Knee extensor/flexor muscle torque and jump performance in male volleyball players: effect of experience and torque-angle-velocity relationships

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dc.authorwosidSaç, Ajlan/AAQ-7802-2021
dc.contributor.authorSac, Ajlan
dc.date.accessioned2024-06-12T11:07:07Z
dc.date.available2024-06-12T11:07:07Z
dc.date.issued2021
dc.departmentTrakya Üniversitesien_US
dc.description.abstractBackground and objective: There are many studies that have examined the differences in isokinetic strength performance differences in athletes; however, observing these angular velocity-dependent differences on surface maps is a very practical and useful application. The aim of this study was to determine the angular velocity-dependent isokinetic knee extensor/flexor muscle strength and jump performance and to compare the test results and 3D torque-angle-velocity surface maps of amateur and professional volleyball players. Materials and methods: We included 25 well-trained male volleyball players (14 professionals and 11 amateurs) with a mean age of 21.8 +/- 2.6 years (range 18-27 years) in this cross-sectional study. The dominant knee concentric muscle contractions were analyzed at 300, 120, and 60 degrees/s angular velocities to determine peak torque (PT), total work (TW), mean power (MP), angle of peak torque (APT), and hamstring-to-quadriceps torque ratio (H:Q). Vertical jump performance was assessed using countermovement jump (CMJ) test. These data were processed using a MATLAB algorithm for constructing the 3D torque-angle-velocity surface maps. Results and conclusions: Significant differences were identified for extensor-flexor PT between PRO and AT at 300 and 120 degrees/s (p < 0.05). Moreover, there were significant differences between groups for MP and APT at 300 and 120 degrees/s for TW at all velocities. CMJ test results were significantly different between the groups (p < 0.05). Amateur and professional male volleyball players showed different concentric knee strengths across isokinetic velocities and different eccentric strengths on CMJ test. 3D surface maps can play an important role in the comparative analysis of athletes with different sports backgrounds or in performance analyses when tracking individual development and provide a detailed and understandable perspective in revealing differences. It can also be of help in detection of possible deficits in muscle strength and load range before and after potential injuries.en_US
dc.identifier.doi10.31083/jomh.2021.065
dc.identifier.endpage225en_US
dc.identifier.issn1875-6867
dc.identifier.issn1875-6859
dc.identifier.issue4en_US
dc.identifier.scopus2-s2.0-85116767541en_US
dc.identifier.scopusqualityQ4en_US
dc.identifier.startpage218en_US
dc.identifier.urihttps://doi.org/10.31083/jomh.2021.065
dc.identifier.urihttps://hdl.handle.net/20.500.14551/21907
dc.identifier.volume17en_US
dc.identifier.wosWOS:000699917100001en_US
dc.identifier.wosqualityQ4en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherImr Pressen_US
dc.relation.ispartofJournal Of Mens Healthen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subjectIsokineticen_US
dc.subjectKneeen_US
dc.subjectMuscle Strengthen_US
dc.subjectVolleyballen_US
dc.subject3D Surface Mappingen_US
dc.subjectIsokinetic Dynamometryen_US
dc.subjectStrengthen_US
dc.subjectQuadricepsen_US
dc.subjectHamstringsen_US
dc.subjectPoweren_US
dc.subjectCapacityen_US
dc.subjectEnergyen_US
dc.subjectYoungen_US
dc.titleKnee extensor/flexor muscle torque and jump performance in male volleyball players: effect of experience and torque-angle-velocity relationshipsen_US
dc.typeArticleen_US

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