"This study investigates whether the length of time spent on a mentally demanding task affects brain activity and jumping performance in physically active young men. Twelve healthy male university students, all regularly engaged in sport, completed four separate testing sessions on different days, each at least 72 hours apart. In one session (the control condition), participants watched a calm nature documentary. In the other three sessions, mental fatigue was induced by having participants perform a demanding attention task (the Stroop color-word test) continuously for 10, 15, or 30 minutes. Before and after each session, brain activity was recorded using electroencephalography (EEG), a painless method that measures electrical activity through sensors placed on the scalp. Immediately afterward, participants performed a countermovement jump test, a standard measure of explosive leg power used in sports science. The study examines whether longer periods of mental fatigue produce progressively larger changes in brain activity and jump performance, and whether changes in brain activity are related to changes in jumping ability. The findings may help athletes, coaches, and students better understand how mentally tiring activities, such as studying or exams, could affect physical performance shortly afterward."
Age range
18 Years – 30 Years
Sex
MALE
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A starting point for the conversation — always confirm anything about your own eligibility, costs, and care with the study team and your doctor.
Countermovement Jump (CMJ) Height
Timeframe: Immediately after completion of each experimental protocol (control, and 10-, 15-, and 30-minute Stroop-task mental fatigue conditions); sessions were separated by a minimum 72-hour washout period.