Construct validity of instrumented gait assessments in hospital and daily life mobility in patients with Parkinson's disease and atypical Parkinson's syndromes: an exploratory study

Teckenburg IB, Sidoroff V, Moradi H, Sapienza S, Prigent G, Krismer F, Benninger D, Eskofier B, Regensburger M, Ibrahim A, Klucken J, Aminian K, Wenning G, Raccagni C, Winkler J, Gaßner H (2026)

Publication Type: Journal article

Publication year: 2026

Journal

Journal of Neurology Springer Verlag (Germany)

Book Volume: 273

Pages Range: 122-

Journal Issue: 2

DOI: 10.1007/s00415-026-13652-0

Abstract

BACKGROUND AND AIM: Parkinsonian disorders are hallmarked by gait and balance impairments. Atypical parkinsonian disorders (APD) develop postural instability with falls and gait disorders early on. Sensor-based gait recordings provide objective data in hospital and everyday life, improving mobility assessment accuracy. However, the impact of duration and distance of instrumented assessments on construct validity remains unclear. This exploratory study aims to evaluate the construct validity of gait assessments compared with clinical, functional, and patient-reported scores. METHODS: The multi-centered Mobility_APP study recruited 43 PD and 49 APD patients. Among others, the Berg Balance Scale (BBS) and the postural instability and gait difficulty score (PIGD) were collected. Sensor-based gait parameters were captured during standardized 2 × 10 m and 2-min walk tests (2MWT) in the hospital and for 1 day of physical activity monitoring (PAM) at home. PAM was categorized by short (10-30 s), medium (30-60 s), and long (≥ 60 s) walking bouts (WB). Spearman correlations were applied to investigate associations between scores. RESULTS: Mean gait velocity (GV) and stride length correlated more strongly with functional, clinical, and patient-reported scores in 2MWT than in 2 × 10 m. Additionally, the GV variability in the 2MWT correlated with BBS and PIGD (r = │0.3-0.7│), but was less prominent in 2 × 10 m (r = │0.0-0.5│). In PAM, GV of long WB correlated more strongly with the PIGD (r = │0.5-0.6│) than short WB (r = │0.2-0.4│). CONCLUSION: The 2MWT tended to show the highest construct validity. PAM offered complementary but weaker correlations, highlighting that PAM provides novel insights into daily life mobility of APD patients.

Authors with CRIS profile

Isabelle Berenice Teckenburg Department of Molecular Neurology Hamid Moradi Machine Learning and Data Analytics Lab Björn Eskofier Department Artificial Intelligence in Biomedical Engineering (AIBE) Martin Regensburger Department of Molecular Neurology Alzhraa Ibrahim Department of Molecular Neurology Jochen Klucken Department of Molecular Neurology Jürgen Winkler Professur für Molekulare Neurologie Heiko Gaßner Department of Molecular Neurology

Involved external institutions

Medizinische Universität Innsbruck AT Austria (AT) University of Luxembourg LU Luxembourg (LU) École Polytechnique Fédérale de Lausanne (EPFL) CH Switzerland (CH) Lausanne University Hospital / Centre hospitalier universitaire vaudois (CHUV) CH Switzerland (CH) Zentralkrankenhaus Bozen IT Italy (IT)

How to cite

APA:

Teckenburg, I.B., Sidoroff, V., Moradi, H., Sapienza, S., Prigent, G., Krismer, F.,... Gaßner, H. (2026). Construct validity of instrumented gait assessments in hospital and daily life mobility in patients with Parkinson's disease and atypical Parkinson's syndromes: an exploratory study. Journal of Neurology, 273(2), 122-. https://doi.org/10.1007/s00415-026-13652-0

MLA:

Teckenburg, Isabelle Berenice, et al. "Construct validity of instrumented gait assessments in hospital and daily life mobility in patients with Parkinson's disease and atypical Parkinson's syndromes: an exploratory study." Journal of Neurology 273.2 (2026): 122-.

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