub Iran. 2023 Jul 18;37:81. doi: 10.47176/mjiri.37.81. eCollection 2023.
The present study aimed to compare the effects of simultaneous cognitive and motor tasks on walking performance between individuals with nonspecific chronic low back pain (NSCLBP) and healthy controls.
A total of 20 patients with NSCLBP and 20 healthy controls participated in this study. They walked at their self-selected speed on a treadmill under 3 walking conditions in a randomized order: walking only, walking while performing a concurrent cognitive task, and walking while performing a concurrent motor task. Two-way repeated measure analysis of variance with additional post hoc comparison (Bonferroni test) was used to evaluate the effects of group and walking conditions on gait parameters.
The result showed a significant main effect of the group for swing time ( = 0.012) and double support time ( = 0.021) in those with NSCLBP compared with healthy controls. Moreover, there was a significant interaction between the group and condition for cadence ( = 0.004) and step width variability ( = 0.016).Regarding stride length variability and stride time variability, the analysis indicated a significant effect of condition (P = 0.002 and P = 0.030, respectively). In both groups, no significant differences were observed in gait parameters between motor dual task and single walking ( > 0.05).
Our findings indicated that those with NSCLBP adapted successfully to walking performance to maintain the performance of the concurrent cognitive task under the cognitive dual-task walking condition. Moreover, the present study observed no dual-task interference under the motor dual-task condition.
本研究旨在比较非特异性慢性下腰痛（NSCLBP）患者与健康对照者在同时进行认知和运动任务时对步行表现的影响。
共有20例NSCLBP患者和20名健康对照者参与本研究。他们在跑步机上以自选速度在3种步行条件下随机行走：仅步行、在进行同时性认知任务时步行、在进行同时性运动任务时步行。采用双向重复测量方差分析及额外的事后比较（Bonferroni检验）来评估组和步行条件对步态参数的影响。
结果显示，与健康对照者相比，NSCLBP患者在摆动时间（P = 0.012）和双支撑时间（P = 0.021）方面存在显著的组间主效应。此外，在步频（P = 0.004）和步宽变异性（P = 0.016）方面，组和条件之间存在显著的交互作用。关于步长变异性和步幅时间变异性，分析表明条件具有显著影响（分别为P = 0.002和P = 0.030）。在两组中，运动双重任务和单步行之间的步态参数均未观察到显著差异（P>0.05）。
我们的研究结果表明，NSCLBP患者在认知双重任务步行条件下成功适应步行表现以维持同时性认知任务的表现。此外，本研究在运动双重任务条件下未观察到双重任务干扰。
