Evidence map›Paper›PMID 38541043›Full record

ArticleJournal of personalized medicine2024

Assessment of Muscle Stiffness Using the MyotonPro: Effects of Fatigue on Vastus Lateralis and Medialis Muscles.

Jonathan Lettner, Lars Graventein, Hassan Tarek Hakam, Nikolai Ramadanov, Roland Becker, Robert Prill

Registry-linked trialAbstract read
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In one paragraph

Article in Journal of personalized medicine, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT07547566 (Immediate and Short-term Effects of TECAR Therapy and Cycle Ergometer on Recovery After Fatigue in Young Athletes), which is not on this 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.

NCT07547566 narecruitingnot on this mapstarted 2026, after this paper: background citation

Immediate and Short-term Effects of TECAR Therapy and Cycle Ergometer on Recovery After Fatigue in Young Athletes: a Randomized Controlled Trial

TypeinterventionalSponsorMaimónides Biomedical Research Institute of CórdobaRan2026 to 2026Enrolled48ConditionsMuscle Fatigue, Healthy AdultArmsTecar therapy (capacitive mode), Active recovery using cycle ergometer
3 · Its place in the literature

Who cites it

3 citing papers in PubMed.

  1. Trial
  2. Observational
  3. 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

6 authors.

Jonathan LettnerCenter of Orthopaedics and Traumatology, University Hospital Brandenburg/Havel, Brandenburg Medical School, Hochstraße 29, 14770 Brandenburg an der Havel, Germany.
Lars GraventeinFaculty of Health Science, Brandenburg Medical School, 14770 Brandenburg an der Havel, Germany.
Hassan Tarek HakamCenter of Orthopaedics and Traumatology, University Hospital Brandenburg/Havel, Brandenburg Medical School, Hochstraße 29, 14770 Brandenburg an der Havel, Germany.
Nikolai RamadanovCenter of Orthopaedics and Traumatology, University Hospital Brandenburg/Havel, Brandenburg Medical School, Hochstraße 29, 14770 Brandenburg an der Havel, Germany.ORCID 0000-0003-4669-8187
Roland BeckerCenter of Orthopaedics and Traumatology, University Hospital Brandenburg/Havel, Brandenburg Medical School, Hochstraße 29, 14770 Brandenburg an der Havel, Germany.
Robert PrillCenter of Orthopaedics and Traumatology, University Hospital Brandenburg/Havel, Brandenburg Medical School, Hochstraße 29, 14770 Brandenburg an der Havel, Germany.ORCID 0000-0002-4916-1206

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThe investigation of soft tissue stiffness has garnered increasing interest due to its potential applications in detecting tissue conditions, monitoring therapy effects, and preventing sports injuries. This study utilized the MyotonPro as a reliable measurement device to assess muscle stiffness and muscle frequency in the vastus lateralis and medialis muscles of both the dominant and non-dominant legs.

methodsSixteen young, healthy subjects (seven males and nine females, age 25 ± 3.46 years) participated in this study. To induce maximal muscle fatigue, the vastus lateralis and vastus medialis muscles were subjected to a 30 kg load using a single-leg leg press. Pre- and post-fatigue measurements were conducted by two testers on the dominant and non-dominant legs, respectively, employing the MyotonPro.

resultsWe revealed a significant increase in muscle stiffness after maximal muscle fatigue. Specifically, on the dominant side, the vastus lateralis exhibited a stiffness increase of 6.5%, while the vastus medialis showed a 6.3% increase. On the non-dominant side, the vastus lateralis demonstrated a 7.6% increase, and the vastus medialis exhibited a 6.7% increase in muscle stiffness. Furthermore, muscle frequency increased by 8.6% (vastus lateralis) and 13.5% (vastus medialis) on the dominant side and by 15.1% (vastus lateralis) and 6.3% (vastus medialis) on the non-dominant side. The reliability of the measurements varied, with Cronbach's alpha values ranging from inadequate 0.49 to very good 0.88.

conclusionThis study affirms the efficacy of the MyotonPro as a measurement device for assessing muscle stiffness and establishes its reliability. The observed increase in muscle stiffness after maximal muscle fatigue, accompanied by changes in muscle frequency, underscores the device's utility. However, further research is warranted to validate the reproducibility of these findings and explore additional facets of the muscular response to fatigue.

Indexed as

frequencymaximal muscle fatigueMyotonProreliabilitystiffnessvastus lateralis musclevastus medialis muscle

Identifiers

PMID38541043
PMCPMC10970802

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Registered trials

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