Background

Using a laboratory-based exercise task, this study investigated objective exercise performance as well as expectations, anxiety and perceived task performance ratings in adolescents with CFS compared to healthy controls and illness controls.

Method

Trials of a sit-stand exercise task (SST) were undertaken (CFS: n = 61, asthma (AS): n = 31, healthy adolescents (HC): n = 78). Adolescents rated their expectations, pre- and post-task anxiety, and perceived task difficulty. Their parents independently rated their performance expectations of their child.

Results

The CFS group took significantly longer to complete the SST than the AS group (MD 3.71, 95% CI [2.41, 5.01] p < .001) and HC (MD 3.61, 95% CI [2.41, 4.81], p < .001). Adolescents with CFS had lower expectations for their performance on the exercise task than AS participants (MD -11.79, 95% CI [−22.17, −1.42] p = .022) and HC (MD -15.08, 95% CI [−23.01, −7.14] p < .001). They rated their perceived exertion as significantly greater than AS (MD 3.04, 95% CI [1.86, 4.21] p < .001) and HC (MD 2.98, 95% CI [1.99, 3.98], p < .001). The CFS group reported greater anxiety pre-task than AS (MD 14.11, 95% CI [5.57, 22.65] p < .001) and HC (MD 11.19, 95% CI [2.64, 19.75], p. = 007). Parental group differences showed similar patterns to the adolescents’'.

Conclusions

Lower expectations and greater anxiety regarding exercise may reflect learning from previous difficult experiences which could impact future exercise performance. Further examination of pre-exercise expectations and post-exercise appraisals could improve our understanding of the mechanisms by which fatigue is maintained.

中文翻译：

---

患有 CFS 的青少年对运动的预期和反应：一项实验研究

背景

本研究使用基于实验室的运动任务，调查了与健康对照和疾病对照相比，患有 CFS 的青少年的客观运动表现以及期望、焦虑和感知任务表现评级。

方法

进行了坐立运动任务 (SST) 的试验（CFS：n  = 61，哮喘 (AS)：n  = 31，健康青少年 (HC)：n  = 78）。青少年对他们的期望、任务前和任务后的焦虑以及感知到的任务难度进行评分。他们的父母独立评估他们对孩子的表现期望。

结果

CFS 组完成 SST 的时间明显长于 AS 组 (MD 3.71, 95% CI [2.41, 5.01] p  < .001) 和 HC (MD 3.61, 95% CI [2.41, 4.81], p < .001) ）。与 AS 参与者 (MD -11.79, 95% CI [-22.17, -1.42] p  = .022) 和 HC (MD -15.08, 95% CI [-23.01, −7.14] p  < .001）。他们认为自己的运动量明显高于 AS (MD 3.04, 95% CI [1.86, 4.21] p  < .001) 和 HC (MD 2.98, 95% CI [1.99, 3.98], p < .001）。CFS 组报告的任务前焦虑程度高于 AS (MD 14.11, 95% CI [5.57, 22.65] p < .001) 和 HC (MD 11.19, 95% CI [2.64, 19.75], p. = 007)。父母群体的差异显示出与青少年相似的模式。

结论

对运动的较低期望和更大的焦虑可能反映了从以前的困难经历中学习，这可能会影响未来的运动表现。进一步检查运动前的期望和运动后的评估可以提高我们对维持疲劳的机制的理解。