2.3. Demographic Measures

To determine the profile of the sample, age, gender, height, weight, and gait speed were collected from all subjects. Gait speed was measured via the 10 Meter Walk Test, which has been found to be valid and reliable within healthy adults and adults with PD [18]. Additionally, those in the PD group completed the Parkinson’s Disease Questionnaire 39 [19,20] and were tested by a trained rater on the Movement Disorder Society’s Unified Parkinson’s Disease Rating Scale [19,21]. These tests and measures have been found to be valid and reliable in adults with PD to assess the impact of PD on quality of life and disease severity.