TY - JOUR
T1 - Rehabilitation exoskeleton design
T2 - Exploring the effect of the anterior lunge degree of freedom
AU - Stegall, Paul
AU - Winfree, Kyle
AU - Zanotto, Damiano
AU - Agrawal, Sunil Kumar
PY - 2013
Y1 - 2013
N2 - As our robotics community advances its understanding toward the optimal design of robotic exoskeletons for human gait training, the question we ask in this paper is how the anterior lunge degree of freedom in the robotic exoskeleton affects human gait training. Answering this question requires both novel robotic design and novel protocols for human gait training to characterize this effect. To the best of the authors' knowledge, this is the first study to characterize the effect of an exoskeleton's degrees of freedom on human gait adaptation. We explored this question using the Active Leg EXoskeleton (ALEX) II. The study presented was performed using ALEX II under the following two configurations: 1) locking the anterior/posterior translation in the exoskeleton, while allowing other degrees-of-freedom (labeled as locked mode) and 2) keeping the anterior/posterior degree of freedom unlocked (labeled as unlocked mode). Healthy subjects walked at self-selected speeds on a treadmill and were trained to walk with a new gait template, scaled down from their normal template. While both groups showed adaptation and retention over a 26-min period following training, the unlocked group showed better performance in terms of adaptation and retention compared with the locked group.
AB - As our robotics community advances its understanding toward the optimal design of robotic exoskeletons for human gait training, the question we ask in this paper is how the anterior lunge degree of freedom in the robotic exoskeleton affects human gait training. Answering this question requires both novel robotic design and novel protocols for human gait training to characterize this effect. To the best of the authors' knowledge, this is the first study to characterize the effect of an exoskeleton's degrees of freedom on human gait adaptation. We explored this question using the Active Leg EXoskeleton (ALEX) II. The study presented was performed using ALEX II under the following two configurations: 1) locking the anterior/posterior translation in the exoskeleton, while allowing other degrees-of-freedom (labeled as locked mode) and 2) keeping the anterior/posterior degree of freedom unlocked (labeled as unlocked mode). Healthy subjects walked at self-selected speeds on a treadmill and were trained to walk with a new gait template, scaled down from their normal template. While both groups showed adaptation and retention over a 26-min period following training, the unlocked group showed better performance in terms of adaptation and retention compared with the locked group.
KW - Exoskeletons
KW - gait training
KW - lunge degree of freedom
UR - http://www.scopus.com/inward/record.url?scp=84881552102&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84881552102&partnerID=8YFLogxK
U2 - 10.1109/TRO.2013.2256309
DO - 10.1109/TRO.2013.2256309
M3 - Article
AN - SCOPUS:84881552102
SN - 1552-3098
VL - 29
SP - 838
EP - 846
JO - IEEE Transactions on Robotics
JF - IEEE Transactions on Robotics
IS - 4
M1 - 6504536
ER -