Published on in Vol 21, No 2 (2019): February
Preprints (earlier versions) of this paper are
available at
https://preprints.jmir.org/preprint/10985, first published
.
1 Faculty of Sport and Health Sciences, University of Jyväskylä, Jyväskylä, Finland
2 Faculty of Education and Psychology, University of Jyväskylä, Jyväskylä, Finland
3 Peurunka Rehabilitation, Laukaa, Finland