Patients with physical impairments that affect their capacity to perform the STS movement and who are about to start active rehabilitation will be identified by the clinical team on the ward. If individuals identified in this way indicate to the clinical team that they are willing to talk to the researcher about the study a mutually convenient time will be arranged for the researcher to speak individually to the patient about the study. An information sheet will be left with the patient and they will be encouraged to read this and speak to family and friends about their possible participation. No less than 48 hours after the information sheet is provided, the researcher will make contact with the patient to discuss their participation and take written consent if agreed. This recruitment process and their participation in the study will not interfere with discharge planning during the study.