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The effect of ergometer cycling and visual foraging on brain function: A pilot study.

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Dual-task training combining cycling and visual foraging impacts executive function (EF). Ergometer cycling alone showed greater improvements for those with lower baseline scores, with higher prefrontal cortex activation observed.

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Area of Science:

  • Cognitive Neuroscience
  • Sports Science
  • Human Factors

Background:

  • Dual-task training, combining cognitive and physical activities, shows potential for enhancing cognitive function.
  • Increased prefrontal cortex (PFC) activation is hypothesized to underlie cognitive improvements from such training.

Purpose of the Study:

  • To investigate the effects of ergometer cycling (EC), visual foraging (VF), and combined EC+VF on executive function (EF).
  • To explore the relationship between PFC activation, arousal, and EF performance during these interventions.

Main Methods:

  • A pilot study involving 27 participants who completed four sessions: baseline assessment and three randomized conditions (EC, VF, EC+VF).
  • EF was assessed using the 2-Back, Flanker, and Wisconsin Card Sorting Tasks (WCST).
  • Functional near-infrared spectroscopy (fNIRS), eye-tracking, and the Affect Grid were used to measure physiological and subjective responses.

Main Results:

  • Significant improvements in the Flanker task were observed for participants with poorer baseline scores in the EC condition.
  • Both EC and EC+VF conditions showed higher subjective arousal and PFC activation compared to VF.
  • No direct association was found between elevated PFC activation and EF enhancements, possibly due to near-ceiling effects in task performance.

Conclusions:

  • Ergometer cycling may be a more potent intervention for arousal and PFC activation than visual foraging.
  • The secondary visual foraging task in the combined condition might have reduced energetic investment in cycling.
  • PFC activation correlated with gaze fixations in the combined condition, suggesting complex interplay between oxygen supply and demand.