运动员脑震荡后和健康对照个体在跳跃着陆任务中的运动模式。
Movement Patterns During a Jump-Landing Task in Athletes After Sport-Related Concussion and Healthy Control Individuals.
机构信息
Texas Health Sports Medicine, Fort Worth, TX.
Orthopedic Specialty Associates, Fort Worth, TX.
出版信息
J Athl Train. 2021 Dec 1;56(12):1306-1312. doi: 10.4085/533-20.
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 nondominant limbs. Independent t tests 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°, P = .01) but not the nondominant (-8.30 ± 4.91°, 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.
背景
运动相关性脑震荡（SRC）与下肢损伤之间的关系在文献中已经得到充分证实。
目的
确定在 SRC 后已获准重返运动的运动员与健康匹配对照组个体在双下肢跳跃着陆时是否存在生物力学差异。
设计
横断面研究。
设置
基于医疗系统的门诊运动医学中心。
患者或其他参与者
共有 21 名 SRC 患者（年龄=15.38±1.77 岁，身高=169.23±8.59cm，体重=63.43±7.39kg，从 SRC 恢复到重返运动的时间=16.33±12.7 天）与 21 名年龄、性别和活动匹配的健康对照组参与者（年龄=15.36±1.73 岁，身高=169.92±11.1cm，体重=65.62±12.08kg）进行比较。
主要观察指标
使用运动捕捉系统和测力板评估双下肢跳跃着陆时的生物力学性能。使用 3 次连续试验的平均值计算下肢关节动力学和运动学。感兴趣的变量为优势和非优势肢体的膝关节内伸肌力矩、膝关节内旋力矩和矢状面总膝关节位移。对 SRC 和对照组的感兴趣变量进行独立 t 检验。
结果
组间描述性数据无差异。SRC 组在优势（-0.028±0.009 Nm/kg，P=0.003）和非优势（-0.018±0.007，P=0.02）肢体中表现出更大的膝关节内伸肌力矩。SRC 组在优势（0.012±0.004 Nm/kg，P=0.005）和非优势（0.010±0.003，P=0.005）肢体中也表现出更大的膝关节内旋力矩。对于矢状面膝关节位移，SRC 组在优势（-12.56±4.67°，P=0.01）但非优势（-8.30±4.91°，P=0.10）肢体中表现出较小的膝关节屈曲位移。
结论
与健康匹配的对照组参与者相比，获准重返运动的 SRC 运动员着陆时膝关节外翻角度更大。
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