ArticleMovement disorders : official journal of the Movement Disorder Society2025
Digital Outcomes of Upper Limb Ataxia Capture Meaningful Longitudinal Change and Treatment Response.
Article in Movement disorders : official journal of the Movement Disorder Society, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
3 citing papers in PubMed.
- Time-Dependent Enhancement of Motor Dexterity and Cerebellar Function via Premotor-Cerebellar Associative Stimulation.The European journal of neuroscience · 2026Article
- Digital Motor Outcomes Capture Upper Limb and Mild Stage Impairment in Hereditary Spastic Paraplegia.Neurology and therapy · 2026Article
- iPatax: a Tablet-based Tool for Quantitative Assessment of Cerebellar Ataxia.Cerebellum (London, England) · 2026Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
8 authors.
Funding
Abstract
backgroundDigital-motor outcomes promise better responsiveness than clinician-reported outcomes in ataxia trials. However, their patient meaningfulness and sensitivity to change remain to be demonstrated, particularly in the upper limb domain.
objectivesValidation of quantitative motor (Q-Motor) assessment for upper limb ataxia against patient-reported outcomes and regarding sensitivity to both longitudinal and treatment-induced change, the latter in n-of-1 treatment settings.
methodsSingle-center longitudinal assessment of finger tapping, diadochokinesia, grip-lift, spiral drawing, and target reaching in (1) 36 cross-genotype ataxia patients and 20 controls, validating digital measures for correlations with patient-reported outcome measure (PROM)-ataxia, 2-weeks test-retest reliability, and sensitivity to change within a trial-relevant 1-year follow-up, anchored in Patient Global Impression of Change (PGI-C); and (2) two patients with spinocerebellar ataxia type 27B (SCA27B) on versus off treatment with 4-aminopyridine.
resultsTwenty-four digital measures correlated with the PROM-ataxia upper-limb composite (|ρ| = 0.4-0.7) and had excellent test-retest reliability (ICC = 0.91-0.99). Correlations to individual PROM-ataxia items were specific for functional impairment the respective measure was hypothesized to capture. Speed of finger tapping and diadochokinesia, and smoothness of target reaching (spectral arc length of movement in three dimensions [SPARC
conclusionDigital upper limb measures capture patient-meaningful 1-year longitudinal and treatment-induced change, and are therefore promising outcomes for upcoming ataxia trials. © 2025 The Author(s). Movement Disorders published by Wiley Periodicals LLC on behalf of International Parkinson and Movement Disorder Society.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.