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Reliability and Accuracy of Linear Position Transducers During the Bench Press and Back Squat: Implications for Velocity-Based Training

2025Artigo científico Acesso aberto
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datacite.subject.fosCiências Médicas::Ciências da Saúde
datacite.subject.fosCiências Sociais::Outras Ciências Sociais
datacite.subject.sdg04:Educação de Qualidade
datacite.subject.sdg03:Saúde de Qualidade
dc.contributor.authorMontoro-Bombú, Raynier
dc.contributor.authorCosta, Armando
dc.contributor.authorSousa, Paulo Malico
dc.contributor.authorPinheiro, Valter
dc.contributor.authorForte, Pedro
dc.contributor.authorMonteiro, Luis
dc.contributor.authorRibeiro, Alex S.
dc.contributor.authorRama, Luis
dc.date.accessioned2025-10-06T13:01:40Z
dc.date.available2025-10-06T13:01:40Z
dc.date.issued2025
dc.description.abstractSelecting the right linear position transducer (LPT) for velocity-based training monitoring sometimes presents uncertainties for coaches. Objectives: This study rigorously examined the test-retest reliability of three LPT–Cs using a simultaneous triangulation method of the same device during bench press (BP) and back squat (SQ) exercises performed on a Smith machine. Methods: Forty university students—13 females (23 ± 2 years) and 27 males (31.5 ± 6 years)—voluntarily participated in a randomized repeated-measures study. LPTs were randomly assigned numbers and placed at 5 cm apart to measure and collect bar displacement (∆S), mean propulsive velocity (MPV), peak velocity (PV), and time to peak velocity (T–PV). Each volunteer performed three BP and SQ attempts with pre-standardized loads (males: BP ≥ 40 kg and SQ ≥ 60 kg; females: BP ≥ 25 kg and SQ ≥ 40 kg). Results: The main findings of this study support a high degree of reliability for LPTs. For all variables, the absolute reliability presented significant values (p ≤ 0.05), with an intraclass correlation coefficient ≥ 0.995, a 95% confidence interval between 0.992–0.999, a coefficient of variation ≤ 10%, and a standard error of the mean ≤ 0.031. Conclusions: Scientists and coaches can use the LPT device as a reliable tool for monitoring velocity-based training by providing rigorous measurements of ∆S, MPV, PV, and T–PV during BP and SQ exercises. In addition, the smallest real difference reported may be useful in identifying minimal changes in ∆S within a single set (BP = 0.10 cm; SQ = 0.13 cm).eng
dc.description.sponsorshipThis research received no external funding
dc.identifier.citationMontoro-Bombú, Raynier; Costa, Armando; Sousa, Paulo Malico; Pinheiro, Valter; Forte, Pedro; Monteiro, Luis; Ribeiro, Alex S.; Rama, Luis (2025). Reliability and Accuracy of Linear Position Transducers During the Bench Press and Back Squat: Implications for Velocity-Based Training. Journal of Functional Morphology and Kinesiology. ISSN 2411-5142. 10:2, p. 1-14
dc.identifier.doi10.3390/jfmk10020109
dc.identifier.issn2411-5142
dc.identifier.urihttp://hdl.handle.net/10198/34785
dc.language.isoeng
dc.peerreviewedyes
dc.publisherMDPI
dc.relation.ispartofJournal of Functional Morphology and Kinesiology
dc.rights.urihttp://creativecommons.org/licenses/by-nd/4.0/
dc.subjectBiomechanics
dc.subjectVelocity-based training
dc.subjectForce
dc.subjectMonitoring training and testing
dc.subjectStrength
dc.subjectPerformance
dc.titleReliability and Accuracy of Linear Position Transducers During the Bench Press and Back Squat: Implications for Velocity-Based Trainingeng
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage14
oaire.citation.issue2
oaire.citation.startPage1
oaire.citation.titleJournal of Functional Morphology and Kinesiology
oaire.citation.volume10
oaire.versionhttp://purl.org/coar/version/c_970fb48d4fbd8a85
person.familyNameForte
person.givenNamePedro
person.identifier.ciencia-id351B-B16B-79C7
person.identifier.orcid0000-0003-0184-6780
relation.isAuthorOfPublication3ecc6d1b-07a4-40d7-81f4-df6fd7b3d5b0
relation.isAuthorOfPublication.latestForDiscovery3ecc6d1b-07a4-40d7-81f4-df6fd7b3d5b0

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