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Measuring system and method of determining the Adaptive Force
The term Adaptive Force (AF) describes the capability of adaptation of the nerve-muscle-system to externally applied forces during isometric and eccentric muscle action. This ability plays an important role in real life motions as well as in sports. The focus of this paper is on the specific measure...
Autores principales: | , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
PAGEPress Publications, Pavia, Italy
2017
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5656809/ https://www.ncbi.nlm.nih.gov/pubmed/29118954 http://dx.doi.org/10.4081/ejtm.2017.6479 |
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author | Schaefer, Laura Hoff, Marko Bittmann, Frank |
author_facet | Schaefer, Laura Hoff, Marko Bittmann, Frank |
author_sort | Schaefer, Laura |
collection | PubMed |
description | The term Adaptive Force (AF) describes the capability of adaptation of the nerve-muscle-system to externally applied forces during isometric and eccentric muscle action. This ability plays an important role in real life motions as well as in sports. The focus of this paper is on the specific measurement method of this neuromuscular action, which can be seen as innovative. A measuring system based on the use of compressed air was constructed and evaluated for this neuromuscular function. It depends on the physical conditions of the subject, at which force level it deviates from the quasi isometric position and merges into eccentric muscle action. The device enables – in contrast to the isokinetic systems – a measure of strength without forced motion. Evaluation of the scientific quality criteria of the devices was done by measurements regarding the intra- and interrater-, the test-retest-reliability and fatiguing measurements. Comparisons of the pneumatic device with a dynamometer were also done. Looking at the mechanical evaluation, the results show a high level of consistency (r²=0.94 to 0.96). The parallel test reliability delivers a very high and significant correlation (ρ=0.976; p=0.000). Including the biological system, the concordance of three different raters is very high (p=0.001, Cronbachs alpha α=0.987). The test retest with 4 subjects over five weeks speaks for the reliability of the device in showing no statistically significant differences. These evaluations indicate that the scientific evaluation criteria are fulfilled. The specific feature of this system is that an isometric position can be maintained while the externally impacting force rises. Moreover, the device can capture concentric, static and eccentric strength values. Fields of application are performance diagnostics in sports and medicine. |
format | Online Article Text |
id | pubmed-5656809 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2017 |
publisher | PAGEPress Publications, Pavia, Italy |
record_format | MEDLINE/PubMed |
spelling | pubmed-56568092017-11-08 Measuring system and method of determining the Adaptive Force Schaefer, Laura Hoff, Marko Bittmann, Frank Eur J Transl Myol Case Report The term Adaptive Force (AF) describes the capability of adaptation of the nerve-muscle-system to externally applied forces during isometric and eccentric muscle action. This ability plays an important role in real life motions as well as in sports. The focus of this paper is on the specific measurement method of this neuromuscular action, which can be seen as innovative. A measuring system based on the use of compressed air was constructed and evaluated for this neuromuscular function. It depends on the physical conditions of the subject, at which force level it deviates from the quasi isometric position and merges into eccentric muscle action. The device enables – in contrast to the isokinetic systems – a measure of strength without forced motion. Evaluation of the scientific quality criteria of the devices was done by measurements regarding the intra- and interrater-, the test-retest-reliability and fatiguing measurements. Comparisons of the pneumatic device with a dynamometer were also done. Looking at the mechanical evaluation, the results show a high level of consistency (r²=0.94 to 0.96). The parallel test reliability delivers a very high and significant correlation (ρ=0.976; p=0.000). Including the biological system, the concordance of three different raters is very high (p=0.001, Cronbachs alpha α=0.987). The test retest with 4 subjects over five weeks speaks for the reliability of the device in showing no statistically significant differences. These evaluations indicate that the scientific evaluation criteria are fulfilled. The specific feature of this system is that an isometric position can be maintained while the externally impacting force rises. Moreover, the device can capture concentric, static and eccentric strength values. Fields of application are performance diagnostics in sports and medicine. PAGEPress Publications, Pavia, Italy 2017-07-20 /pmc/articles/PMC5656809/ /pubmed/29118954 http://dx.doi.org/10.4081/ejtm.2017.6479 Text en http://creativecommons.org/licenses/by-nc/4.0/ This article is distributed under the terms of the Creative Commons Attribution Noncommercial License (by-nc 4.0) which permits any noncommercial use, distribution, and reproduction in any medium, provided the original author(s) and source are credited. |
spellingShingle | Case Report Schaefer, Laura Hoff, Marko Bittmann, Frank Measuring system and method of determining the Adaptive Force |
title | Measuring system and method of determining the Adaptive Force |
title_full | Measuring system and method of determining the Adaptive Force |
title_fullStr | Measuring system and method of determining the Adaptive Force |
title_full_unstemmed | Measuring system and method of determining the Adaptive Force |
title_short | Measuring system and method of determining the Adaptive Force |
title_sort | measuring system and method of determining the adaptive force |
topic | Case Report |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5656809/ https://www.ncbi.nlm.nih.gov/pubmed/29118954 http://dx.doi.org/10.4081/ejtm.2017.6479 |
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