 The purpose of this project is to examine and compare the motor learning process, immediate and long-term effects of combined Botulinum toxin type A BoNT-A injection between condensed and distributed robot-assisted training RT programs in patients with spastic hemiplegic stroke. Spasticity, a common impairment after stroke, has a profound impact on activity and participation for patients. According to the result of the investigators ongoing study, the investigators found BoNT-A injection combined with robot-assisted training is recommended to enhance functional recovery for patients with spastic hemiplegic stroke. However, the optimal program as considering the RT frequency is unknown. 