1. Applied Sports, Technology, Exercise and Medicine Research Centre, Swansea University, Swansea, UK
2. School of Medical and Health Sciences, Bangor University, Bangor, UK
3. Children’s Health and Exercise Research Centre, University of Exeter, Exeter, UK
4. Department of Paediatric Respiratory Medicine and Cystic Fibrosis Unit, Noah’s Ark Children’s Hospital for Wales, Cardiff, UK
5. Paediatric Department, Morriston Hospital, Swansea, UK