Researchers looked at how different types of exercise help people with stroke-related weakness in their hands and arms. They compared bilateral training, where both sides of the body are worked together, to unilateral training, which focuses on only one side. The study focused specifically on patients who had difficulty moving their distal upper extremities after a stroke.
The results showed that patients who used bilateral training saw greater improvements in motor function scores than those who used unilateral training. This was true for both general arm movement and the specific movements of the hand and wrist. These benefits were also noted in groups who began treatment at least four weeks after their stroke occurred.
Because this analysis included a small number of studies with different methods, the results should be viewed with caution. While the data suggests that training both arms together is more effective for recovery, it is not a guarantee for every patient. You should talk to your doctor or physical therapist to see if this specific type of exercise is right for your recovery plan.