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Revista Brasileira de Medicina do Esporte

Print version ISSN 1517-8692


BARBANERA, Márcia; ARAUJO, Rubens Correa; FERNANDES, Tulio Diniz  and  HERNANDEZ, Arnaldo Jose. Evaluation of the passive resistive torque in female athletes with ankle sprain. Rev Bras Med Esporte [online]. 2012, vol.18, n.2, pp.112-116. ISSN 1517-8692.

INTRODUCTION: The ankle sprain is one of the most common injuries in athletes. Direct evaluation of the ligament laxity can be obtained through the objective measurement of extreme passive inversion and eversion movements, but there are few studies on the use of the evaluation of the passive resistive torque of the ankle to assess the capsule and ligaments resistance. OBJECTIVE: The aim of this study was to compare the inversion and eversion passive torque in athletes with and without ankle sprains history. METHOD: 32 female basketball and volleyball athletes (16.06 ± 0.8 years old; 67.63 ± 8.17 kg; 177.8 ± 6.47 cm) participated in this study. Their ankles were divided into two groups: control group (29), composed by symptom-free ankles, and ankle sprain group, composed by ankles which have suffered injury (29). The resistive torque at maximum passive ankle movement was measured by the isokinetic dynamometer and the muscular activity by electromyography system. The athletes performed 2 repetitions of inversion and eversion movement at 5, 10 and 20°/s and the same protocol only at maximum inversion movement. RESULTS: The resistive passive torque during the inversion and eversion was lower in the ankle sprain group. This group also showed lower torques at the maximum inversion movement. No differences were observed between inversion and eversion movement. CONCLUSIONS: Ankle sprain leads to lower passive torque, indicating reduction of the resistance of the lateral ankle ligaments and mechanical laxity.

Keywords : joint instability; sports; ligaments.

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