The purpose of this pilot study is to investigate the clinical effects of a new upper limb robot assisted therapy device that is linked to a virtual therapy environment in patients with stroke.

The number of physically weak individuals is increasing, resulting in a higher burden on health care and health care workers. The use of robot assisted therapy (RAT) might partly solve this problem. Rehabilitation progress highly depends on training intensity and training duration, favouring the use of RAT.

In this pilot study, the clinical effects of using a new upper arm RAT device for upper arm rehabilitation in patients with stroke is investigated. Myo-electrical signals will serve as input for the device, assisting the user in flexion and extension of the elbow. The device is coupled to a virtual environments, creating a stimulating therapy environment.

Inclusion Criteria:

• Patients with stroke, more than three months post onset
• No or moderate spasticity in the upper limb (maximum score of 3 on Modified Ashworth Scale)
• Observable voluntary muscle activity in biceps and triceps muscle of the affected upper limb (minimal score of 1 on the Medical research council score)
• Able to sit on a chair with adequate trunk stability
• Able to follow verbal instructions
• Able to communicate verbal information to the researchers

Exclusion Criteria:

• Patients who are medically unstable
• Cognitive disorders impeding the intervention
• Visual disorders impeding the intervention
• Subluxation of the shoulder joint
• Pusher syndrome