In Europe, personal trainers may work independently, but will constantly require accreditation by one of many key certifying bodies [fifteen] for example: StradWin Stradwin is really an experimental, cross-platform Instrument mostly for freehand 3D ultrasound acquisition, visualisation and elastography. Nevertheless, Stradwin will also be applied with 3D health-related data https://www.youtube.com/watch?v=gmXE_YtOm9w