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Title: Isokinetic hamstrings-to-quadriceps peak torque ratio: the influence of sport modality, gender, and angular velocity
Authors: Andrade, Marilia Dos Santos [UNIFESP]
Barbosa de Lira, Claudio Andre
Koffes, Fabiana de Carvalho [UNIFESP]
Mascarin, Naryana Cristina [UNIFESP]
Benedito-Silva, Ana Amelia
Da Silva, Antonio Carlos [UNIFESP]
Universidade Federal de São Paulo (UNIFESP)
Universidade Federal de Goiás (UFG)
Universidade de São Paulo (USP)
Keywords: Isokinetic
lower extremity injuries
muscle imbalance
anterior cruciate ligament
Issue Date: 1-Jan-2012
Publisher: Taylor & Francis Ltd
Citation: Journal of Sports Sciences. Abingdon: Taylor & Francis Ltd, v. 30, n. 6, p. 547-553, 2012.
Abstract: The purpose of this study was to determine differences in hamstrings-to-quadriceps (H/Q) peak torque ratios evaluated at different angular velocities between men and women who participate in judo, handball or soccer. A total of 166 athletes, including 58 judokas (26 females and 32 males), 39 handball players (22 females and 17 males), and 69 soccer players (17 females and 52 males), were evaluated using an isokinetic dynamometer. the H/Q isokinetic peak torque ratios were calculated at angular velocities of 1.05 rad . s(-1) and 5.23 rad . s(-1). in the analysis by gender, female soccer players produced lower H/Q peak torque ratios at 1.05 rad . s(-1) than males involved in the same sport. However, when H/Q peak torque ratio was assessed at 5.23 rad . s(-1), there were no significant differences between the sexes. in the analysis by sport, there were no differences among females at 1.05 rad . s(-1). in contrast, male soccer players had significantly higher H/Q peak torque ratios than judokas (66 +/- 12% vs. 57 +/- 14%, respectively). Female handball players produced significantly lower peak torque ratios at 5.23 rad . s(-1) than judokas or soccer players, whereas males presented no ratio differences among sports At 5.23 rad . s(-1). in the analysis by velocity, women's muscular ratios assessed at 1.05 rad . s(-1) were significantly lower than at 5.23 rad . s(-1) for all sports; among men, only judokas presented lower ratios at 1.05 rad . s(-1) than at 5.23 rad . s(-1). the present results suggest that sport modality and angular velocity influence the isokinetic strength profiles of men and women.
ISSN: 0264-0414
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