Altered lower limb kinematics and muscle activities in soccer players with chronic ankle instability. (November 2018)

• Record Type: Journal Article
• Authors: Kunugi, Shun; Masunari, Akihiko; Koumura, Takashi; Fujimoto, Akihisa; Yoshida, Naruto; Miyakawa, Shumpei
• Is Part Of: Physical therapy in sport. Volume 34(2018)
• Page Start: 28
• Page End: 35
• Publication Date: 2018-11
• Subjects: Chronic ankle instability -- Lower limb kinematics -- Muscle activity -- Diagonal rebound jump; Sports physical therapy -- Periodicals; Sports injuries -- Patients -- Rehabilitation -- Periodicals; Athletic Injuries -- diagnosis -- Periodicals; Athletic Injuries -- therapy -- Periodicals; Physical Therapy -- Periodicals; Sports Medicine -- Periodicals; 615.82088796
• DOI: 10.1016/j.ptsp.2018.08.003
• Languages: English
• ISSNs: 1466-853X

Abstract

Abstract: Objective: To examine the lower limb kinematics and muscle activities in diagonal single-leg rebound jump in soccer players with chronic ankle instability (CAI). Design: Cross-sectional study. Setting: Laboratory. Participants: Thirty male collegiate soccer players participated: 15 with CAI were compared with 15 without CAI, matched by physical description. Intervention(s): 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. Main outcome measures: 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. Results: 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. Conclusions: 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. Highlights: Chronic ankle instability (CAI) affects diagonal single-leg rebound jump. Adduction angle and hip adductor activation are reduced. Altered knee and ankle sagittal plane kinematics adversely affect performance.