Inclusion Criteria:  Age between 20-65 years old Diagnosis with schizophrenia or schizoaffective disorder by psychiatrists according to DSM5. Remaining the same antipsychotics and the symptom was stable for at least one month before the study. Be able to follow comments and have sufficient cognitive ability assessed by Mini-Mental State Examination score >24  Exclusion Criteria:  Substance abuse or other medical conditions that may affect movements. Using other non-antipsychotics that will affect movements in the same period.