Effect of mental fatigue on induced tremor in human knee extensors

Abstract

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The Effects of Mental Fatigue on Physical Performance: A Systematic Review

“…In two studies [10,21] the greater subjective fatigue was also associated with a decline of accuracy. An increase in reaction time over time was observed by Budini et al [34]. In the study of Brownsberger et al [12] the increase in mental fatigue was associated with an increase in -band activity of the prefrontal lobe.…”

“…peak torque, mean torque, time to half peak torque, time to peak torque and peak torque slope). Budini et al [34] on the contrary reported a decreased leg extension MVC (796 ± 150 N to 741 ± 137 N) after a 100-min mentally fatiguing task. Martin et al…”

“…Four studies assessed whether an impairment in MVC of the knee extensor muscles occurred after completing a mentally fatiguing task [17,20,37,34]. Both studies of Pageaux et al [17,20] revealed that the mentally fatiguing as well as the control task did not affect MVC torque.…”

“…On the other hand Duncan et al [36] assessed HR and Bla and found no difference due to mental fatigue. In the studies of Pageaux et al [17,20] and Budini et al [34] measures of peripheral and central fatigue were examined during a MVC. Pageaux et al [17,20] included single electrical stimulation in order to evaluate peak twitch, time to peak twitch and half-relaxation time.…”

“…In both studies [17,20] no effects of mental fatigue on peripheral parameters of neuromuscular function (peak twitch, time to peak twitch and half-relaxation time) or on central parameters (voluntary activation level) were observed [17,20]. Budini et al [34] made use of two springs with a different stiffness to induce two specific tremors during a 20-s 30%-MVC. One spring induced a 9-Hz frequency oscillation (associated with the peripheral component of the stretch reflex) and another a 5-Hz (associated with the central component of the stretch reflex).…”