Evidence map›Paper›PMID 33421952›Full record

ArticleGait & posture2021

The construct and concurrent validity of brief standing sway assessments in children with and without cerebral palsy.

James B Tracy, Drew A Petersen, Benjamin C Conner, Justus G Matteson, De'Shjuan G Triplett, Henry G Wright, Christopher M Modlesky, Freeman Miller, Curtis L Johnson, Jeremy R Crenshaw

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PubMed Full text at PMC Publisher
In one paragraph

Article in Gait & posture, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.

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0cells of the map it votes in
2citing papers in PubMed
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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.

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3 · Its place in the literature

Who cites it

2 citing papers in PubMed.

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4 · The record

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5 · Who and what money

Authors and funding

10 authors.

James B TracyDepartment of Kinesiology and Applied Physiology, University of Delaware, Newark, DE, USA.
Drew A PetersenDepartment of Kinesiology and Applied Physiology, University of Delaware, Newark, DE, USA; Department of Physical Therapy, Drexel University, Philadelphia, PA, USA.
Benjamin C ConnerDepartment of Kinesiology and Applied Physiology, University of Delaware, Newark, DE, USA; College of Medicine - Phoenix, University of Arizona, Phoenix, AZ, USA.
Justus G MattesonDepartment of Kinesiology and Applied Physiology, University of Delaware, Newark, DE, USA.
De'Shjuan G TriplettDepartment of Kinesiology and Applied Physiology, University of Delaware, Newark, DE, USA.
Henry G WrightDepartment of Kinesiology and Applied Physiology, University of Delaware, Newark, DE, USA.
Christopher M ModleskyDepartment of Kinesiology, University of Georgia, Athens, GA, USA.
Freeman MillerDepartment of Kinesiology and Applied Physiology, University of Delaware, Newark, DE, USA; Department of Orthopedics, Nemours A.I. duPont Hospital for Children, Wilmington, DE, USA.
Curtis L JohnsonDepartment of Biomedical Engineering, University of Delaware, Newark, DE, USA.
Jeremy R CrenshawDepartment of Kinesiology and Applied Physiology, University of Delaware, Newark, DE, USA. Electronic address: crenshaw@udel.edu.

Funding

Predictive Modeling & Optimal Control Framework for Model-Based Epidemic Response in DelawareP20GM103446 · NIGMS · UNIVERSITY OF DELAWARE · PI Anjana Narayan Bhat · 2012 to 2026
$67.2M
Pilot Project ProgramP30GM103333 · NIGMS · UNIVERSITY OF DELAWARE · PI BUCHANAN, THOMAS S · 2012 to 2016
$5.7M
Effect of vibration on muscle properties, physical activity and balance in children with cerebral palsyR01HD090126 · NICHD · UNIVERSITY OF GEORGIA · PI MODLESKY, CHRISTOPHER M · 2017 to 2022
$3.0M
NICHD NIH HHS R01 HD090126NIGMS NIH HHS P20 GM103446NIGMS NIH HHS P30 GM103333
6 · The paper itself

Abstract

backgroundStanding postural sway is often quantified from center of pressure trajectories. During assessments of longer durations, children may fidget, thus limiting the feasibility and validity of sway recordings. RESEARCH QUESTION: Do postural sway sample durations less than 30 s maintain construct and concurrent validity?

methodsIn this case-control, observational study, we measured postural sway in 41 children (age 5-12 years, 23 typically developing (TD); 18 with spastic cerebral palsy (CP), 13 diplegic and 5 hemiplegic, 11 GMFCS level I and 7 level II) for 30-second eyes-opened and eyes-closed conditions. From a single recording, 5-second incremental durations of 5-30 s were considered in this analysis. We quantified anteroposterior, mediolateral, and transverse-plane sway using seven time-domain variables: root-mean-square error, total excursion, mean frequency, mean distance, sway area, and 95 % confidence circle and ellipse areas. Variables were calculated in eyes-opened and eyes-closed conditions, as well as the ratio of the two. Construct validity was evaluated by the persistence of large effect sizes (Glass's Δ ≥ 0.80) between CP and TD participants at shorter durations than 30 s. Concurrent validity was evaluated by the correlations of shorter duration measures to the 30 s measure.

resultsSeven sway measures had large between-group effects (Glass's Δ ≥ 1.02) for the 30 s measure that persisted (Glass's Δ ≥ 0.81) at shorter durations (5-25 s) and also maintained concurrent validity (r ≥ 0.83). Six of these seven measures were taken in the eyes-closed condition, and all seven measures were in the mediolateral direction or transverse plane. SIGNIFICANCE: Our analysis suggests that sway durations less than 30 s can uphold construct and concurrent validity. These measures were primarily in the eyes-closed conditions and mediolateral direction. These results are a promising indicator that shorter-duration sway measures may be of utility when fidgeting prevents longer recordings.

Indexed as

Standing PositionCase-Control StudiesCerebral PalsyChildChild, PreschoolFemaleHumansMalePostural BalanceReproducibility of ResultsBalanceCenter of pressureFidgetingPostural controlStabilityValidity

Identifiers

PMID33421952
PMCPMC7902400

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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.