Evidence map›Paper›PMID 31814337›Full record

ArticlePhysiological reports2019

Achilles tendon shear wave speed tracks the dynamic modulation of standing balance.

Samuel A Acuña, Anahid Ebrahimi, Robin L Pomeroy, Jack A Martin, Darryl G Thelen

Open access · goldAbstract read
In one paragraph

Article in Physiological reports, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
5citing papers in PubMed, 1 pooled it
3.0field-weighted citation impact, top 8% 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

5 citing papers in PubMed, 1 synthesis or guideline pooled it, 12 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Article
  4. Atypical triceps surae force and work patterns underlying gait in children with cerebral palsy.Journal of orthopaedic research : official publication of the Orthopaedic Research Society · 2022
    Article
  5. 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

5 authors at 1 institution in 1 country.

Samuel A AcuñaDepartment of Physical Medicine & Rehabilitation, University of Texas Southwestern Medical Center, Dallas, TX, USA.ORCID 0000-0002-0428-5416
Anahid EbrahimiDepartment of Mechanical Engineering, University of Wisconsin-Madison, Madison, WI, USA.ORCID 0000-0002-2801-2527
Robin L PomeroyDepartment of Mechanical Engineering, University of Wisconsin-Madison, Madison, WI, USA.
Jack A MartinDepartment of Mechanical Engineering, University of Wisconsin-Madison, Madison, WI, USA.
Darryl G ThelenDepartment of Mechanical Engineering, University of Wisconsin-Madison, Madison, WI, USA.ORCID 0000-0002-7873-2477
University of Wisconsin–Madison · US

Funding

Noninvasive assessment of in vivo tissue loads to enhance the treatment of gait disordersR01HD092697 · NICHD · UNIVERSITY OF WISCONSIN-MADISON · PI THELEN, DARRYL G · 2017 to 2021
$1.6M
NICHD NIH HHS HD092697NICHD NIH HHS R01 HD092697
6 · The paper itself

Abstract

Standing balance performance is often characterized by sway, as measured via fluctuations of the center of pressure (COP) under the feet. For example, COP metrics can effectively delineate changes in balance under altered sensory conditions. However, COP is a global metric of whole-body dynamics and thus does not necessarily lend insight into the underlying musculotendon control. We have previously shown that shear wave tensiometers can track wave speeds in tendon as a surrogate measure of the load transmitted by the muscle-tendon unit. The purpose of this study was to investigate whether shear wave metrics have sufficient sensitivity to track subtle variations in Achilles tendon loading that correspond with postural sway. Sixteen healthy young adults (26 ± 5 years) stood for 10 s with their eyes open and closed. We simultaneously recorded COP under the feet and shear wave speed in the right Achilles tendon. We found that Achilles tendon shear wave speed closely tracked (r > 0.95) dynamic fluctuations of the COP in the anteroposterior direction. Achilles tendon wave speed fluctuations significantly increased during standing with eyes closed, mirroring increases in COP fluctuations. These results demonstrate that tendon wave speed can track the subtle variations in Achilles tendon loading that modulate COP in standing. Hence, shear wave tensiometry exhibits the sensitivity to investigate the muscular control of quiet standing, and may also be useful for investigating other fine motor and force steadiness tasks.

Indexed as

Postural BalanceAchilles TendonAdultBiomechanical PhenomenaFemaleHumansMaleMuscle, SkeletalShear StrengthStanding PositionAchilles tendon forcecenter of pressureposturographyshear wave tensiometer

Identifiers

PMID31814337
PMCPMC6900496
OpenAlexW2994982033

What OpenQuestion holds

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LicenceCC BY
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Registered trials

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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.