Reproducibility of peak moment for isometric and isokinetic knee extension exercise
Abstract Background Accurate measurements of muscular performance are important for diagnostics, for example during rehabilitation after traumatic injuries but also in competitive sports. For these purposes, dynamometric devices are widely used and considered the gold standard for muscle strength te...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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BMC
2023-12-01
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| Series: | BMC Sports Science, Medicine and Rehabilitation |
| Subjects: | |
| Online Access: | https://doi.org/10.1186/s13102-023-00788-z |
| _version_ | 1797388164743036928 |
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| author | Manfred Zöger Alfred Nimmerichter Arnold Baca Klaus Wirth |
| author_facet | Manfred Zöger Alfred Nimmerichter Arnold Baca Klaus Wirth |
| author_sort | Manfred Zöger |
| collection | DOAJ |
| description | Abstract Background Accurate measurements of muscular performance are important for diagnostics, for example during rehabilitation after traumatic injuries but also in competitive sports. For these purposes, dynamometric devices are widely used and considered the gold standard for muscle strength testing. However, few previous studies have tested the reproducibility of peak moment (PM) at velocities close to the maximum device capability, and in general, reproducibility results cannot be transferred to other devices or test protocols. The purpose of this study was to evaluate the reproducibility of PM for different isometric and isokinetic knee extension exercises using the IsoMed 2000. Methods Thirty subjects volunteered in three repeated test sessions, including isometric knee extension (100° and 140° knee angle) and isokinetic knee extension (30°/s and 400°/s). Statistical analysis for comparison of sessions two and three included paired sample t-test, calculation of intraclass correlation coefficient (ICC) and standard error of measurement (SEM). Additionally, Bland Altman statistics and corresponding plots were created. Results A significant difference between sessions in PM was found for isometric knee extension in one leg (140° left). Reproducibility was high for all conditions with ICC ranging from 0.964 to 0.988 and SEM in the range of 7.6 to 10.5 Nm. Bland Altman statistics revealed a bias between − 7.3 and 0.7 Nm. Conclusions Reproducibility of PM using the IsoMed 2000 was good after an initial familiarization trial with high values of relative reproducibility. Absolute reproducibility can be interpreted as appropriate for most common practical applications. |
| first_indexed | 2024-03-08T22:36:53Z |
| format | Article |
| id | doaj.art-e968c6cfe6064638b58f129ec5eadd73 |
| institution | Directory Open Access Journal |
| issn | 2052-1847 |
| language | English |
| last_indexed | 2024-03-08T22:36:53Z |
| publishDate | 2023-12-01 |
| publisher | BMC |
| record_format | Article |
| series | BMC Sports Science, Medicine and Rehabilitation |
| spelling | doaj.art-e968c6cfe6064638b58f129ec5eadd732023-12-17T12:26:36ZengBMCBMC Sports Science, Medicine and Rehabilitation2052-18472023-12-011511810.1186/s13102-023-00788-zReproducibility of peak moment for isometric and isokinetic knee extension exerciseManfred Zöger0Alfred Nimmerichter1Arnold Baca2Klaus Wirth3Training and Sports Sciences, University of Applied Sciences Wiener NeustadtTraining and Sports Sciences, University of Applied Sciences Wiener NeustadtCentre for Sport Science and University Sports, University of ViennaTraining and Sports Sciences, University of Applied Sciences Wiener NeustadtAbstract Background Accurate measurements of muscular performance are important for diagnostics, for example during rehabilitation after traumatic injuries but also in competitive sports. For these purposes, dynamometric devices are widely used and considered the gold standard for muscle strength testing. However, few previous studies have tested the reproducibility of peak moment (PM) at velocities close to the maximum device capability, and in general, reproducibility results cannot be transferred to other devices or test protocols. The purpose of this study was to evaluate the reproducibility of PM for different isometric and isokinetic knee extension exercises using the IsoMed 2000. Methods Thirty subjects volunteered in three repeated test sessions, including isometric knee extension (100° and 140° knee angle) and isokinetic knee extension (30°/s and 400°/s). Statistical analysis for comparison of sessions two and three included paired sample t-test, calculation of intraclass correlation coefficient (ICC) and standard error of measurement (SEM). Additionally, Bland Altman statistics and corresponding plots were created. Results A significant difference between sessions in PM was found for isometric knee extension in one leg (140° left). Reproducibility was high for all conditions with ICC ranging from 0.964 to 0.988 and SEM in the range of 7.6 to 10.5 Nm. Bland Altman statistics revealed a bias between − 7.3 and 0.7 Nm. Conclusions Reproducibility of PM using the IsoMed 2000 was good after an initial familiarization trial with high values of relative reproducibility. Absolute reproducibility can be interpreted as appropriate for most common practical applications.https://doi.org/10.1186/s13102-023-00788-zReproducibilityIsomed 2000DynamometerIsometricIsokinetic |
| spellingShingle | Manfred Zöger Alfred Nimmerichter Arnold Baca Klaus Wirth Reproducibility of peak moment for isometric and isokinetic knee extension exercise BMC Sports Science, Medicine and Rehabilitation Reproducibility Isomed 2000 Dynamometer Isometric Isokinetic |
| title | Reproducibility of peak moment for isometric and isokinetic knee extension exercise |
| title_full | Reproducibility of peak moment for isometric and isokinetic knee extension exercise |
| title_fullStr | Reproducibility of peak moment for isometric and isokinetic knee extension exercise |
| title_full_unstemmed | Reproducibility of peak moment for isometric and isokinetic knee extension exercise |
| title_short | Reproducibility of peak moment for isometric and isokinetic knee extension exercise |
| title_sort | reproducibility of peak moment for isometric and isokinetic knee extension exercise |
| topic | Reproducibility Isomed 2000 Dynamometer Isometric Isokinetic |
| url | https://doi.org/10.1186/s13102-023-00788-z |
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