RECRUITMENT Patients who have completed their CCS community occupational and physiotherapy rehabilitation will be sent a letter of invitation to participate in this study and an information sheet (see attached 'Letter of Invitation' and 'participant information sheet'). In the letter they will be asked to contact the chief investigator if they are interested in participating, explaining that he will answer any questions that they have about participation and arrange to visit them in their home in order to demonstrate some of the exercises. Then, if they are interested the chief investigator will leave a consent form for them to sign and return within a week.