Evidence map›Paper›PMID 30088133›Full record

ArticleEuropean journal of applied physiology2018

The role of muscle strength on tendon adaptability in old age.

D Holzer, G Epro, C McCrum, J Doerner, J A Luetkens, L Scheef, G M Kukuk, H Boecker, A Mierau, G-P Brüggemann and 2 more

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Article in European journal of applied physiology, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.

0numbers the graph read from it
0cells of the map it votes in
3citing 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

3 citing papers in PubMed.

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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

12 authors.

D HolzerSchool of Sport and Exercise Sciences, Liverpool John Moores University, Liverpool, UK.
G EproSport and Exercise Science Research Centre, School of Applied Sciences, London South Bank University, 103 Borough Rd, London, SE1 0AA, UK. g.epro@lsbu.ac.uk.ORCID http://orcid.org/0000-0002-7241-1533
C McCrumDepartment of Nutrition and Movement Sciences, NUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht University Medical Centre+, Maastricht, The Netherlands.
J DoernerDepartment of Radiology, University of Bonn, Bonn, Germany.
J A LuetkensDepartment of Radiology, University of Bonn, Bonn, Germany.
L ScheefDepartment of Radiology, University of Bonn, Bonn, Germany.
G M KukukDepartment of Radiology, University of Bonn, Bonn, Germany.
H BoeckerDepartment of Radiology, University of Bonn, Bonn, Germany.
A MierauDepartment of Exercise and Sport Science, LUNEX International University of Health, Exercise and Sports, Differdange, Luxembourg.
G-P BrüggemannInstitute of Biomechanics and Orthopaedics, German Sport University Cologne, Cologne, Germany.
C N MaganarisSchool of Sport and Exercise Sciences, Liverpool John Moores University, Liverpool, UK.
K KaramanidisSport and Exercise Science Research Centre, School of Applied Sciences, London South Bank University, 103 Borough Rd, London, SE1 0AA, UK.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeThe purpose of the study was to determine: (1) the relationship between ankle plantarflexor muscle strength and Achilles tendon (AT) biomechanical properties in older female adults, and (2) whether muscle strength asymmetries between the individually dominant and non-dominant legs in the above subject group were accompanied by inter-limb AT size differences.

methodsThe maximal generated AT force, AT stiffness, AT Young's modulus, and AT cross-sectional area (CSA) along its length were determined for both legs in 30 women (65 ± 7 years) using dynamometry, ultrasonography, and magnetic resonance imaging.

resultsNo between-leg differences in triceps surae muscle strength were identified between dominant (2798 ± 566 N) and non-dominant limb (2667 ± 512 N). The AT CSA increased gradually in the proximo-distal direction, with no differences between the legs. There was a significant correlation (P < 0.05) of maximal AT force with AT stiffness (r = 0.500) and Young's modulus (r = 0.414), but only a tendency with the mean AT CSA. However, region-specific analysis revealed a significant relationship between maximal AT force and the proximal part of the AT, indicating that this region is more likely to display morphological adaptations following an increase in muscle strength in older adults.

conclusionsThese findings demonstrate that maximal force-generation capabilities play a more important role in the variation of AT stiffness and material properties than in tendon CSA, suggesting that exercise-induced increases in muscle strength in older adults may lead to changes in tendon stiffness foremost due to alterations in material rather than in its size.

Indexed as

Achilles TendonAdaptation, PhysiologicalAgedAgingElastic ModulusFemaleHumansMagnetic Resonance ImagingMiddle AgedMuscle, SkeletalMuscle StrengthMuscle Strength DynamometerAgingCross-sectional areaMaximum muscle forceTendon stiffnessTriceps suraeYoung’s modulus

Identifiers

PMID30088133
PMCPMC6182320

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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.