Altered lower limb kinematics and muscle activities in soccer players with chronic ankle instability

Physical Therapy in Sport : Official Journal of the Association of Chartered Physiotherapists in Sports Medicine
Shun KunugiShumpei Miyakawa

Abstract

To examine the lower limb kinematics and muscle activities in diagonal single-leg rebound jump in soccer players with chronic ankle instability (CAI). Cross-sectional study. Laboratory. Thirty male collegiate soccer players participated: 15 with CAI were compared with 15 without CAI, matched by physical description. In the diagonal single-leg rebound jump, participants stood on one leg on a 30-cm high box, hopped down diagonally (45°) onto a force plate, and jumped vertically as high as possible with hands on their hips. Hip, knee, and ankle kinematics were acquired using a motion capture system. The activity of the gluteus medius, hip adductor, and lower leg muscles was recorded using electromyography. Jump performance was calculated using a force plate. The CAI group had (i) decreased hip adduction, knee flexion, external rotation, and dorsiflexion angle; (ii) reduced hip adductor and peroneus muscle activations; and (iii) reduced jump height and short flight time. Male collegiate soccer players with CAI showed altered kinematics and muscle activities during a diagonal single-leg rebound jump; this may adversely affect rebound jump performance.

Citations

Jul 2, 2020·The Journal of Sports Medicine and Physical Fitness·Jorge AredeNuno Leite
Jan 25, 2020·Medicine and Science in Sports and Exercise·Alexandra F DeJongJay Hertel
Apr 2, 2021·The Journal of Orthopaedic and Sports Physical Therapy·Robroy L MartinDominic Carreira

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