@article {1470702, title = {Reducing the metabolic rate of walking and running with a versatile, portable exosuit}, journal = {Science}, volume = {365}, number = {6454}, year = {2019}, pages = {668-672}, abstract = {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{\textquoteright}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{\textquoteright}s versatility.}, url = {http://science.sciencemag.org/cgi/content/full/365/6454/668?ijkey=d9y.Kwfg4guac\&keytype=ref\&siteid=sci}, author = {Jinsoo Kim and Lee, Giuk and Roman Heimgartner and Dheepak Arumukhom Revi and Nikos Karavas and Danielle Nathanson and Ignacio Galiana and Eckert-Erdheim, Asa and Patrick Murphy and David Perry and Nicolas Menard and Dabin Kim Choe and Philippe Malcolm and Walsh, Conor J.} }