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Sport Sciences for Health
Published in: Sport Sciences for Health 3/2018

01-12-2018 | Original Article

Developmental associations with muscle morphology, physical performance, and asymmetry in youth judo athletes

Authors: David H. Fukuda, Kyle S. Beyer, Carleigh H. Boone, Ran Wang, Michael B. La Monica, Adam J. Wells, Jay R. Hoffman, Jeffrey R. Stout

Published in: Sport Sciences for Health | Issue 3/2018

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Abstract

Purpose

This study evaluated the contributions of somatic maturity (years from estimated peak height velocity) and training experience as developmental indicators of muscle morphology, biomechanical parameters, and bilateral asymmetries in youth judo athletes.

Methods

Twenty-six judo athletes aged 8–18 years (mean ± SD; age = 12.9 ± 2.6 years, maturity offset = − 0.6 ± 2.2 years, training experience = 6.1 ± 2.9 years) completed anthropometric measurements, performance testing, and ultrasound evaluation of the vastus lateralis.

Results

Somatic maturity had the greatest relationship with handgrip performance (r2 = 0.76–0.80; p < 0.01) and lower-body plyometric ability (r2 = 0.23–0.72; p < 0.05). Somatic maturity and training experience accounted for 72% of the variance in hopping power. Bilateral asymmetries in average/peak force and 1-/2-s force–time integration during isometric handgrip increased with training experience (r2 = 0.17–0.46 p < 0.05). Muscle morphology (r2 = 0.29–0.75; p < 0.01) was best related to somatic maturity. Significant differences were found between child and adolescent judo athletes in force–time curve parameters, muscle morphology, and plyometric ability.

Conclusions

These results indicate that somatic maturity and training experience exert unique influences on muscle morphology, biomechanical parameters, and bilateral asymmetries in youth judo athletes.
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Metadata
Title
Developmental associations with muscle morphology, physical performance, and asymmetry in youth judo athletes
Authors
David H. Fukuda
Kyle S. Beyer
Carleigh H. Boone
Ran Wang
Michael B. La Monica
Adam J. Wells
Jay R. Hoffman
Jeffrey R. Stout
Publication date
01-12-2018
Publisher
Springer Milan
Published in
Sport Sciences for Health / Issue 3/2018
Print ISSN: 1824-7490
Electronic ISSN: 1825-1234
DOI
https://doi.org/10.1007/s11332-018-0460-3

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