School of Kinesiology, Louisiana State University , Baton Rouge , LA , USA.
School of Kinesiology and Health Science, York University , Toronto , ON , Canada.
Eur J Sport Sci. 2019 Oct;19(9):1257-1266. doi: 10.1080/17461391.2019.1584249. Epub 2019 Mar 17.
A previous study showed prolonged cognitive-motor integration (CMI) deficits in youth with a history of concussion who were classified as asymptomatic by current return-to-play protocols, highlighting potential differences between clinical symptom recovery and skill recovery. The present study examines factors that may influence skilled performance recovery (defined as matching the skill level of no-concussion history peers) post-concussion in a similar cohort. Sixty-four asymptomatic youth ( = 13 yrs.) soccer, hockey, and lacrosse players with a concussion history ( = 14 months post-concussion) who returned to play and sixty-two age-matched team members with no previous concussion participated in this study. They performed two touchscreen-based eye-hand coordination tasks, including a direct interaction and a CMI task. We analysed the relationship between CMI performance and concussion history, and whether age, sex, number of concussions, and years of sport experience in their sport affected skill recovery. Individuals with concussion history and higher amounts of sport experience (7-12 years) reached a performance level matching their no-history peers quicker (after 12 months) than those with concussion history and lower sport experience (1-6 years; recovery after 30 months). This effect was independent of the number of concussions, age, and sex. The present results point towards an important role of eye-limb coordination-related sport experience in functional CMI recovery post-concussion. Youth with a concussion history but greater sport experience may have more skill-related motor "reserve". This reserve may directly aid in behavioural recovery post-concussion, or the greater neurological efficiency associated with athletic experience provides a compensatory mechanism that provides faster functional recovery.
先前的研究表明，在当前重返赛场的协议下被归类为无症状的有脑震荡病史的年轻人中，认知运动整合（CMI）的时间延长，这突出了临床症状恢复和技能恢复之间的潜在差异。本研究检查了在类似队列中，可能影响脑震荡后熟练表现恢复（定义为与无脑震荡史同龄人的技能水平相匹配）的因素。64 名无症状的有脑震荡病史的青年（ = 13 岁）足球、曲棍球和长曲棍球运动员（ = 14 个月脑震荡后）重返赛场，62 名年龄匹配的、无既往脑震荡的团队成员参加了这项研究。他们进行了两项基于触摸屏的眼手协调任务，包括直接交互和 CMI 任务。我们分析了 CMI 表现与脑震荡史之间的关系，以及年龄、性别、脑震荡次数和从事该运动的年数是否影响技能恢复。有脑震荡病史和较高运动经验（7-12 年）的个体比有脑震荡病史和较低运动经验（1-6 年）的个体更快地达到与无病史同龄人相匹配的表现水平（在 12 个月后）。这种影响与脑震荡次数、年龄和性别无关。目前的结果表明，眼-肢体协调相关的运动经验在脑震荡后 CMI 的功能恢复中起着重要作用。有脑震荡病史但运动经验较多的年轻人可能具有更多与技能相关的运动“储备”。这种储备可能直接有助于脑震荡后的行为恢复，或者与运动经验相关的更高的神经效率提供了一种补偿机制，从而更快地实现功能恢复。
