In post-stroke rehabilitation of the affected upper limb, increasing treatment intensity has been shown to lead to better outcomes compared to conventional approaches with fewer hours of therapy per day and week. However, logistical, human, and material constraints in neurorehabilitation centres often limit the feasibility of increasing treatment intensity.

The GRASP programme (Graded Repetitive Arm Supplementary Program) is a home-based exercise intervention grounded in motor learning principles and conducted weekly under the supervision of an occupational therapist. This strategy enables the intensity of upper limb rehabilitation to be increased by up to seven additional hours per week.

This project aims to evaluate the effectiveness of the Spanish version of the HomeGRASP programme, implemented as an adjunct to conventional occupational therapy, in improving quality of life, autonomy, and upper limb functionality in people after stroke. To this end, a single-blind, randomised controlled clinical trial will be conducted. Participants in the experimental group will receive conventional occupational therapy in addition to the HomeGRASP programme performed at home, while those in the control group will receive only conventional therapy. The treatment period for both groups will last eight weeks.

Participants will be assessed at baseline and after the 8-week intervention period by a blinded evaluator. The primary outcomes will include changes in quality of life and upper limb functionality, measured using the CAVIDACE scale and the Wolf Motor Function Test. Secondary outcomes will include upper limb dexterity and personal autonomy, assessed using the Box and Block Test, Purdue Pegboard Test, Motor Activity Log-30, Duruöz Hand Index, and the Functional Independence Measure (FIM).

Stroke is a sudden neurological event that can cause temporary or permanent impairments depending on the brain area affected. Among the resulting deficits, the loss of upper limb functionality on the affected side is one of the greatest challenges in rehabilitation. It is estimated that at least 80% of stroke survivors experience some degree of upper limb dysfunction, while only about 15% achieve significant functional recovery. Given the critical role of the arms and hands in performing activities of daily living (ADLs), such impairments can severely reduce a person's independence and contribute to long-term disability.

Recent studies have highlighted that the time allocated for upper limb rehabilitation in standard care is often insufficient. Increasing the intensity of therapy has been shown to yield better functional outcomes, especially in the chronic phase of stroke recovery. Strategies to increase intensity include extending the duration of therapy sessions and promoting a higher number of task repetitions, which support motor learning and functional generalisation. While technologies such as robotics and virtual reality are being used to deliver more intensive therapy at home, they often come with increased costs and usability barriers, particularly for older adults or those unfamiliar with digital tools.

A practical solution is the implementation of structured home-based exercise programmes. One such programme is the Graded Repetitive Arm Supplementary Program (GRASP), developed by the University of British Columbia. GRASP consists of a set of 33 structured exercises targeting various aspects of upper limb rehabilitation, including stretching, strength, coordination, and fine motor skills. It is delivered in a self-directed format with weekly supervision by an occupational therapist. The programme includes initial in-person instruction, delivery of all required materials, and weekly monitoring through exercise logs and patient feedback. Pain levels are tracked using a visual analogue scale to ensure patient safety and guide therapy adjustments. The standard application involves performing one hour of daily exercises, seven days a week, over an eight-week period.

Inclusion Criteria:

• Be of legal age.
• Have suffered only one stroke and be clinically stable.
• At least 3 months must have passed since the stroke and less than 12 months.
• Signing of informed consent
• Be able to communicate any adverse effects (e.g. shoulder pain)
• Be able to follow instructions and perform the exercises independently for one hour. If they are not able to do so, have the help of a caregiver to ensure that the exercises are performed.
• Perform at least 10º of active wrist or finger extension.
• Ability to raise the scapula of the affected upper limb against gravity.

Exclusion Criteria:

• Having neurological conditions other than stroke.
• Experiencing excessive pain in the affected upper limb that prevents the patient from correctly performing the exercises proposed in the programme. Visual Analogue Scale (VAS > 7).
• Having a visual perception deficit that prevents the patient from correctly performing the exercises proposed in the programme.
• Excessive muscle tone (spasticity or hypertonia) that prevents the person from correctly performing the exercises proposed in the programme. Asworth > 2.
• A Folstein Mini-Mental State Examination (MMSE) score of ≥22 is required.

The principal investigator will carry out the statistical analysis without any contact with the participants or involvement in data collection. All participant assessments will be conducted by an external evaluator who is not involved in the implementation of the intervention or the project team.