Grooved Pegboard Predicates More of Cognitive Than Motor Involvement in Parkinson’s Disease

Author:

Bezdicek Ondrej1,Nikolai Tomáš1,Hoskovcová Martina1,Štochl Jan12,Brožová Hana1,Dušek Petr1,Zárubová Kateřina1,Jech Robert1,Růžička Evžen1

Affiliation:

1. Charles University in Prague, Prague, Czech Republic

2. University of Cambridge, Cambridge, UK

Abstract

The Grooved Pegboard Test (GPT) was conceived as a test of manual dexterity, upper-limb motor speed, and hand–eye coordination. The aim of our study was to test the componential structure of the GPT on an archetypal model of motor impairment, Parkinson’s disease (PD). A total of 45 PD patients (33 males, 12 females; age M = 67, range = 49-81; PD duration M = 10, range = 6-20 years; H/Y stage 2, range = 2-3) and 20 age- and education-matched controls (14 males, 6 females; age M = 66, range = 48-80) were included. All participants were investigated using the GPT, Short Falls Efficacy Scale–International, Frontal Assessment Battery (FAB), Montreal Cognitive Assessment (MoCA), and Non-Motor Symptom Scale. Patients were followed for 6 months, using fall diaries and monthly phone calls to define PD fallers (falls ≥ 1; n = 27) and PD nonfallers (falls = 0; n = 18). Using structural equation modeling, the GPT predicted performance on the MoCA ( p < .001), but not on the FAB ( p = .29). In conclusion, analysis of the structure of the GPT provided evidence about important cognitive features, in addition to the motor component of this test in PD.

Publisher

SAGE Publications

Subject

Applied Psychology,Clinical Psychology

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