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Mental Fatigue Impairs Intermittent Running Performance.

Mitchell R Smith1, Samuele M Marcora, Aaron J Coutts

  • 11Sport and Exercise Discipline Group, Faculty of Health, University of Technology Sydney, AUSTRALIA; and 2Endurance Research Group, School of Sport and Exercise Sciences, University of Kent at Medway, UNITED KINGDOM.

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Summary
This summary is machine-generated.

Mental fatigue negatively impacts intermittent running performance in athletes. This effect appears linked to an increased perception of effort during exercise.

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Area of Science:

  • Sports Science
  • Exercise Physiology
  • Cognitive Science

Background:

  • Mental fatigue is increasingly recognized as a factor influencing athletic performance.
  • Understanding its specific effects on intermittent running is crucial for team sports players.

Purpose of the Study:

  • To investigate the impact of mental fatigue on intermittent running performance in male team sports players.
  • To determine if mental fatigue affects physiological responses and perceived exertion during running.

Main Methods:

  • Ten male team sports players completed two intermittent running protocols after either a mental fatigue task (AX-CPT) or a control condition.
  • Measurements included running velocity, heart rate, oxygen consumption, blood glucose, lactate, and ratings of perceived exertion (RPE).
  • Subjective fatigue, vigor, and motivation were also assessed.

Main Results:

  • Mental fatigue significantly reduced low-intensity running velocity and overall oxygen consumption.
  • Despite lower velocities, perceived exertion during the running protocol was not significantly different, but session RPE was higher.
  • Subjective fatigue increased, while vigor and motivation remained unaffected.

Conclusions:

  • Mental fatigue impairs intermittent running performance, particularly at lower intensities.
  • The increased perception of effort, indicated by higher session RPE, may mediate this performance decrement.
  • These findings highlight the importance of managing mental fatigue in athletes.