Objective: Despite research demonstrating cognitive impairment in early Parkinson Disease (PD; e.g., Rodriguez-Oroz, Jahanshi, Krack, Litvan, Macias, Bezard, & Obeso, 2009), several authors have argued these symptoms continue to be clinically underappreciated. This research aimed to investigate the relationship between motor and cognitive impairment in patients diagnosed with PD. We predicted moderate positive correlations between the Dementia Rating Scale-2 (DRS-2; Jurica, Leitten, & Mattis, 2001) and the Chair Stand Test (CST; Jones & Rikli, 1999), as well as the Berg Balance Scale (BBS; Berg, Wood-Dauphinee, Williams, Maki, 1992). A moderate negative correlation was anticipated between the DRS-2 and the Timed Up and Go (TUG; Podsiadlo, & Richardson, 1991). All hypotheses anticipate poorer motor performance associated with greater cognitive impairment. Method: This study follows a correlational design. All participants (339 total, 117 female) met diagnostic criteria for PD and came from a PD Interdisciplinary Clinic at a Midwestern Academic Medical Center. The primary study variables included the DRS-2 Age- and Education-Corrected MOANS [Mayo's Older Americans Normative Studies] Score (AEMSS), CST Repetitions, TUG Total, and Total BBS. Results: Results revealed positive significant correlations between the DRS-2 and CST (r = .25, p = .036) and the DRS-2 and BBS (r = .31, p = .046). A non-significant correlation was found between the DRS-2 and TUG (r = −.19, p = .106). Conclusion(s): Results revealed significant moderate correlations between impaired cognitive and motor performance in patients with PD. Diagnostic and clinical implications will be discussed.
Cognitive and Motor Impairment in Patients with Parkinson Disease
Arch Clin Neuropsychol (2015) 30 (6): 491.
25 August 2015
D Charek, D Marino, M Haines; A-15
Cognitive and Motor Impairment in Patients with Parkinson Disease. Arch Clin Neuropsychol 2015; 30 (6): 491. doi: 10.1093/arclin/acv047.15
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The Contribution of Apathy and Increased Learning Trials to Risky Decision-Making in Parkinson's Disease