It is often assumed that distracting attention from unpleasant body sensations evoked by physical exertion can alleviate perceived fatigue and increase physical performance. Also, the higher acuity of perception of heartbeats was associated with less physical performance in one study with sedentary participants. The current study was designed to shed more light on these associations. In a within-subject experiment, 98 students characterized by regular physical activity completed the Schandry-task assessing cardioceptive accuracy and cycled for 15 min on a bicycle ergometer at a convenient pace, listening to their own breathing through a headset (internal attention condition) or to distracting noises (external attention condition). Physical performance (number of pedal turns), physical exertion (heart rate), and self-reported fatigue were assessed for both tasks. Frequentist and Bayesian analyses showed no impact of the direction of attention and cardioceptive accuracy on physical performance, exertion, and perceived fatigue. In fact, the lack of association between cardioceptive accuracy and performance and perceived fatigue was more probable than the alternative hypothesis. Impact of distraction and cardioceptive accuracy on subjective and objective characteristics of physical exercise in the aerobic domain may be different for physically active and sedentary individuals. Future research in this area should systematically explore the background of these differences.

中文翻译：

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在有规律的体育活动的个体样本中，身体焦点和心脏感受的准确性与身体表现和感知疲劳无关

人们通常认为，将注意力从体力消耗引起的不愉快身体感觉上分散注意力可以减轻感知疲劳并提高身体机能。此外，在一项针对久坐参与者的研究中，较高的心跳感知敏锐度与较低的身体表现有关。目前的研究旨在进一步阐明这些关联。在一项学科内实验中，98 名以有规律的体育活动为特征的学生完成了评估心电准确性的 Schandry 任务，并在自行车测力计上以方便的速度骑自行车 15 分钟，通过耳机听自己的呼吸（内部注意力条件）或分散注意力的噪音（外部注意力状况）。身体表现（踏板转数），体力消耗（心率），两项任务都评估了自我报告的疲劳。频率学和贝叶斯分析表明，注意力的方向和心脏感受的准确性对身体表现、劳累和感知疲劳没有影响。事实上，与替代假设相比，心感受器准确性和表现与感知疲劳之间缺乏关联的可能性更大。对于身体活跃和久坐的个体，分心和心感受器准确性对有氧运动的主观和客观特征的影响可能不同。该领域的未来研究应该系统地探索这些差异的背景。事实上，与替代假设相比，心感受器准确性和表现与感知疲劳之间缺乏关联的可能性更大。对于身体活跃和久坐的个体，分心和心感受器准确性对有氧运动的主观和客观特征的影响可能不同。该领域的未来研究应该系统地探索这些差异的背景。事实上，与替代假设相比，心感受器准确性和表现与感知疲劳之间缺乏关联的可能性更大。对于身体活跃和久坐的个体，分心和心感受器准确性对有氧运动的主观和客观特征的影响可能不同。该领域的未来研究应该系统地探索这些差异的背景。