Effects of mental fatigue on exercise decision-making

Harris, Sheereen; Bray, Steven R.

doi:10.1016/j.psychsport.2019.04.005

Cited by 26 publications

(36 citation statements)

References 36 publications

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“…Though not correlated with the performance itself, perceptions of fatigue were associated with initial effort and affective responses during the KE endurance task. Our findings support recent observations following prior cognitive activity (Harris & Bray, 2019) and are also in line within findings within clinical populations (Prak et al., 2019). Disassociation of perceptions of fatigue, effort, and affect may be inherently difficult since all may reflect outcomes of the same integrated control process (Hockey, 2011).…”

Section: Discussionsupporting

confidence: 93%

“…While the association between perceived effort and volitional exercise behaviors is relatively well established (e.g., Christian, Bishop, Billaut, & Girard, 2014), understanding of the behavioral correlates of fatigue perceptions are less so. Recently, heightened perceptions of (mental) fatigue, evoked through demanding cognitive activity, were unrelated to subsequent self‐selected cycling intensities but were correlated with the level of effort perceived during the cycling bout (Harris & Bray, 2019). This may suggest that the subjective experience of fatigue does not directly influence behavior, however, may function indirectly, ultimately limiting exercise by making it feel more effortful.…”

Section: Introductionmentioning

confidence: 99%

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Interactions between perceptions of fatigue, effort, and affect decrease knee extensor endurance performance following upper body motor activity, independent of changes in neuromuscular function

et al. 2020

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Prior exercise has previously been shown to impair subsequent endurance performance in non-activated muscles. Declines in the neuromuscular function and altered perceptual/affective responses offer possible mechanisms through which endurance performance may be limited in these remote muscle groups. We thus conducted two experiments to better understand these performance-limiting mechanisms. In the first experiment, we examined the effect of prior handgrip exercise on the behavioral, perceptual, and affective responses to a sustained, sub-maximal contraction of the knee extensors. In the second experiment, transcranial magnetic stimulation was used to assess the neuromuscular function of the knee extensors before and after the handgrip exercise. The results of the first experiment demonstrated prior handgrip exercise increased the perceptions of effort and reduced affective valence during the subsequent knee extensor endurance exercise. Both effort and affect were associated with endurance performance. Subjective ratings of fatigue were also increased by the preceding handgrip exercise but were not directly related to knee extensor endurance performance. However, perceptions of fatigue were correlated with heightened effort perception and reduced affect during the knee extensor contraction. In the second experiment, prior handgrip exercise did not significantly alter the neuromuscular function of the knee extensors. The findings of the present study indicate that motor performance in the lower limbs following demanding exercise in the upper body appears to be regulated by complex, cognitive-emotional interactions, which may emerge independent of altered neuromuscular function. Subjective fatigue states are implicated in the control of perceptual and affective processes responsible for the regulation of endurance performance.

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Section: Discussionsupporting

confidence: 93%

Section: Introductionmentioning

confidence: 99%

Interactions between perceptions of fatigue, effort, and affect decrease knee extensor endurance performance following upper body motor activity, independent of changes in neuromuscular function

et al. 2020

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“…In our previous study, we evidenced complex emotional-cognitive interactions in the regulation of endurance performance, with the perception of fatigue correlated with both effort perceived and affective valence during the endurance task (Greenhouse-Tucknott et al, 2020). In keeping with our previous results, these relationships held following the adopted cognitive interventions, which is in line with the results reported by Harris and Bray (2019), who also recorded a relationship between perceived (mental) fatigue and subsequent effort perception during a bout of cycling. The perception of fatigue, independent of its exertional origin, may be implicated in the control of regulatory processes during subsequent physical activity.…”

Section: Discussionsupporting

confidence: 91%

“…effort) and affective processes (Greenhouse-Tucknott et al, 2020). Similar findings have previously been suggested following the inducement of mental fatigue (Harris & Bray, 2019), but this effect requires further validation. If the perception of fatigue is fundamentally the same irrespective of the domain of exertion (Kluger et al, 2013;Pattyn et al, 2018), with cognitive and physical exertion ultimately evoking the perception of fatigue through common processes, it may be expected that similar functions should hold across intervention domains (i.e.…”

Section: Introductionsupporting

confidence: 78%

Prolonged cognitive activity increases perception of fatigue but does not influence perception of effort, affective valence or performance during subsequent isometric endurance exercise.

Greenhouse-Tucknott¹,

Pickering²,

Butterworth³

et al. 2020

Preprint

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Mental fatigue has previously been reported to impair subsequent endurance performance. However, uncertainty regarding the veracity of this effect remains. Moreover, the effect of heightened perception of fatigue on common perceptual (i.e. effort) and affective modulators of endurance performance also requires further study. The present study therefore examined two hypotheses: (1) that mental fatigue impairs muscular endurance performance and (2) that the perception of fatigue evoked through sustained cognitive exertion is related to the degree of effort and affect reported during a subsequent endurance task. Eighteen participants performed an exhaustive, submaximal (20% maximal voluntary contraction, MVC) isometric contraction of the right knee extensor muscles, following both a protracted high and low cognitively demanding task. The high cognitive demand task (HIGH) evoked greater perceptions of fatigue and poorer cognitive performance. However, both endurance performance and perceptions of effort and affect recorded during the endurance task were not different between cognitive tasks. Significant correlations were found between perceptions of fatigue and both perceived effort and affective responses. In conclusion, mental fatigue did not impair muscular endurance performance nor influence perceived effort and affective responses. The observed relationships offer some support to the idea that fatigue perception reflects an overarching controller of performance regulatory processes. However, the absence of direct performance effects may indicate that fatigue perception following cognitive vs. physical exertion may emerge through distinct processes.

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“…Concerning physical performance, not all physical activities are negatively impacted by mental fatigue. While previous studies have shown that mental fatigue impaired endurance performance (e.g., Marcora et al, 2009;Pageaux et al, 2014) as well as decision making (e.g., Smith et al, 2016;Harris and Bray, 2019) and motor skills (e.g., Rozand et al, 2015;Le Mansec et al, 2018), the maximal voluntary force/power production capacity seems to be preserved (e.g., Pageaux et al, 2013;Duncan et al, 2015). To evaluate the effects of mental fatigue on motor skills, Rozand et al (2015) used an arm-pointing task consisting of reaching visual targets as fast as possible.…”

Section: Introductionmentioning

confidence: 99%

Persistence of Mental Fatigue on Motor Control

et al. 2021

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The effects of mental fatigue on both cognitive and physical performance are well described in the literature, but the recovery aspects of mental fatigue have been less investigated. The present study aimed to fill this gap by examining the persistence of mental fatigue on behavior and electrophysiological mechanisms. Fifteen participants performed an arm-pointing task consisting of reaching a target as fast as possible, before carrying out a 32-min cognitively demanding task [Time Load Dual Back (TLDB) task], and immediately, 10 and 20 min after completion of the TLDB task. During the experiment, electroencephalography was continuously recorded. The significant increase in mental fatigue feeling after the TLDB task was followed by a decrease during the 20 min of recovery without returning to premeasurement values. Brain oscillations recorded at rest during the recovery period showed an increase in both theta and alpha power over time, suggesting a persistence of mental fatigue. Arm-pointing movement duration increased gradually over time during the recovery period, indicating that behavioral performance remained impaired 20 min after the end of the cognitively demanding task. To conclude, subjective measurements indicated a partial recovery of mental fatigue following a cognitively demanding task, whereas electrophysiological and behavioral markers suggested that the effects of mental fatigue persisted for at least 20 min. While the subjective evaluation of mental fatigue is a very practical way to attest the presence of mental fatigue, electrophysiological and behavioral measures seem more relevant to evaluate the time course of mental fatigue effects.

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Effects of mental fatigue on exercise decision-making

Cited by 26 publications

References 36 publications

Interactions between perceptions of fatigue, effort, and affect decrease knee extensor endurance performance following upper body motor activity, independent of changes in neuromuscular function

Interactions between perceptions of fatigue, effort, and affect decrease knee extensor endurance performance following upper body motor activity, independent of changes in neuromuscular function

Prolonged cognitive activity increases perception of fatigue but does not influence perception of effort, affective valence or performance during subsequent isometric endurance exercise.

Persistence of Mental Fatigue on Motor Control

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