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首页> 外文期刊>Journal of athletic training >Movement Patterns During a Jump-Landing Task in Athletes After Sport-Related Concussion and Healthy Control Individuals
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Movement Patterns During a Jump-Landing Task in Athletes After Sport-Related Concussion and Healthy Control Individuals

机译：Movement Patterns During a Jump-Landing Task in Athletes After Sport-Related Concussion and Healthy Control Individuals

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Context: A relationship between a history of sport-related concussion (SRC) and lower extremity injury has been well established in the literature. Objective: To determine if biomechanical differences existed during a double-limb jump landing between athletes who had been released to return to play after SRC and healthy matched control individuals. Design: Cross-sectional study. Setting: Health system-based outpatient sports medicine center. Patients or Other Participants: A total of 21 participants with SRC (age = 15.38 +/- 1.77 years, height = 169.23 +/- 8.59 cm, mass = 63.43 +/- 7.39 kg, time since release to return to sport after SRC = 16.33 +/- 12.7 days) were compared with 21 age-, sex-, and activity-matched healthy participants serving as controls (age = 15.36 +/- 1.73 years, height =169.92 +/- 11.1 cm, mass = 65.62 +/- 12.08 kg). Main Outcome Measure(s): Biomechanical performance during the double-limb jump landing was assessed using a motion-capture system and force plates. The average of 3 consecutive trials was used to calculate lower extremity joint kinetics and kinematics. The variables of interest were internal knee-extension moment, internal varus moment, and total sagittal-plane knee displacement for the dominant and nondom-inant limbs. Independent ttests were performed to examine the differences between SRC and control groups for the variables of interest. Results: No differences existed between groups for the descriptive data. The SRC group demonstrated greater internal knee-extension moments in the dominant (-0.028 +/- 0.009 Nm/kg, P= .003) and nondominant (-0.018 +/- 0.007, P= .02) limbs. The SRC group also exhibited greater internal varus moments in the dominant (0.012 +/- 0.004 Nm/kg, P= .005) and nondominant (0.010 +/- 0.003, P = .005) limbs. For sagittal-plane knee displacement, the SRC group displayed less knee-flexion displacement in the dominant (-12.56 +/- 4.67 degrees, P = .01) but not the nondominant (-8.30 +/- 4.91 degrees, P= .10) limb. Conclusions: Athletes who had been released for return to sport after SRC landed with greater knee valgus than healthy matched control participants.

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