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Anticipating increased task difficulty in running trials led runners to conserve pace. This suggests conscious decisions to manage effort and maintain well-being influence endurance pacing strategies.

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Area of Science:

  • Exercise Physiology
  • Sports Psychology
  • Human Performance

Background:

  • Self-paced endurance performance models highlight the role of endpoint knowledge in pacing decisions.
  • Limited research exists on how anticipated task difficulty affects pacing in equidistant endurance activities.

Purpose of the Study:

  • To investigate the impact of anticipated task difficulty on pacing, psychological, and physiological responses during running time trials.

Main Methods:

  • Twenty-eight trained runners completed three 3000-m self-paced treadmill time trials.
  • Conditions included a baseline, a known incline (7% for final 800m), and an unknown incline (deceptively presented as 0%).

Main Results:

  • Running speed was 2.44% slower in the first 2200m of the known incline trial compared to the unknown incline trial.
  • Effort perception, affective valence, heart rate, and blood lactate did not differ between conditions.
  • Initial pacing in the known incline trial correlated with motivation, vigor, perceived effort, and affective valence.

Conclusions:

  • Anticipated increases in task difficulty promote pace conservation in endurance running.
  • This pace adjustment may stem from task uncertainty and conscious decisions to conserve energy and maintain a positive affective state.
  • Findings enhance understanding of pacing influences and offer strategies to mitigate negative effects of anticipated difficulty.