Navegando por Palavras-chave "athletic injuries"

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    Profile of isokinetic eccentric-to-concentric strength ratios of shoulder rotator muscles in elite female team handball players
    (Taylor & Francis Ltd, 2010-01-01) Andrade, Marilia Dos Santos [UNIFESP]; Fleury, Anna Maria [UNIFESP]; Barbosia de Lira, Claudio Andre; Dubas, Joao Paulo [UNIFESP]; Silva, Antonio Carlos da [UNIFESP]; Universidade Federal de São Paulo (UNIFESP); Universidade Federal de Goiás (UFG)
    The purpose of this study was to establish the isokinetic profile of shoulder rotator muscles strength in female handball players. Twenty-seven handball players performed concentric and eccentric strength tests of both dominant and non-dominant upper limbs on an isokinetic dynamometer. Internal and external rotator muscles peak torque was assessed at 1.05, 3.14, and 5.23 rad center dot s-1 in concentric mode and at 3.14 and 5.23 rad center dot s-1 in eccentric mode. Concentric balance ratio and functional ratio were obtained. Bi-lateral deficiency was compared. Concentric strength for internal and external rotation was significantly greater for the dominant than for the non-dominant limb for all speeds (P0.0001). for eccentric actions, internal rotator muscles were stronger in the dominant than the non-dominant limb (P0.0001) at both speeds. Concentric balance and functional balance ratios did not differ between sides at 3.14 rad center dot s-1 (P=0.1631), but at 5.23 rad center dot s-1 the functional balance ratio in the dominant limb was lower than for the non-dominant limb (P=0.0500). Although the dominant side was stronger than the non-dominant side, balance concentric ratios remained the same, with only the functional strength ratio different at 5.23 rad center dot s-1. Our results suggest that concentric strength exercises be used for internal and external rotators on the non-dominant side, and functional exercise that improves eccentric rotation strength for prevention programmes.
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    Shoulder isokinetic profile of male handball players of the Brazilian National Team
    (Associação Brasileira de Pesquisa e Pós-Graduação em Fisioterapia, 2013-12-01) Andrade, Marilia dos Santos [UNIFESP]; Vancini, Rodrigo Luiz [UNIFESP]; Lira, Claudio Andre Barbosa de; Mascarin, Naryana Cristina [UNIFESP]; Fachina, Rafael J. F. G.; Silva, Antonio Carlos da [UNIFESP]; Universidade Federal de São Paulo (UNIFESP); Universidade Federal de Goias Human and Exercise Physiology Sector; Universidade Estadual de Campinas (UNICAMP); Brazilian Basketball Confederation
    BACKGROUND:Data obtained on an isokinetic dynamometer are useful to characterize muscle status and have been reported in muscle imbalance studies in different types of sport. However, few studies have assessed elite handball players to establish reference values.OBJECTIVE:The purpose of this study was to compare, for the dominant (D) and non-dominant (ND) side, the isokinetic profile of shoulder rotator muscle strength between male handball players (H) and asymptomatic non-athletes (NA).METHOD:Isokinetic concentric and eccentric strength tests for D upper limbs were performed by the H group (n=20) and the NA group (n=12). Internal and external rotator muscle peak torque in concentric action was assessed at 60°/s and 300°/s and in eccentric action at 300°/s. We also calculated conventional balance (the ratio of external rotator peak torque to internal rotator peak torque in concentric action) and functional balance (the ratio of external rotator peak torque in eccentric action to internal rotator peak torque in concentric action).RESULTS:In the H group, dominant limbs were stronger in concentric action for external rotation at 60 and 300°/s. The conventional balance ratio for the D side was significantly lower at 60 and 300°/s for H compared to NA. The functional ratio for the D side was significantly lower at 300º/s for H compared to NA.CONCLUSIONS:Compared to asymptomatic non-athletes, handball players presented significant muscular imbalance resulting from daily sports practice, a known risk factor for shoulder injuries.