Heart rate and oxygen demand of powered exoskeleton-assisted walking in persons with paraplegia
Heart rate and oxygen demand of powered exoskeleton-assisted walking in persons with paraplegia
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DOI：
10.1682/jrrd.2014.02.0060
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发表时间：
2015-01-01
影响因子：
--
通讯作者：
Spungen, Ann M.
中科院分区：
文献类型：
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作者：
Asselin, Pierre;Knezevic, Steven;Spungen, Ann M.
从历史上看，瘫痪的人对地上假肢的选择有限。最近，动力外骨骼已经变得可用，动力外骨骼是转换用户的身体运动以激活使下肢移动通过预定步态模式的电机的系统。作为正在进行的临床研究（NCT 01454570）的一部分，8名截瘫不能行走的患者接受了使用动力外骨骼行走的训练。在坐姿、站立和行走时，每次操作期间分别记录6 mm的摄氧量（VO 2）和心率（HR）测量值。步行时的VO 2平均值（11.2 +/- 1.7 mL/kg/min）显著高于坐姿和站立时的VO 2平均值（分别为3.5 +/- 0.4和4.3 +/- 0.9 mL/kg/min; p < 0.001）。行走时的心率反应明显大于坐着或站立时的心率反应（分别为118 +/- 21 vs 70 +/- 10和81 +/- 12次/分钟; p < 0.001）。截瘫患者能够有效地使用动力外骨骼进行地上步行，提供了功能增益和改善健身的潜力。
Historically, persons with paralysis have limited options for overground ambulation. Recently, powered exoskeletons, which are systems that translate the user's body movements to activate motors that move the lower limbs through a predetermined gait pattern, have become available. As part of an ongoing clinical study (NCT01454570), eight nonambulatory persons with paraplegia were trained to ambulate with a powered exoskeleton. Measurements of oxygen uptake (VO2) and heart rate (HR) were recorded for 6 mm each during each maneuver while sitting, standing, and walking. The average value of VO2 during walking (11.2 +/- 1.7 mL/kg/min) was significantly higher than for sitting and standing (3.5 +/- 0.4 and 4.3 +/- 0.9 mL/kg/min, respectively; p < 0.001). The HR response during walking was significantly greater than that of either sitting or standing (118 +/- 21 vs 70 +/- 10 and 81 +/- 12 beats per minute, respectively; p < 0.001). Persons with paraplegia were able to ambulate efficiently using the powered exoskeleton for overground ambulation, providing the potential for functional gain and improved fitness.