1. Research Centre for Applied Sport, Physical Activity and Performance, University of Central Lancashire, Preston PR1 2HE, UK
2. School of Animal, Rural and Environmental Sciences, Nottingham Trent University, Nottingham NG1 4FQ, UK
3. Owl House, Signet, Oxford OX4 2DU, UK
4. Equine Clinics/Movement Science Group, University of Veterinary Medicine Vienna, 1210 Vienna, Austria
5. Department of Anatomy, Physiology and Biochemistry, Swedish University of Agricultural Sciences, SE-750 07 Uppsala, Sweden