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Influence of Step-Width Manipulation on Running Biomechanics
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Backyard running: Pushing the boundaries of human performance.

Kevin De Pauw1,2, T Ampe1, Y L Arenales Arauz1,2

  • 1Human Physiology and Sports Physiotherapy Research Group (MFYS), Vrije Universiteit Brussel (VUB), Brussel, Belgium.

European Journal of Sport Science
|September 14, 2024
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Backyard ultrarunning impacts cognitive function, slowing reaction times post-event. Physiological resilience varies among runners, suggesting targeted strategies could improve ultraendurance performance.

Keywords:
backyard runningcognitive performanceendurance performancephysiological resilienceultra‐running

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Area of Science:

  • Sports Science
  • Exercise Physiology
  • Cognitive Neuroscience

Background:

  • Ultrarunning, particularly backyard formats, is increasingly popular.
  • Limited research exists on the physiological and psychological demands of backyard ultrarunning.

Purpose of the Study:

  • To investigate cognitive function, physiological resilience, and running performance during a backyard ultrarunning event.
  • To identify factors influencing performance in this unique ultraendurance discipline.

Main Methods:

  • Twelve male ultrarunners underwent cognitive testing before, during, and after the event.
  • Physiological markers (heart rate, blood lactate, rating of perceived exertion) and running performance (laps, speed) were monitored.
  • Physiological resilience was estimated using heart rate and speed ratios.

Main Results:

  • Athletes completed an average of 227.8 km, with running speed decreasing from 9.0 to 7.5 km/h.
  • Heart rate and lactate remained stable, but perceived exertion increased significantly.
  • Cognitive performance, specifically reaction time, significantly worsened post-event.
  • Physiological resilience varied, being lower in more proficient runners at the event's conclusion.

Conclusions:

  • Backyard ultrarunning negatively affects psychomotor speed.
  • Physiological resilience is performance-dependent in ultraendurance athletes.
  • Strategies to enhance physiological resilience and psychomotor speed may benefit ultraendurance performance.