Piche Elodie, Gerus Pauline, Chorin Fréderic, Jaafar Amyn, Guerin Olivier, Zory Raphaël
Université Côte d'Azur, LAMHESS, Nice, France; Université Côte d'Azur, Centre Hospitalier Universitaire de Nice, Clinique Gériatrique du Cerveau et du Mouvement, Nice, France.
Université Côte d'Azur, LAMHESS, Nice, France.
Gait Posture. 2022 Jun;95:63-69. doi: 10.1016/j.gaitpost.2022.04.006. Epub 2022 Apr 12.
Dual-task (DT) walking has increasingly been investigated over the last decade because of its valuable role as a clinical marker of both cognitive impairment and fall risk in older adults based on cognitive and motor performance (DTEcog, DTEmotor). However, there is still a lack of information on what type of dual task to choose and which is the most adapted to the population of interest.
To evaluate the effect of different dual-tasks (DT3, DT7, FLU, STROOP) on the spatiotemporal and kinematic parameters of hip, knee, and ankle joints.
Thirty-eight older adults were recruited (9 men, 29 women, mean age = 77.5 +/- 6.5 years, mean height = 163.6 +/- 8.6 cm, mean weight = 67.5 +/- 15.3 kg). They performed a single and dual-task walk with the 4 types of tasks during 1 min, equipped with an inertial system. Dual-task effect (DTE) on spatiotemporal and kinematic variables as well as cognitive score and speed were calculated.
An alteration in most of the spatiotemporal parameters was observed in each DT condition (p < 0.05), especially in arithmetic tasks (DT3, DT7), while no DT effect was noticed on kinematic parameters (RMSE<3°) except on hip and knee angular velocities (RMSE>15°). Arithmetic tasks seemed to alter more spatiotemporal and kinematic parameters than the verbal fluency or STROOP test. However, DT7 appeared to be too difficult for the population of interest.
Arithmetic tasks seemed to be very pertinent as a clinical dual-task protocol for older adults. The use of an inertial system to retrieve kinematic variables is an improvement in these dual-task protocols.
在过去十年中，双任务（DT）行走越来越受到研究，因为它作为认知障碍和老年人跌倒风险的临床标志物，在认知和运动表现（DTEcog、DTEmotor）方面具有重要作用。然而，关于选择何种类型的双任务以及哪种最适合目标人群，仍然缺乏相关信息。
评估不同双任务（DT3、DT7、FLU、STROOP）对髋、膝和踝关节时空参数及运动学参数的影响。
招募了38名老年人（9名男性，29名女性，平均年龄 = 77.5 ± 6.5岁，平均身高 = 163.6 ± 8.6厘米，平均体重 = 67.5 ± 15.3千克）。他们在配备惯性系统的情况下，分别进行了1分钟的单任务行走和4种类型任务的双任务行走。计算了双任务对时空和运动学变量以及认知得分和速度的影响。
在每种双任务条件下，大多数时空参数都发生了改变（p < 0.05），尤其是在算术任务（DT3、DT7）中，而除了髋和膝关节角速度（RMSE>15°）外，未观察到双任务对运动学参数（RMSE<3°）有影响。算术任务似乎比言语流畅性或STROOP测试更能改变时空和运动学参数。然而，DT7对目标人群来说似乎太难了。
算术任务似乎作为老年人临床双任务方案非常合适。使用惯性系统获取运动学变量是这些双任务方案的一项改进。
