Reducing the metabolic rate of walking and running with a versatile, portable exosuit
Reducing the metabolic rate of walking and running with a versatile, portable exosuit
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DOI：
10.1126/science.aav7536
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发表时间：
2019-08-16
期刊：
影响因子：
56.9
通讯作者：
Walsh, Conor J.
中科院分区：
文献类型：
--
作者：
Kim, Jinsoo;Lee, Giuk;Walsh, Conor J.
行走和跑步有着根本不同的生物力学原理，这使得开发帮助两种步态的设备具有挑战性。我们的研究表明，与不带外运动服的运动相比，便携式髋关节伸展外衣可以使跑步机以每秒1.5米的速度行走的代谢率降低9.3%，以每秒2.5m的速度跑步的代谢率降低4.0%。这些减重幅度相当于步行和跑步时分别减掉7.4公斤和5.7公斤的效果，并且处于显示出有意义的运动成绩变化的范围内。Exosuit根据估计的穿戴者重心的势能波动，自动在两种步态的驱动轮廓之间切换。单参与者实验表明，可以降低不同跑步速度和上坡步行的代谢率，进一步证明了外衣的多功能性。
Walking and running have fundamentally different biomechanics, which makes developing devices that assist both gaits challenging. We show that a portable exosuit that assists hip extension can reduce the metabolic rate of treadmill walking at 1.5 meters per second by 9.3% and that of running at 2.5 meters per second by 4.0% compared with locomotion without the exosuit. These reduction magnitudes are comparable to the effects of taking off 7.4 and 5.7 kilograms during walking and running, respectively, and are in a range that has shown meaningful athletic performance changes. The exosuit automatically switches between actuation profiles for both gaits, on the basis of estimated potential energy fluctuations of the wearer's center of mass. Single-participant experiments show that it is possible to reduce metabolic rates of different running speeds and uphill walking, further demonstrating the exosuit's versatility.