Evidence map›Paper›PMID 29510323›Full record

ArticleGait & posture2018

Aging effects on leg joint variability during walking with balance perturbations.

Mu Qiao, Jody A Feld, Jason R Franz

Open access · greenAbstract read
In one paragraph

Article in Gait & posture, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 25 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
25citing papers in PubMed, 1 pooled it
9.4field-weighted citation impact, top 2% 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

25 citing papers in PubMed, 1 synthesis or guideline pooled it, 42 citations in OpenAlex.

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  18. The effects of cognitive load and optical flow on antagonist leg muscle coactivation during walking for young and older adults.Journal of electromyography and kinesiology : official journal of the International Society of Electrophysiological Kinesiology · 2019
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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

3 authors at 1 institution in 1 country.

Mu QiaoJoint Department of Biomedical Engineering, University of North Carolina at Chapel Hill and North Carolina State University, United States.
Jody A FeldHuman Movement Science Curriculum, University of North Carolina at Chapel Hill, United States.
Jason R FranzJoint Department of Biomedical Engineering, University of North Carolina at Chapel Hill and North Carolina State University, United States. Electronic address: jrfranz@email.unc.edu.
University of North Carolina at Chapel Hill · US

Funding

Re-Entry Supplement: Investigation of Oral Microbial Enzymes for the Detection and Treatment of Periodontal DiseaseUL1TR002489 · NCATS · UNIV OF NORTH CAROLINA CHAPEL HILL · PI BUSE, JOHN BERNARD, SHAHEEN, NICHOLAS J · 2018 to 2022
$48.6M
North Carolina Translational & Clinical Sciences Institute (NC TraCS)UL1TR001111 · NCATS · UNIV OF NORTH CAROLINA CHAPEL HILL · PI BUSE, JOHN BERNARD, CAREY, TIMOTHY S · 2013 to 2017
$43.9M
The Sensorimotor Locus of Balance Control in Elderly GaitR56AG054797 · NIA · UNIV OF NORTH CAROLINA CHAPEL HILL · PI FRANZ, JASON R · 2017 to 2017
$228k
NCATS NIH HHS UL1 TR001111NCATS NIH HHS UL1 TR002489NIA NIH HHS R56 AG054797
6 · The paper itself

Abstract

backgroundOlder adults are more susceptible to balance perturbations during walking than young adults. However, we lack an individual joint-level understanding of how aging affects the neuromechanical strategies used to accommodate balance perturbations. RESEARCH QUESTION: We investigated gait phase-dependence in and aging effects on leg joint kinematic variability during walking with balance perturbations. We hypothesized that leg joint variability would: 1) vary across the gait cycle and 2) increase with balance perturbations. We also hypothesized that perturbation effects on leg joint kinematic variability would be larger and more pervasive in older versus young adults.

methodsWe collected leg joint kinematics in young and older adults walking with and without mediolateral optical flow perturbations of different amplitudes.

resultsWe first found that leg joint variability during walking is gait phase-dependent, with step-to-step adjustments occurring predominantly during push-off and early swing. Second, young adults accommodated perturbations almost exclusively by increasing coronal plane hip joint variability, likely to adjust step width. Third, perturbations elicited larger and more pervasive increases in all joint kinematic outcome measures in older adults. Finally, we also provide insight into which joints contribute more to foot placement variability in walking, adding that variability in sagittal plane knee and coronal plane hip joint angles contributed most to that in step length and step width, respectively. SIGNIFICANCE: Taken together, our findings may be highly relevant to identifying specific joint-level therapeutic targets to mitigate balance impairment in our aging population.

Indexed as

AdultAgedAgingAnkle JointFemaleGaitHealthy VolunteersHip JointHumansKnee JointMalePostural BalanceRange of Motion, ArticularWalkingYoung AdultElderlyFallsGaitKinematicsStabilityVisual feedback

Identifiers

PMID29510323
PMCPMC6069536
OpenAlexW2793421371

What OpenQuestion holds

Textmetadata
LicenceTDM
Read underepoch 390

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.