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首页> 外文会议>Annual rocky mountain bioengineering symposium >OVERGROUND WALKING ALONG WITH COUNTING BACKWARDS INFLUENCES MOVEMENT VARIABILITY IN HEALTHY YOUNG AND OLDER ADULTS
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OVERGROUND WALKING ALONG WITH COUNTING BACKWARDS INFLUENCES MOVEMENT VARIABILITY IN HEALTHY YOUNG AND OLDER ADULTS

机译：在倒计时，在倒计时散步，影响健康年轻人和老年人的运动变异性

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Performance of secondary task i.e. dual task affects certain aspects of gait, but the relationship between gait variability and dual tasking is not well understood. This study evaluated the effects of the dual-task paradigm on measures of movement variability changes in two healthy age groups. Seven young (age 22.6±2.5 years, height 170.3±9.3 cm and weight 69.6±15.5 Kgs) and seven old participants (age 71.14±6.5 years, height 174.5±10.2 cm and weight 78.5±18.2 Kgs) were recruited for this study. Since cognitive task such as mental arithmetic tasks (for example counting backwards by subtracting three digits) are self-generated, and are performed with selected spontaneous rhythm, so are used as secondary task while walking. An inertial measurement unit was affixed at sternum level and anterior-posterior angular velocities were used for determining stride intervals and peak accelerations during each stride. It was found that healthy older adults have significantly higher dynamic stability (p<0.01) and we also found that dual-tasking significantly increases complexity in stride interval time signals in both young and older adults (p=0.01). In conclusion the findings of this study elucidate that dual-task related changes in gait compensate with movement variability but may not predispose healthy young and older adults to falls.
机译：二次任务的性能I.E。双重任务影响步态的某些方面，但步态变异性与双重任务之间的关系并不充分了解。本研究评估了双重任务范式对两组健康年龄群体运动变化措施的影响。七个年轻（22.6±2.5岁，身高170.3±9.3厘米）和七个旧参与者（71.14±6.5岁，身高174.5±10.2厘米和重量78.5±18.2千克）进行本研究。由于诸如心理算术任务的认知任务（例如通过减去三位数向后计数）自生成，并且用所选择的自发节律执行，因此在步行时用作二级任务。在胸骨水平下固定惯性测量单元，并且前后角速度用于在每个步幅期间确定步幅间隔和峰值加速度。发现健康的老年人具有显着高的动态稳定性（P <0.01），我们还发现双任务在年轻人和较老年人中，双重任务显着提高了在高龄和老年人的进步间隔时间信号中的复杂性（P = 0.01）。总之，本研究的调查结果阐明了步态的双重任务相关变化弥补了运动变异性，但可能不会让健康年轻人和老年人倾向于跌倒。

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