Evaluation of muscular and functional inter-limb asymmetries during mid-season in young male soccer athletes

To identify inter-limb asymmetries through the knee's muscular and lower limb functional performance in young male soccer athletes. Twenty male soccer athletes aged 17 to 19 from an under-20 team performed isokinetic tests at 60°/s., 120°/s., 180°/s., and 240°/s. To assess the knee extensors an...

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Bibliographic Details
Published in:	Journal of bodywork and movement therapies Vol. 38; pp. 605 - 614
Main Authors:	Wiprich, Melissa Talita, Eberle, Elias Franzoi, Balbinot, Guilherme Faria, Cecconi, Matheus Pauletti, Binotti, Fernando, Tadiello, Gerson Saciloto, Bonetti, Leandro Viçosa
Format:	Journal Article
Language:	English
Published:	United States Elsevier Ltd 01-04-2024
Subjects:	Adolescent Athletes Functional tests Hamstring Muscles - physiology Humans Inter-limb asymmetry Isokinetic dynamometer Lower Extremity - physiology Male Muscle Strength - physiology Muscle, Skeletal - physiology Soccer - physiology Soccer player Torque Young Adult Younger Male Functional tests Inter-limb asymmetry Soccer player Younger Isokinetic dynamometer
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Summary:	To identify inter-limb asymmetries through the knee's muscular and lower limb functional performance in young male soccer athletes. Twenty male soccer athletes aged 17 to 19 from an under-20 team performed isokinetic tests at 60°/s., 120°/s., 180°/s., and 240°/s. To assess the knee extensors and flexors muscles and functional tests (hop tests and Y-balance test). There were no significant differences between the dominant limb (DL) and non-dominant limb (NDL) in the knee extensors and flexors peak torque and hamstrings (H)/quadriceps(Q) conventional ratio. Moreover, no angular velocities observed inter-limb asymmetries seen by values higher than 10% in the isokinetic parameters. However, the H/Q conventional ratio shows borderline values in low angular velocities (60°/s. and 120°/s.). No significant changes were observed in the functional test performance between the DL and NDL. Furthermore, we did not see inter-limb asymmetries in both hop and Y-balance tests. On the contrary, the anterior distance reached was lower than found in the literature, and the composite score of the Y-balance test demonstrated values below the normative (>94%). The data demonstrated that soccer athletes have muscular and functional inter-limb symmetry. However, they tend to have knee muscle imbalance in low velocities and dynamic balance deficits that might increase the risk of musculoskeletal injury.
Bibliography:	ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23
ISSN:	1360-8592 1532-9283
DOI:	10.1016/j.jbmt.2024.03.067