Parkinson disease (PD) is the most common progressive, multisystemic and neurodegenerative disease after Alzheimer disease. Its prevalence increases with age and rises sharply around the age of 65 . The main pathological change is the progressive degeneration of neurons in the substantia nigra pars compacta, one of the nuclei forming then basal ganglia . Currently, pharmacological treatments are used primarily for symptomatic control and provide only short-term benefits before the disease progresses to a severe stage. Physical activity and exercise can provide cost-effective and universally available aids for current PH treatments. Therefore, it is imperative to examine the effects of exercise on PD. Evidence shows that exercise training is an effective approach to manage symptoms in PD . Physiotherapy interventions in PD aim to maximize functional ability and minimize secondary complications within the scope of patient education and rehabilitation support, and to control unwanted side effects of medical treatment and possible motor fluctuations . Patients who applied to the Neurology Clinic of Bakirkoy Psychiatric and Neurological Diseases Hospital and were diagnosed with idiopathic PH and volunteered to participate in the study will be included in our study. Patients with PD who meet the study inclusion criteria and are between the ages of 50-85 years according to Modified Hoehn \& Yahr will be randomly assigned to the intervention and control groups. Patients with PH participating in the study will be randomly assigned to the intervention (Online) and control (Offline) groups. Patients in both groups will participate in a telerehabilitation-based exercise program for 45-60 minutes a day, 3 days a week, for 6 weeks. The intensity of exercise training will be planned to progress gradually every two weeks. In the following weeks, the number of repetitions, the number of sets and the difficulty levels of the exercises will be increased compared to the beginning and the exercises will be continued. Trainings for intervention group patients will be performed by researchers under the supervision of a physiotherapist through an online platform on breathing, balance and strengthening exercises suitable for the patients. For the patients in the control group, the same exercises will be recorded on video every two weeks and the exercise program of each week will be sent to the patient. The patient will be asked to do the exercises accompanied by video. The general evaluation form of the patients and their demographic information, disease history, family history, contact information, education level, and medications will be questioned. Modified Hoehn-Yahr Score and Unified Parkinson Disease Rating Scale (UPDRS) will be used to evaluate disease severity and disability level.Respiratory muscle strength of the patients will be measured using a portable, electronic intraoral pressure measuring device (Carefusion Micromedical, Micro RPM, USA). Peak cough flow will be measured with PEF (peak flow meter).Balance will be evaluated with the Tinetti Balance Scale and the Timed Get Up and Go Test. The 10 m walking test will be used to evaluate walking performance. Participation in activities of daily living and evaluation of patients functional activity status will be performed with the Parkinson Activity Scale . The sample size of the study was calculated with the G\*Power 3.1 power analysis program. Considering the effect size of the Timed Up and Go Test, one of the outcome measurements,1.48, the sample size required for 99% working power was calculated at a 95% confidence interval. It was determined that the number of cases to be included for both groups should be at least 19. In order to protect the working power of the cases against the possibility of dropping out of the study, a 10% drop rate will be added to each group and 21 cases will be included . Statistical analysis of the data obtained from the study will be made using the statistical program \"Statistical Package for Social Sciences\" (SPSS) Version 22.0 (SPSS inc., Chicago, IL, USA). Whether the data are suitable for normal distribution will be determined by the Shapiro-Wilk Test. According to the analysis results of this test, parametric tests will be applied in the analysis of the data that fit the normal distribution, and non-parametric tests will be used in the analysis of the data that do not fit the normal distribution. In the statistical analysis of the study, the evaluated variables will be defined with mean (Mean), standard deviation (SD), confidence interval (CI) and percentage values. Independent Samples T-test for quantitative/numerical data and Chi-squared test for qualitative/non-numerical data will be used to compare the demographic and clinical characteristics of the groups that make up the study. Comparison of the pre-treatment and post-treatment values of the groups will be made with Wilcoxon Signed Rank test or Paired Samples T-test. Comparison of data between groups will be done with Mann Whitney U test or Independent Samples T-test. Effect size of changes within groups, difference between measurements.