Evidence map›Paper›PMID 30785895›Full record

ArticlePloS one2019

Transverse tendon stiffness is reduced in people with Achilles tendinopathy: A cross-sectional study.

Evan Finnamore, Charlotte Waugh, Lyndal Solomons, Michael Ryan, Christopher West, Alexander Scott

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 27 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
27citing papers in PubMed, 1 pooled it
4.5field-weighted citation impact, top 5% 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

27 citing papers in PubMed, 1 synthesis or guideline pooled it, 52 citations in OpenAlex.

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  17. Differences in Medial and Lateral Gastrocnemius Stiffness after Exercise-Induced Muscle Fatigue.International journal of environmental research and public health · 2022
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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

6 authors at 3 institutions in 1 country.

Evan FinnamoreCentre for Hip Health and Mobility, Vancouver Coastal Health Research Institute, Vancouver, Canada.
Charlotte WaughCentre for Hip Health and Mobility, Vancouver Coastal Health Research Institute, Vancouver, Canada.
Lyndal SolomonsCentre for Hip Health and Mobility, Vancouver Coastal Health Research Institute, Vancouver, Canada.ORCID 0000-0002-9019-1925
Michael RyanDepartment of Biomedical Physiology and Kinesiology, Simon Fraser University, Burnaby, Canada.
Christopher WestSouthern Medical Program, Department of Cellular and Physiological Sciences, University of British Columbia (Okanagan), Kelowna, Canada.
Alexander ScottCentre for Hip Health and Mobility, Vancouver Coastal Health Research Institute, Vancouver, Canada.ORCID 0000-0003-0366-8404
Vancouver Coastal Health · CASimon Fraser University · CAUniversity of British Columbia · CA

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectivesThe objective of the current cross-sectional study was to examine Achilles tendon transverse stiffness in a group of recreational runners with Achilles tendinopathy, in comparison to an asymptomatic group of runners with similar training history. We also aimed to determine the between-week intra-individual reliability of this measurement technique.

designCross-sectional cohort study.

methodsA hand-held dynamometer was used to assess the transverse stiffness of the Achilles tendon (AT) in twenty-five recreational runners. In ten people with midportion Achilles tendinopathy (5 men, 5 women), measurements were taken directly over the most symptomatic location. In 15 people who were free of AT symptoms (7 men, 8 women), measurements were taken at an equivalent location on the tendon. Participants returned after one week to determine measurement reliability (intra-class correlation coefficient/ICC and minimum detectable change/MDC95). We also collected information about people's tendon loading activities, tendon thickness (ultrasound mesaurement), and symptoms (Victorian Institute of Sports Assessment-Achilles / VISA-A score).

resultsThe AT transverse stiffness was lower in people with Achilles tendinopathy (777 N/m ± 86) compared to those who were asymptomatic (873 N/m ± 72) (p < 0.05). AT transverse stiffness was negatively correlated with age and tendon thickness, and positively correlated with VISA-A score and waist circumference. Reliability was good, with ICC of 0.81 in people with tendinopathy and 0.80 in healthy controls, and an MDC95 of 118 and 87N/m in these two respective groups.

conclusionsTransverse Achilles tendon stiffness can be reliably measured in people with midportion Achilles tendinopathy, and appears to be lower in people who are older, more symptomatic, and with more extensive tendon thickening. The potential clinical utility of monitoring tendon stiffness in the management of tendon injuries merits further study.

Indexed as

Achilles TendonAdultCohort StudiesCross-Sectional StudiesFemaleHumansMaleMiddle AgedMusculoskeletal DiseasesRunningTendinopathyTendon InjuriesUltrasonography

Identifiers

PMID30785895
PMCPMC6382130
OpenAlexW2917514537

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.