Choral Singing for Patients With Parkinson's

Study Design: Multi-centered, open, prospective, three-arm, randomized, controlled parallel-group study; Study Participants: Adult patients with Parkinson's disease in Salzburg (and surroundings) and Vienna (and surroundings); Planned Sample Size: Experimental Group 1 (singing in a group/active): 30 persons; Experimental group 2 (receptive music/auditive): 30 persons; Control group (treatment as usual condition): 30 persons; Planned Duration of Study: Recruitment: spring 2022, study duration: spring 2022 to autumn 2022, evaluation phase and publication: autumn-summer 2022/2023; Primary Objectives: Reduction of depression, anxiety and physiological stress; Measurement of the Endpoints: Hospital Anxiety and Depression Scale - German Version (HADS-D), Biochemical determination: cortisol and alpha-amylase (concentration measurement in saliva).