Published on in Vol 8, No 4 (2020): Oct-Dec
Preprints (earlier versions) of this paper are
available at
https://preprints.jmir.org/preprint/19580, first published
.

1 Department of Exercise Science, Elon University , Elon, NC, US
2 Department of Physics, Elon University , Elon, NC, US
*all authors contributed equally