Reliability of isometric and isokinetic trunk flexor strength using a functional electromechanical dynamometer

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dc.contributor.authorRodriguez-Perea, Angela
dc.contributor.authorRíos, Luis J. Chirosa
dc.contributor.authorMartinez-Garcia, Dario
dc.contributor.authorUlloa-Díaz, David
dc.contributor.authorRojas, Francisco Guede
dc.contributor.authorJerez-Mayorga, Daniel
dc.contributor.authorRios, Ignacio J. Chirosa
dc.date.accessioned2023-03-29T13:27:07Z
dc.date.available2023-03-29T13:27:07Z
dc.date.issued2019
dc.descriptionIndexación Scopuses
dc.description.abstractAim. To determine the absolute and relative reliability of functional trunk tests, using a functional electromechanical dynamometer to evaluate the isokinetic strength of trunk flexors and to determine the most reliable assessment condition, in order to compare the absolute and relative reliability of mean force and peak force of trunk flexors and to determine which isokinetic condition of evaluation is best related to the maximum isometric. Methods. Test-retest of thirty-seven physically active male student volunteers who performed the different protocols, isometric contraction and the combination of three velocities (V1 D 015 m s-1 , V2 D 0.30 m s-1, V3 D 0.45 m s-1) and two range of movement (R1 D 25% cm ; R2 D 50% cm) protocols. Results. All protocols to evaluate trunk flexors showed an absolute reliability provided a stable repeatability for isometric and dynamic protocols with a coefficient of variation (CV) being below 10% and a high or very high relative reliability (0.69 < intraclass correlation coefficient [ICC] > 0.86). The more reliable strength manifestation (CV D 6.82%) to evaluate the concentric contraction of trunk flexors was mean force, with 0.15 m s-1 and short range of movement (V1R1) condition. The most reliable strength manifestation to evaluate the eccentric contraction of trunk flexors was peak force, with 0.15 m s-1 and a large range of movement (V1R2; CV D 5.07%), and the most reliable way to evaluate isometric trunk flexors was by peak force (CV D 7.72%). The mean force of eccentric trunk flexor strength with 0.45 m s-1 and short range of movement (V3R1) condition (r D 0.73) was best related to the maximum isometric contraction. Conclusion. Functional electromechanical dynamometry is a reliable evaluation system for assessment of trunk flexor strength.es
dc.identifier.citationPeerJ Volume 2019, Issue 10 2019 Article number 7883es
dc.identifier.doi10.7717/peerj.7883
dc.identifier.issn2167-8359
dc.identifier.urihttps://repositorio.unab.cl/xmlui/handle/ria/48016
dc.language.isoenes
dc.publisherPeerJes
dc.rights.licenseAttribution 4.0 International (CC BY 4.0)en
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/en
dc.subjectCorees
dc.subjectIsokinetices
dc.subjectIsometrices
dc.subjectReproducibilityes
dc.subjectResistancees
dc.subjectTestes
dc.titleReliability of isometric and isokinetic trunk flexor strength using a functional electromechanical dynamometeres
dc.typeArtículoes
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