1. Division of Companion Animal Science, Institute of Comparative Medicine, University of Glasgow, Glasgow, G61 1QH, UK
2. Department of Physics and Astronomy, University of Glasgow, Glasgow, G12 8QQ, UK
3. School of Sport and Exercise Sciences, University of Leeds, Leeds, LS2 9JT, UK
4. Centre for Exercise Science and Medicine, Institute of Biomedical and Life Sciences, University of Glasgow, Glasgow, G12 8QQ, UK
5. Division of Community Health Sciences, University of Dundee, Dundee, DD2 4BF, UK
6. Scottish Universities Environmental Research Centre, East Kilbride, G75 OQF, UK