Tai Chi training
OtherAs for Tai Chi training, standardized Tai Chi was taught by professional Tai Chi coaches from Sino Taiji of Fuxing International in classes: Qishi ("Starting Posture"), Shangsanbu ("Twist Step"), Yema Fenzong("Part the Wild Horse's Mane on Both Side"), Jingang Daozhui ("Buddha's warrior attendant pounds mortar"), Shoushi ("Closing Posture"). Patients participated in this class were trained, twice a week, 60 min per time. PD patients whose attendance rate less than 75% were excluded.