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Mental, physical, … fatigue is experienced in many ways, nevertheless little is known on how these different forms of fatigue interact. The interest in the interaction between mental and physical fatigue rose a couple of years ago, with Marcora and colleagues publishing some interesting results in 2009. They reported a decrease in physical performance due to a 90min mentally fatiguing task, however no differences were found in the classical peripheral parameters (heart rate, blood lactate, cardiac output) that could explain the decrease in physical performance. Therefore the search for the link between both forms of fatigue could begin and this research line was developed.
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