The effect of different types of motor imagery on walking, tiredness, quality of life, motor imagery ability and gait adaption with music beat in people with multiple sclerosis

INTERVENTION: The intervention will consist of: Group 1: Motor imagery with instrumental music and verbal cueing emphasising the temporal music pattern Group 2: Motor imagery with instrumental music Group 3: Motor imagery All participants will continue to have their normal treatment, weekly phone calls supporting their motor imagery and asking for their health condition, motor imagery familiarisation , study CD prepared, weekly change of audio mix Participants in all groups will be asked to practise once a day for 17 minutes, 6 times a week for 4 weeks, while seated on a chair, with eyes closed, using the kinaesthetic mode from a first person perspective. This means that they should 'feel' themselves walking during the imagery. CONDITION: Multiple sclerosis ; Nervous System Diseases ; Multiple sclerosis PRIMARY OUTCOME: All outcome measures will be taken at baseline and at follow‐up, after the 4 weeks intervention:; 1. Timed 25‐Foot Walk; 2. 6‐Minute Walk Test SECONDARY OUTCOME: All outcome measures will be taken at baseline and at follow‐up, after the 4 weeks intervention:; 1. Modified Fatigue Impact Scale; 2. Multiple Sclerosis Impact Scale‐29; 3. German short form of the Kinaesthetic and Visual Imagery questionnaire; 4. Time‐Dependent Motor Imagery Screening test; 5. Sensorimotor synchronisation: Video‐assisted quantitative gait analysis (ccc.Utilius‐Fairplay5 motion analysis software) during walking to music beat, right/left sides separately: Step length and step time variability, proportion of step duration to the beat duration, synchronicity INCLUSION CRITERIA: 1. People with mild to moderate MS (Expanded Disability Status Scale 1.5‐4.5) 2. Aged 18 years or over 3. Clinical definite MS according to McDonald's criteria 4. All MS phenotypes 5. Any ethnicity 5. German speaking