Mechanotendography in Achillodynia shows reduced oscillation variability of pre-loaded Achilles tendon
- The present study focuses on an innovative approach in measuring the mechanical oscillations of pre-loaded Achilles tendon by using Mechanotendography (MTG) during application of a short yet powerful mechanical pressure impact. This was applied on the forefoot from the plantar side in direction of dorsiflexion, while the subject stood on the ball of the forefoot on one leg. Participants with Achilles tendinopathy (AT; n = 10) were compared to healthy controls (Con; n = 10). Five trials were performed on each side of the body. For evaluation, two intervals after the impulse began (0-100ms; 30-100ms) were cut from the MTG and pressure raw signals. The intrapersonal variability between the five trials in both intervals were evaluated using the arithmetic mean and coefficient of variation of the mean correlation (Spearman rank correlation) and the normalized averaged mean distances, respectively. The AT-group showed a significantly reduced variability in MTG compared to the Con-group (from p = 0.006 to p = 0.028 for different parameters).The present study focuses on an innovative approach in measuring the mechanical oscillations of pre-loaded Achilles tendon by using Mechanotendography (MTG) during application of a short yet powerful mechanical pressure impact. This was applied on the forefoot from the plantar side in direction of dorsiflexion, while the subject stood on the ball of the forefoot on one leg. Participants with Achilles tendinopathy (AT; n = 10) were compared to healthy controls (Con; n = 10). Five trials were performed on each side of the body. For evaluation, two intervals after the impulse began (0-100ms; 30-100ms) were cut from the MTG and pressure raw signals. The intrapersonal variability between the five trials in both intervals were evaluated using the arithmetic mean and coefficient of variation of the mean correlation (Spearman rank correlation) and the normalized averaged mean distances, respectively. The AT-group showed a significantly reduced variability in MTG compared to the Con-group (from p = 0.006 to p = 0.028 for different parameters). The 95% confidence intervals (CI) of MTG results were disjoint, whereas the 95% CIs of the pressure signals were similar (p = 0.192 to p = 0.601). We suggest from this work that the variability of mechanical tendon oscillations could be an indicative parameter of an altered Achilles tendon functionality.…
Author details: | Laura SchaeferORCiDGND, Frank BittmannORCiDGND |
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URN: | urn:nbn:de:kobv:517-opus4-483499 |
DOI: | https://doi.org/10.25932/publishup-48349 |
ISSN: | 1866-8364 |
Title of parent work (English): | Postprints der Universität Potsdam : Humanwissenschaftliche Reihe |
Subtitle (English): | a pilot study |
Publication series (Volume number): | Zweitveröffentlichungen der Universität Potsdam : Humanwissenschaftliche Reihe (668) |
Publication type: | Postprint |
Language: | English |
Date of first publication: | 2020/11/19 |
Publication year: | 2020 |
Publishing institution: | Universität Potsdam |
Release date: | 2020/11/19 |
Tag: | Mechanotendography; impact on pre-activated Achilles tendon; mechanical tendinous oscillations; variability |
Issue: | 668 |
Number of pages: | 13 |
Source: | European Journal of Translational Myology (EJTM) 30 (2020) 2,pp. 247-257 DOI: 10.4081/ejtm.2020.8983 |
Organizational units: | Humanwissenschaftliche Fakultät / Strukturbereich Kognitionswissenschaften |
DDC classification: | 6 Technik, Medizin, angewandte Wissenschaften / 61 Medizin und Gesundheit / 610 Medizin und Gesundheit |
Peer review: | Referiert |
Publishing method: | Open Access / Green Open-Access |
License (German): | CC-BY-NC - Namensnennung, nicht kommerziell 4.0 International |
External remark: | Bibliographieeintrag der Originalveröffentlichung/Quelle |