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Journal of Neurology

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06.04.2019 | Original Communication

15-White Dots APP-Coo-Test: a reliable touch-screen application for assessing upper limb movement impairment in patients with cerebellar ataxias

verfasst von: Giuseppe Arcuria, Christian Marcotulli, Claudio Galasso, Francesco Pierelli, Carlo Casali

Erschienen in: Journal of Neurology | Ausgabe 7/2019

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Abstract

Background

The use of objective measurements is essential to assess disease progression and to evaluate the effectiveness of rehabilitation protocols and clinical treatments.

Aim

The purpose of this study was to develop a touch-screen application, that we named 15-White Dots APP-Coo-Test (15-WDACT), able to carry out quantitative and objective measurements of the rapid and coordinated upper limb movements, typically impaired in patients with cerebellar ataxias (CA).

Methods

A total of 87 CA patients and 170 healthy subjects participated in this study. The subject was asked to touch with their index finger a white dot, appearing consecutively and randomly on the screen at different positions, for a total of 15 dots per session. The score is the execution time of a single session.

Results

15-WDACT measurements have highly correlated with the scores obtained with the Scale for the Assessment and Rating of Ataxia (SARA), with the Composite Cerebellar Functional Severity (CCFS) and with the measurements obtained using two validated evaluating systems, i.e., the Nine Hole Pegboard test (9HPT) and the Click Test. We also observed high internal consistency and an excellent intra-rater and test–retest reliability. We found a small Standard Error of Measurement (SEM) and an excellent Minimal Detectable Change (MDC), indicating that even small variations in the 15-WDACT measurements are to be associated with real changes in performance.

Conclusions

We have concluded that 15-WDACT is an easy, fast and reliable tool to assess the severity of the upper limb ataxia in patients with CA.

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Titel: 15-White Dots APP-Coo-Test: a reliable touch-screen application for assessing upper limb movement impairment in patients with cerebellar ataxias
verfasst von: Giuseppe Arcuria
Christian Marcotulli
Claudio Galasso
Francesco Pierelli
Carlo Casali
Publikationsdatum: 06.04.2019
Verlag: Springer Berlin Heidelberg
Erschienen in: Journal of Neurology / Ausgabe 7/2019
Print ISSN: 0340-5354
Elektronische ISSN: 1432-1459
DOI: https://doi.org/10.1007/s00415-019-09299-9

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15-White Dots APP-Coo-Test: a reliable touch-screen application for assessing upper limb movement impairment in patients with cerebellar ataxias