Participants enrolled for the main study will be asked if they would be willing to take part in the reproducibility sub-study, until ten participants have been recruited. These participants will then undertake an additional 20 minute scan on the same on the 3T platform to assess myocardial triglyceride and PEDSR. The 3T scan will consist of localisers, cine long axis 4 chamber, 3 chamber and short axis at mid for calculation of myocardial strain rates as previously described, followed by single voxel H+ MRS of the interventricular septum to allow calculation of myocardial triglyceride content. No contrast will be administered during this examination.