Introduction: Parkinson's disease is the second most common chronic neurodegenerative disorder, currently affecting approximately 1% of the world's population. Some forecasts indicate a large increase in this disease in the coming decades. Gait disturbance, characterized by short, asymmetric steps and slow speed, is the main motor symptom in Parkinson's disease performance. Most of the motor symptoms, such as tremors, rigidity, bradykinesia and freezing of movement, is result from a decrease in dopamine in the basal ganglia, including the purchase of dopamine cells in the basal nucleus. Nearly 40% of patients with Parkinson's disease also experience cognitive decline, which is associated with reduced social interaction, reduced participation in activities of daily living, and increased risk of death. Purpose: The aim of this diploma thesis is to determine the impact of dual-task physiotherapy interventions on the movement ability in patients with Parkinson's disease by reviewing the literature. Methods: Studies were selected if they met the following inclusion criteria: articles with freely available full text, studies published between 2015 and 2022, randomized controlled trials, rcts and the following key word combinations: "Parkinson's disease", "dual task", "physiotherapeutic interventions" and "movement ability'. Results: Five studies were included in the literature review that compared different physiotherapy interventions with dual tasks. In all five selected studies, subjects were assessed at the beginning and after the end of the study. All of them found a statistically significant improvement compared to the first assessment in the observed gait parameters. Gait parameters included: gait speed, stride length and double stance time with single and dual tasks. Discussion and conclusion: Current research suggests that incorporating dual tasks into physiotherapy helps to reduce deficits experienced by Parkinson's disease patients in activities of daily living. However, further clinical investigations are needed to confirm the current findings. In the following studies, it would be necessary to include a larger number of subjects, to perform longer exercise programs, to divide Parkinson's disease patients into groups based on the severity of the disease, to use uniform measurement tools to evaluate the results, and to monitor the long-term effects of interventions.
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