Published on in Vol 6, No 9 (2018): September
Preprints (earlier versions) of this paper are
available at
https://preprints.jmir.org/preprint/10799, first published
.
1 Institute of Clinical Exercise and Health Science, School of Health and Life Sciences, University of the West of Scotland, Blantyre, United Kingdom
2 School of Applied Sciences, Edinburgh Napier University, Edinburgh, United Kingdom