Response inhibition impairs subsequent self-paced endurance performance
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The aim of this study was to test the effects of mental exertion involving response inhibition on pacing and endurance performance during a subsequent 5-km running time trial.
After familiarization, 12 physically active subjects performed the time trial on a treadmill after two different cognitive tasks: (i) an incongruent Stroop task involving response inhibition (inhibition task) and (ii) a congruent Stroop task not involving response inhibition (control task). Both cognitive tasks were performed for 30 min.
Neither the inhibition nor the control task induced subjective feelings of mental fatigue. Nevertheless, time trial performance was impaired following the inhibition task (24.4 ± 4.9 min) compared to the control task (23.1 ± 3.8 min) because of a significant reduction in average running speed chosen by the subject. The response inhibition task did not affect pacing strategy, which was negative in both conditions. Heart rate and blood lactate responses to the time trial were not affected by the inhibition task, but subjects rated perceived exertion higher compared to the control condition (13.5 ± 1.3 vs 12.4 ± 1.3).
These findings show for the first time that 30 min of mental exertion involving response inhibition reduces subsequent self-paced endurance performance despite no overt mental fatigue. The impairment in endurance performance observed after the incongruent Stroop task seems to be mediated by the higher perception of effort as predicted by the psychobiological model of endurance performance.
KeywordsPerception of effort Time trial Mental fatigue Running Cognitive task Stroop task
Anterior cingulate cortex
Analysis of variance
Rating of perceived exertion
The authors thank Tiffany Weedon for her help with participant recruitment and data collection.
Conflict of interest
The authors declare that they have no conflicts of interest.
- Borg G (1998) Borg’s perceived exertion and pain scales. Human Kinetics, ChampaignGoogle Scholar
- Bush G, Whalen PJ, Rosen BR, Jenike MA, McInerney SC, Rauch SL (1998) The counting Stroop: an interference task specialized for functional neuroimaging: validation study with functional MRI. Hum Brain Mapp 6(4):270–282. doi: 10.1002/(SICI)1097-0193(1998)6:4<270:AID-HBM6>3.0.CO;2-0 PubMedCrossRefGoogle Scholar
- Lovatt D, Xu Q, Liu W, Takano T, Smith NA, Schnermann J, Tieu K, Nedergaard M (2012) Neuronal adenosine release, and not astrocytic ATP release, mediates feedback inhibition of excitatory activity. Proc Natl Acad Sci USA 109(16):6265–6270. doi: 10.1073/pnas.1120997109 PubMedCentralPubMedCrossRefGoogle Scholar
- Marcora SM (2010b) Effort: perception of. In: Goldstein EB (ed) Encyclopaedia of Perception. SAGE Publications Inc., Thousand Oaks, pp 380–383Google Scholar
- Stroop JR (1992) Studies of interference in serial verbal reactions (Reprinted from Journal Experimental-Psychology, vol 18, pp 643–662, 1935). J Exp Psychol Gen 121(1):15–23. doi: 10.1037/0096-34220.127.116.11