E.P. CHERNOVOLENKO, A.E. BARULIN  Volgograd State Medical University, Volgograd Contact details: Chernovolenko E.P. — Assistant Lecture of the Department of Neurology, Neurosurgery and Medical Genetics Address: 1 Pavshikh Bortsov Square, 400066 Volgograd, Russian Federation, e-mail: chernovolenkoe87@mail.ru Respiratory disorders (RD) is a premotor symptom of Parkinson’s disease (PD), manifested by functional restrictive disturbances in respiratory biomechanics. […]