Evidence map›Paper›PMID 33524665›Full record

ArticleGait & posture2021

Age-associated increase in postural variability relate to greater low-frequency center of pressure oscillations.

Stefan Delmas, Tatsunori Watanabe, Basma Yacoubi, Evangelos A Christou

Abstract read
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 8 papers.

0numbers the graph read from it
0cells of the map it votes in
8citing papers in PubMed
–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

8 citing papers in PubMed.

  1. Article
  2. Article
  3. Article
  4. Article
  5. Article
  6. Article
  7. Article
  8. Article
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

4 authors.

Stefan DelmasDepartment of Applied Physiology and Kinesiology, University of Florida, Gainesville, FL 32611, USA.
Tatsunori WatanabeDepartment of Applied Physiology and Kinesiology, University of Florida, Gainesville, FL 32611, USA; Department of Sensorimotor Neuroscience, Hiroshima University Graduate School of Biomedical and Health Sciences, Hiroshima, 734-8553 Japan.
Basma YacoubiDepartment of Applied Physiology and Kinesiology, University of Florida, Gainesville, FL 32611, USA.
Evangelos A ChristouDepartment of Applied Physiology and Kinesiology, University of Florida, Gainesville, FL 32611, USA. Electronic address: eachristou@ufl.edu.

Funding

Training In Rehabilitation and Neuromuscular PlasticityT32HD043730 · NICHD · UNIVERSITY OF FLORIDA · PI DAVID D FULLER · 2003 to 2026
$5.3M
NICHD NIH HHS T32 HD043730
6 · The paper itself

Abstract

backgroundPostural control is impaired in older adults, as evidenced from greater variability of the center of pressure (COP) during postural tasks. Although COP variability associates with low-frequency COP oscillations (<1 Hz) in young adults, it remains unknown if the age-associated increase in COP variability relates to greater low-frequency COP oscillations. RESEARCH QUESTION: Do low-frequency oscillations contribute to greater postural sway (center of pressure (COP) variability) in older adults when attempting to voluntarily maintain posture in a forward leaning position compared to young adults?

methodsSeven young (25.7 ± 4.8) and seven older (71.0 ± 7.0) adults performed a postural lean forward task and attempted to match a COP target in the anterior-posterior direction as steady as possible. We quantified the COP variability as the standard deviation (SD) of COP displacements in the anterior-posterior and medial-lateral directions and quantified the frequency modulation of COP as the power in COP displacement spectra from 0-1 Hz.

resultsWe found that older adults had significantly greater anterior-posterior SD of COP (p = 0.027) and power below 0.5 Hz (p = 0.048) than young adults, but power from 0.5-1 Hz was similar (p = 0.083). In contrast, the medial-lateral SD of COP (p = 0.5) and power from 0-1 Hz (p = 0.228) was similar for the two age groups. For both the anterior-posterior and medial-lateral direction, the SD of COP was related to low frequency oscillations below 0.5 Hz. SIGNIFICANCE: For the first time, we show that the age-associated increase in postural variability relates to greater COP oscillations below 0.5 Hz.

Indexed as

AdultAgedAge FactorsAgingCase-Control StudiesFemaleHumansMalePostural BalancePostureYoung Adultanterior-posteriorCOPlow-frequency oscillationsmedial-lateralVariability

Identifiers

PMID33524665
PMCPMC8084964

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.