Evidence map›Paper›PMID 33434235›Full record

ArticlePloS one2021

Detection of postural control in early Parkinson's disease: Clinical testing vs. modulation of center of pressure.

Anna Kamieniarz, Justyna Michalska, Wojciech Marszałek, Magdalena Stania, Kajetan J Słomka, Agnieszka Gorzkowska, Grzegorz Juras, Michael S Okun, Evangelos A Christou

Abstract read
In one paragraph

Article in PloS one, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 30 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
30citing papers in PubMed, 1 pooled it
–field-weighted citation impact
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

30 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
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  20. The Use of the Static Posturography to Assess Balance Performance in a Parkinson's Disease Population.International journal of environmental research and public health · 2023
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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

9 authors.

Anna KamieniarzInstitute of Sport Sciences, Academy of Physical Education, Katowice, Poland.ORCID 0000-0002-2678-8436
Justyna MichalskaInstitute of Sport Sciences, Academy of Physical Education, Katowice, Poland.
Wojciech MarszałekInstitute of Sport Sciences, Academy of Physical Education, Katowice, Poland.ORCID 0000-0003-3780-1090
Magdalena StaniaInstitute of Sport Sciences, Academy of Physical Education, Katowice, Poland.
Kajetan J SłomkaInstitute of Sport Sciences, Academy of Physical Education, Katowice, Poland.ORCID 0000-0001-8447-4251
Agnieszka GorzkowskaDepartment of Neurorehabilitation, Faculty of Medical Sciences in Katowice, Medical University of Silesia, Katowice, Poland.
Grzegorz JurasInstitute of Sport Sciences, Academy of Physical Education, Katowice, Poland.ORCID 0000-0001-8081-8854
Michael S OkunDepartment of Neurology, Norman Fixel Institute for Neurological Diseases, University of Florida, Gainesville, FL, United States of America.ORCID 0000-0002-6247-9358
Evangelos A ChristouDepartment of Neurology, Norman Fixel Institute for Neurological Diseases, University of Florida, Gainesville, FL, United States of America.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

introductionLittle is known about the early stage balance changes in PD. Many clinicians assume that there are no postural issues in early PD because of failure to identify them on bedside and clinical testing. Here, we quantify balance changes in early and moderate stage PD and compared these values to healthy controls (HC) using clinical assessments of balance and posturography.

methodsWe compared 15 HC with 15 early PD (PD-II; Hoehn and Yahr stage II) and 15 moderate PD (PD-III; H&Y stage III). Participants performed various clinical tests of balance and a standing postural task on a force platform. We quantified the spatiotemporal parameters of the center of pressure (COP), the sample entropy and power spectral density (PSD) of the COP.

resultsThe PSD of the COP differentiated PD-II from HC from 0-0.5 Hz and PD-II from PD-III from 0.5-1 Hz. Specifically, PD-II and PD-III manifested greater power than HC from 0-0.5 Hz, whereas PD-III exhibited greater power than PD-II and HC from 0.5-1.0 Hz (p<0.05). However, there were no significant differences between PD-II and HC in all clinical tests and in spatiotemporal parameters of the COP (p>0.05). Although the sample entropy was significantly lower in the PD groups (p<0.05), entropy failed to differentiate PD-II from PD-III.

conclusionThe low-frequency modulation of the COP in this small cohort differentiated early PD from HC and from moderate PD. Clinicians should be aware that there are early balance deficits in PD. A larger sample size is needed to confirm these findings.

Indexed as

Postural BalanceStanding PositionAgedFemaleHumansMaleMiddle AgedParkinson DiseasePressureSpatio-Temporal Analysis

Identifiers

PMID33434235
PMCPMC7802937

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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.