Unilateral and ipsilateral strength asymmetries in elite youth soccer players with respect to muscle group and limb dominance

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11510%2F16%3A10336964" target="_blank" >RIV/00216208:11510/16:10336964 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.4067/S0717-95022016000400027" target="_blank" >http://dx.doi.org/10.4067/S0717-95022016000400027</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.4067/S0717-95022016000400027" target="_blank" >10.4067/S0717-95022016000400027</a>

Result language

angličtina

Original language name

Unilateral and ipsilateral strength asymmetries in elite youth soccer players with respect to muscle group and limb dominance

Original language description

The purpose was to compare knee extensors and flexors' strength in sedentary children and detect its differences with respect to gender and lower limb dominancy. The group of untrained children (boys: n = 20, age = 14.5 +- 0.2 years, height = 171.1 +- 5.3cm, weight = 60.4 +- 20.3 cm, girls: n = 18, age = 11.6 +- 0.4 years, height = 163.5 +- 5.0 cm, weight = 55.2 +- 8.9 cm) was tested on the Cybex isokinetic dynamometer at 60 o.s-1 for the dominant (DL) and non-dominant leg (NL) in concentric contraction. Univariate ANOVA (2x2) with two between subject effects (gender (G), laterality (L)) was used for evaluation of peak torque (PT) differences between the factors for extensors or flexors. Strength of knee extensors (PTE) and flexors (PTF) was significantly different depending on gender (PTE: F1,76 = 23.92, p < .01, ηp2 = .25; PTF: F1,76 = 17.81 p < .01, ηp2 = .20). Limb dominance had an insignificant effect on the level of both PTE (F1,76 = 0.94, p > .05, ηp2 = .01) and PTF (F1,76 = 0.48, p > .05, ηp2 = .01). The interaction effect between velocity and gender was insignificant (p > .05). Bilateral strength deficit between the limbs (Q:Q) was 7.27 % in boys and 1.78 % in girls. Concerning knee flexors, the bilateral deficit in boys was 5.39 % while in girls it was 3.41 %. The unilateral ratio (H:Q) in boys was 50.28 % (DL) and 51.31 % (NL). The girls achieved a lower unilateral ratio in comparison to the boys (49.74 % - DL and 48.92 % - NL). Early identification of muscle imbalances and their compensation using verified intervention procedures should be a part of movement intervention at schools, sports clubs and free time activities in youth age with the aim of early elimination of the detected maladaptive effects.

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

AK - Sport and leisure time activities

OECD FORD branch

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Project

<a href="/en/project/GA16-21791S" target="_blank" >GA16-21791S: Identification, differentiation and discrimination of maladaptive processes in children and youth</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2016

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

International Journal of Morphology [online]

ISSN

0717-9502

e-ISSN

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Volume of the periodical

34

Issue of the periodical within the volume

4

Country of publishing house

CL - CHILE

Number of pages

6

Pages from-to

1339-1344

UT code for WoS article

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EID of the result in the Scopus database

2-s2.0-85011388668