Relation of chair rising ability to activities of daily living and physical activity in Parkinson's disease.

Background: Many persons living with Parkinson's disease (PD) have difficulty rising from a chair. Impaired ability to perform the chair rise may be associated with low physical activity levels and reduced ability to perform activities of daily living (ADL).

Methods: Cross-sectional analysis was performed in 88 persons with PD to study the association of chair rising ability with ADL and physical activity.

Visualization Methods for Image Transformation Convolutional Neural Networks.

Convolutional neural networks (CNNs) are powerful machine learning models that have become the state of the art in several problems in the areas of computer vision and image processing. Nevertheless, the knowledge of why and how these models present an impressive performance is still limited. There are visualization techniques that can help us to understand the inner working of neural networks.

Predictive ability of functional tests for postural instability and gait difficulty in Parkinson's disease.

The objective of this study is to identify clinical determinants for postural instability and gait difficulty in persons with Parkinson's disease (PD). Ninety-one persons (68 males; 74.7%) with PD were studied.

Treadmill exercise tests in persons with Parkinson's disease: responses and disease severity.

Background And Aims: There is a paucity of information on cardiovascular responses with regard to the disease stage of Parkinson's disease (PD) when using an exercise test. Our purpose was to examine whether cardiovascular responses to the treadmill exercise test differed among persons with PD who have different disease severity.

Methods: Forty-five subjects with PD were studied (34 men and 11 women).