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Comparison of knee muscular strength balance among pre- and post-puberty adolescent swimmers: a cross-sectional pilot study

2023Journal article Open access
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dc.contributor.authorAmado, Bruno Lombardi
dc.contributor.authorLira, Claudio A.B. de
dc.contributor.authorVancini, Rodrigo Luiz
dc.contributor.authorForte, Pedro
dc.contributor.authorCosta, Taline
dc.contributor.authorWeiss, Katja
dc.contributor.authorKnechtle, Beat
dc.contributor.authorAndrade, Marilia Santos
dc.date.accessioned2021-12-07T09:55:20Z
dc.date.available2021-12-07T09:55:20Z
dc.date.issued2023
dc.description.abstractMuscular weakness and strength imbalance between the thigh muscles are considered risk factors for knee injuries. Hormonal changes, characteristic of puberty, strongly affect muscle strength; however, it is unknown whether they affect muscular strength balance. The present study aimed to compare knee flexor strength, knee extensor strength, and strength balance ratio, called the conventional ratio (CR), between prepubertal and postpubertal swimmers of both sexes. A total of 56 boys and 22 girls aged between 10 and 20 years participated in the study. Peak torque, CR, and body composition were measured using an isokinetic dynamometer and dual-energy X-ray absorptiometry, respectively. The postpubertal boys group presented significantly higher fat-free mass (p < 0.001) and lower fat mass (p = 0.001) than the prepubertal group. There were no significant differences among the female swimmers. Peak torque for both flexor and extensor muscles was significantly greater in postpubertal male (p < 0.001, both) and female swimmers (p < 0.001 and p = 0.001, respectively) than in prepubertal swimmers. The CR did not differ between the pre- and postpubertal groups. However, the mean CR values were lower than the literature recommendations, which brings attention to a higher risk of knee injuries.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationAmado, Bruno Lombardi; Lira, Claudio A.B. de; Vancini, Rodrigo Luiz; Forte, Pedro; Costa, Taline; Weiss, Katja; Knechtle, Beat; Andrade, Marilia Santos (2023). Comparison of knee muscular strength balance among pre- and post-puberty adolescent swimmers: a cross-sectional pilot study. Healthcare. eISSN 2227-9032. 11:5, p. 1-28pt_PT
dc.identifier.doi10.3390/healthcare11050744
dc.identifier.eissn2227-9032
dc.identifier.urihttp://hdl.handle.net/10198/24471
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherMDPIpt_PT
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectPubertypt_PT
dc.subjectIsokineticpt_PT
dc.subjectPeak torquept_PT
dc.subjectConventional ratiopt_PT
dc.subjectMuscle balancept_PT
dc.titleComparison of knee muscular strength balance among pre- and post-puberty adolescent swimmers: a cross-sectional pilot studypt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.titleHealthcarept_PT
person.familyNameForte
person.givenNamePedro
person.identifier.ciencia-id351B-B16B-79C7
person.identifier.orcid0000-0003-0184-6780
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublication3ecc6d1b-07a4-40d7-81f4-df6fd7b3d5b0
relation.isAuthorOfPublication.latestForDiscovery3ecc6d1b-07a4-40d7-81f4-df6fd7b3d5b0

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