PURPOSE To determine the effect of exercise on cognitive and motor performance and the subsequent test-retest reliability of a novel dual-task (DT) assessment in non-concussed college students. METHODS Sixty (53.3% female) non-concussed college students with an average age (+standard deviation) of 20.5 ± 1.34 years, height = 171.7 ± 9.33 cm, mass = 69.3 ± 12.23 kg). Participants were assigned to an exercise (n = 30) or rest (n = 30) intervention group and completed two study visits that were separated by a two-week test-retest interval. At each visit, participants completed a novel DT assessment that consisted of the concurrent administration of the Standardized Assessment of Concussion (SAC) and tandem gait (TG) prior to the exercise or rest intervention. Following the DT assessment at the first visit, participants in the exercise group performed moderate intensity exercise while the rest group sat quietly for 30 minutes. Following the intervention, both groups were readministered the DT assessment. At the second visit, the same procedures were followed except for each group was administered the opposite intervention (e.g., the exercise group completed the rest intervention). A composite TG (cTG) score was calculated by summing the average time to complete the TG pattern during each SAC domain (immediate memory, digits backwards, months in reverse order, delayed recall). A one-way analysis of covariance (ANCOVA) was conducted to assess post-intervention differences while controlling for pre-intervention performance. Test-retest reliability was assessed using intraclass correlation coefficients (ICC3,2) with 95% confidence intervals with all analyses performed with α = 0.05. RESULTS SAC and cTG performance was similar (p's > 0.05) from pre- to post-intervention for the rest or exercise protocols. Good (rest:ICC = 0.77[0.62,0.87]; exercise: ICC = 0.84[0.73,0.90]) and excellent (rest: ICC = 0.97[0.94,0.98]; exercise: ICC = 0.93[0.88,0.96]) test-retest reliability were observed for the SAC composite score and cTG score, respectively. CONCLUSIONS Our DT assessment was robust to the influence of moderate intensity exercise and demonstrated good-to-excellent test-retest reliability in a healthy collegiate sample.

中文翻译：

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运动对运动脑震荡新型双任务评估的影响。

目的 确定运动对非脑震荡大学生认知和运动表现的影响，以及新型双任务 (DT) 评估的后续重测可靠性。方法 60 名（53.3% 女性）非脑震荡大学生，平均年龄（+标准差）为 20.5 ± 1.34 岁，身高 = 171.7 ± 9.33 cm，体重 = 69.3 ± 12.23 kg。参与者被分配到运动干预组 (n = 30) 或休息干预组 (n = 30)，并完成两次研究访问，两次研究访问间隔为两周的重测间隔。每次访视时，参与者都完成了一项新颖的 DT 评估，其中包括在运动或休息干预之前同时进行标准化脑震荡评估 (SAC) 和串联步态 (TG)。在第一次访视时进行 DT 评估后，运动组的参与者进行中等强度的运动，而其余组则安静地坐 30 分钟。干预后，两组均重新进行 DT 评估。在第二次访视时，遵循相同的程序，除了每组进行相反的干预（例如，运动组完成休息干预）。综合 TG (cTG) 分数是通过对每个 SAC 域（立即记忆、数字倒序、逆序几个月、延迟回忆）完成 TG 模式的平均时间求和来计算的。进行单向协方差分析（ANCOVA）以评估干预后的差异，同时控制干预前的表现。使用组内相关系数 (ICC3,2) 评估重测可靠性，置信区间为 95%，所有分析均以 α = 0.05 进行。结果 对于休息或运动方案，从干预前到干预后，SAC 和 cTG 表现相似（p > 0.05）。良好（休息：ICC = 0.77[0.62,0.87]；练习：ICC = 0.84[0.73,0.90]）和优秀（休息：ICC = 0.97[0.94,0.98]；练习：ICC = 0.93[0.88,0.96]）测试-分别观察SAC综合评分和cTG评分的重测可靠性。结论 我们的 DT 评估对于中等强度运动的影响是稳健的，并且在健康大学样本中表现出良好到优秀的重测可靠性。