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In comparison, Schücker and MacMahon ( 8) found that 10 min of the Stroop task did not have a negative effect on beep test performance. For example, Brown and Bray ( 6) found a threshold effect for the Stroop task after 4–6 min of the Stroop task, there were negative effects on a handgrip endurance task. One key factor is that the length of the cognitive task is inconsistent throughout the literature in this area and has ranged from 3 min ( 12) to 90 min ( 9, 10), with different results depending on the study’s design.
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The inconsistent effects in this area are exemplified by Schücker and MacMahon ( 8), who found that active participants were not impeded in running the beep test, an externally paced 20-m shuttle run ( 11), after completing a demanding cognitive task. ( 10) showed that participants in a self-paced running task (3-km time trial) ran significantly slower in the exertion condition compared with the control condition. They found that participants withdrew from the physical task significantly earlier in the exertion condition compared with the control condition.
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#Average beep test scores trial
( 9) tested performance in a cycling time trial after a 90-min cognitive task compared with a control condition in which participants watched a 90-min documentary. Support for the finding that cognitive exertion has a negative impact on physical performance is exemplified in two key studies. In particular, this study sought to explore the influence of the length of the manipulation task, in follow-up from a previous study ( 8). Concomitant with the increasing amount of research in this topic are some inconsistencies, as researchers look to understand the complex interplay of factors, including the specific cognitive task used, the target physical task, and individual difference variables, such as training background and motivation (e.g., ). Indeed, the growth of interest in this topic is evidenced by a number of recent review articles (e.g., ) and a boom in the empirical work from a number of different subdisciplines (e.g., ).