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Measuring system and method of determining the Adaptive Force.
Eur J Transl Myol. 2017 Jun 27; 27(3):6479.EJ

Abstract

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.

Authors+Show Affiliations

Section Regulative Physiology and Prevention, Department of Sport and Health Sciences, University of Potsdam, Brandenburg, Germany.Section Regulative Physiology and Prevention, Department of Sport and Health Sciences, University of Potsdam, Brandenburg, Germany.Section Regulative Physiology and Prevention, Department of Sport and Health Sciences, University of Potsdam, Brandenburg, Germany.

Pub Type(s)

Case Reports

Language

eng

PubMed ID

29118954

Citation

Schaefer, Laura, et al. "Measuring System and Method of Determining the Adaptive Force." European Journal of Translational Myology, vol. 27, no. 3, 2017, p. 6479.
Schaefer L, Hoff M, Bittmann F. Measuring system and method of determining the Adaptive Force. Eur J Transl Myol. 2017;27(3):6479.
Schaefer, L., Hoff, M., & Bittmann, F. (2017). Measuring system and method of determining the Adaptive Force. European Journal of Translational Myology, 27(3), 6479. https://doi.org/10.4081/ejtm.2017.6479
Schaefer L, Hoff M, Bittmann F. Measuring System and Method of Determining the Adaptive Force. Eur J Transl Myol. 2017 Jun 27;27(3):6479. PubMed PMID: 29118954.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Measuring system and method of determining the Adaptive Force. AU - Schaefer,Laura, AU - Hoff,Marko, AU - Bittmann,Frank, Y1 - 2017/07/20/ PY - 2017/01/03/received PY - 2017/06/16/revised PY - 2017/06/26/accepted PY - 2017/11/10/entrez PY - 2017/11/10/pubmed PY - 2017/11/10/medline KW - Adaptive Force KW - isometric eccentric force KW - motor control KW - muscle action KW - strength measurement system SP - 6479 EP - 6479 JF - European journal of translational myology JO - Eur J Transl Myol VL - 27 IS - 3 N2 - 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. SN - 2037-7452 UR - https://www.unboundmedicine.com/medline/citation/29118954/Measuring_system_and_method_of_determining_the_Adaptive_Force_ L2 - https://doi.org/10.4081/ejtm.2017.6479 DB - PRIME DP - Unbound Medicine ER -
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