Published on in Vol 8 , No 7 (2020) :July
Preprints (earlier versions) of this paper are
available at
https://preprints.jmir.org/preprint/17216, first published
.

1 Graduate School of Medical Science and Engineering, Korea Advanced Institute of Science and Technology, Daejeon, KR
2 Major of Sports Health Rehabilitation, Cheongju University, Cheongju, KR
3 Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology, Daejeon, KR