1Department of Mechanical Engineering, University of Washington, Seattle, WA, USA
2Department of Electrical and Computer Engineering, University of Washington, Seattle, WA, USA
3Department of Physical Medicine and Rehabilitation, Northwestern University, Chicago, IL, USA
4Shirley Ryan AbilityLab, Chicago, IL, USA
5Department of Rehabilitation Medicine, University of Washington, Seattle, WA, USA
6Department of Pediatrics, Seattle Children's Research Institute, Seattle, WA, USA
Corresponding author: Heather A. Feldner, Division of Physical Therapy, Department of Rehabilitation Medicine, University of Washington, 1959 NE Pacific St BB 828A, Box 356490, Seattle, WA 98195, USA. Email: [email protected]
Associate Editor: Christopher Wong