Bradykinesia and gait disturbances are pointed out as limiting motor signs that affect the quality of life of individuals with Parkinson's Disease (PD). The literature shows a tendency to assess these symptoms, however, despite much of what has been researched, there are still problems to be solved and room for innovation, since we have not yet reached the stage of consensus on whether it is better to have a single index for each parkinsonian symptom or a set of variables. Therefore, the aim of this study is to carry out a narrative review to identify which features are normally extracted in studies that assess bradykinesia and gait disorders in PD. A literature search was performed using English terms from January to June 2021. The databases accessed were: PubMed, Medline, IEEE, Lilacs and Cochrane. After reading title and abstract, the 20 relevant papers were selected a presented in this study. According to the authors the most important characteristics are slowness, stride speed, amplitude index, mean of absolute value, coefficient of variation, normalized jerk cost, and freeze index. Even though bradykinesia and gait disturbances are different motor signs from PD, the results show that the characteristics that should be extracted from the inertial sensors are similar.