Evidence map›Paper›PMID 34454453›Full record

ArticleBMC neurology2021

Validation of quantitative gait analysis systems for Parkinson's disease for use in supervised and unsupervised environments.

Sara Alberto, Sílvia Cabral, João Proença, Filipa Pona-Ferreira, Mariana Leitão, Raquel Bouça-Machado, Linda Azevedo Kauppila, António P Veloso, Rui M Costa, Joaquim J Ferreira and 1 more

Open access · goldAbstract read
In one paragraph

Article in BMC neurology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
15citing papers in PubMed, 1 pooled it
6.1field-weighted citation impact, top 3% of its field
1 · What the graph read from it

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.

2 · The registry

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.

3 · Its place in the literature

Who cites it

15 citing papers in PubMed, 1 synthesis or guideline pooled it, 24 citations in OpenAlex.

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  13. Distinct gait dimensions are modulated by physical activity in Parkinson's disease patients.Journal of neural transmission (Vienna, Austria : 1996) · 2022
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

11 authors at 4 institutions in 2 countries.

Sara AlbertoKinetikos, Coimbra, Portugal.
Sílvia CabralLBMF, CIPER, Faculdade de Motricidade Humana, Universidade de Lisboa, Cruz Quebrada, Dafundo, Portugal.
João ProençaKinetikos, Coimbra, Portugal.
Filipa Pona-FerreiraCNS - Campus Neurológico Sénior, Torres Vedras, Portugal.
Mariana LeitãoCNS - Campus Neurológico Sénior, Torres Vedras, Portugal.
Raquel Bouça-MachadoCNS - Campus Neurológico Sénior, Torres Vedras, Portugal.
Linda Azevedo KauppilaDepartment of Neurosciences and Mental Health, Neurology, Hospital de Santa Maria, Centro Hospitalar Universitário Lisboa Norte, Lisbon, Portugal.
António P VelosoLBMF, CIPER, Faculdade de Motricidade Humana, Universidade de Lisboa, Cruz Quebrada, Dafundo, Portugal.
Rui M CostaChampalimaud Research, Champalimaud Centre for the Unknown, Lisbon, Portugal.
Joaquim J FerreiraCNS - Campus Neurológico Sénior, Torres Vedras, Portugal.
Ricardo MatiasChampalimaud Research, Champalimaud Centre for the Unknown, Lisbon, Portugal. rmatias@me.com.ORCID http://orcid.org/0000-0003-1785-2640
Instituto Superior Politécnico do Oeste · PTUniversity of Lisbon · PTChampalimaud Foundation · PTHospital de Santa Maria · PT

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundGait impairments are among the most common and impactful symptoms of Parkinson's disease (PD). Recent technological advances aim to quantify these impairments using low-cost wearable systems for use in either supervised clinical consultations or long-term unsupervised monitoring of gait in ecological environments. However, very few of these wearable systems have been validated comparatively to a criterion of established validity.

objectiveWe developed two movement analysis solutions (3D full-body kinematics based on inertial sensors, and a smartphone application) in which validity was assessed versus the optoelectronic criterion in a population of PD patients.

methodsNineteen subjects with PD (7 female) participated in the study (age: 62 ± 12.27 years; disease duration: 6.39 ± 3.70 years; HY: 2 ± 0.23). Each participant underwent a gait analysis whilst barefoot, at a self-selected speed, for a distance of 3 times 10 m in a straight line, assessed simultaneously with all three systems.

resultsOur results show excellent agreement between either solution and the optoelectronic criterion. Both systems differentiate between PD patients and healthy controls, and between PD patients in ON or OFF medication states (normal difference distributions pooled from published research in PD patients in ON and OFF states that included an age-matched healthy control group). Fair to high waveform similarity and mean absolute errors below the mean relative orientation accuracy of the equipment were found when comparing the angular kinematics between the full-body inertial sensor-based system and the optoelectronic criterion.

conclusionsWe conclude that the presented solutions produce accurate results and can capture clinically relevant parameters using commodity wearable sensors or a simple smartphone. This validation will hopefully enable the adoption of these systems for supervised and unsupervised gait analysis in clinical practice and clinical trials.

Indexed as

Gait Disorders, NeurologicParkinson DiseaseBiomechanical PhenomenaFemaleGaitGait AnalysisHumansGait analysisKinematicsParkinson’s diseasePathological gaitSmartphoneWearable devices

Identifiers

PMID34454453
PMCPMC8403450
OpenAlexW3197172566

What OpenQuestion holds

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LicenceCC BY
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Registered trials

None linked

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.