Assimetria bilateral no torque isocinético do joelho e tornozelo em jogadores de futebol da categoria sub 20

Silva, José Raphael Leandro Costa; Detanico, Daniele; Pupo, Juliano Dal; Freitas, Cíntia de la Rocha

doi:10.5007/1980-0037.2015v17n2p195

Cited by 21 publications

(2 citation statements)

References 20 publications

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“…Whilst these factors must be given careful consideration when measuring asymmetry, it is difficult to argue against the importance of strength and power in almost all athletes. Measuring asymmetry during strength tasks has been conducted using the back squat [5], isokinetic dynamometry [6,7,8], and isometric tasks such as the mid-thigh pull or isometric squat [9,10,11]. In addition, strength asymmetry (typically peak force or torque) have been shown to be negatively correlated with jump performance [9], speed and change-of-direction speed (CODS) [8], and kicking accuracy [11].…”

Section: Introductionmentioning

confidence: 99%

Drop Jump Asymmetry is Associated with Reduced Sprint and Change-of-Direction Speed Performance in Adult Female Soccer Players

Bishop

Turner

Maloney

et al. 2019

Sports

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Studies that examine the effects of inter-limb asymmetry on measures of physical performance are scarce, especially in adult female populations. The aim of the present study was to establish the relationship between inter-limb asymmetry and speed and change-of-direction speed (CODS) in adult female soccer players. Sixteen adult players performed a preseason test battery consisting of unilateral countermovement jump (CMJ), unilateral drop jump (DJ), 10 m, 30 m, and 505 CODS tests. Inter-limb asymmetry was calculated using a standard percentage difference equation for jump and CODS tests, and Pearson’s r correlations were used to establish a relationship between asymmetry and physical performance as well as asymmetry scores themselves across tests. Jump-height asymmetry from the CMJ (8.65%) and DJ (9.16%) tests were significantly greater (p < 0.05) than asymmetry during the 505 test (2.39%). CMJ-height asymmetry showed no association with speed or CODS. However, DJ asymmetries were significantly associated with slower 10 m (r = 0.52; p < 0.05), 30 m (r = 0.58; p < 0.05), and 505 (r = 0.52–0.66; p < 0.05) performance. No significant relationships were present between asymmetry scores across tests. These findings suggest that the DJ is a useful test for detecting existent between-limb asymmetry that might in turn be detrimental to speed and CODS performance. Furthermore, the lack of relationships present between different asymmetry scores indicates the individual nature of asymmetry and precludes the use of a single test for the assessment of inter-limb differences.

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Section: Introductionmentioning

confidence: 99%

Drop Jump Asymmetry is Associated with Reduced Sprint and Change-of-Direction Speed Performance in Adult Female Soccer Players

Bishop

Turner

Maloney

et al. 2019

Sports

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“…Soccer players are continuously performing high-intensity actions, such as jumps, accelerations, decelerations, and changes of direction [1]. However, these skill executions often occur in different volumes between one leg and the other [2]. Therefore, betweenlimb asymmetries research is of increasing relevance nowadays in many sports [3,4].…”

Section: Introductionmentioning

confidence: 99%

Comparison of Three Eccentric Overload Training Strategies on Power Output and Interlimb Asymmetry in Youth Soccer Players

Moreno-Azze

Arjol-Serrano

Miguel

et al. 2021

IJERPH

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Background: The present study compared the effects of performing the lateral squat exercise in three different formats from eccentric overload training on concentric/eccentric peak/mean power and inter-limb asymmetries in young soccer players. Methods: Forty-five young male (U-17) soccer players were distributed into three groups. Two groups performed the same training volume with both legs, beginning with the weaker leg (SVW, n = 15) or with the stronger leg (SVS, n = 15). The third group executed double volume with the weaker leg and also commenced with such leg (DVW, n = 15) in the lateral squat during a 10-week period. Pre- and post-intervention metrics included concentric and eccentric peak/mean power during the lateral squat test and their corresponding asymmetries. Results: All groups improved all power variables. Concentric mean and peak power asymmetry were substantially reduced in the SVW (ES: 0.89), DVW (ES: 0.43), and in SVW (ES: 1.60). Eccentric mean and peak power asymmetry were also substantially decreased in SVW (ES: 0.81) and in DVW (ES: 0.68). Between-group analyses showed substantially better performance in concentric and eccentric variables with stronger and weaker legs in SVW and DVW groups compared with SVS. Conclusions: Those groups which started with the weaker leg showed greater both power enhancements and reductions on inter-limb asymmetries.

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Isokinetic performance of knee extensors and flexors in adolescent male soccer athletes

et al. 2017

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Assimetria bilateral no torque isocinético do joelho e tornozelo em jogadores de futebol da categoria sub 20

Abstract: Bilateral asymmetry of knee and ankle isokinetic torque in soccer players u20 category Assimetria bilateral no torque isocinético do joelho e tornozelo em jogadores de futebol da categoria sub 20

Cited by 21 publications

References 20 publications

Drop Jump Asymmetry is Associated with Reduced Sprint and Change-of-Direction Speed Performance in Adult Female Soccer Players

Drop Jump Asymmetry is Associated with Reduced Sprint and Change-of-Direction Speed Performance in Adult Female Soccer Players

Comparison of Three Eccentric Overload Training Strategies on Power Output and Interlimb Asymmetry in Youth Soccer Players

Isokinetic performance of knee extensors and flexors in adolescent male soccer athletes

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