Key result
Young adults with higher cardiorespiratory fitness (amateur runners) exhibited faster reaction times and significantly higher left dorsolateral prefrontal cortex oxygenation during an exercise-executive function dual task compared to sedentary individuals.
Why the study?
The study investigated the relationship between executive function and prefrontal cortex oxygenation during exercise in young adults with different cardiorespiratory fitness levels.
Does higher cardiorespiratory fitness improve executive function and prefrontal cortex oxygenation during moderate-intensity exercise in young adults?
Cross-Sectional (n=28)
No
Does higher cardiorespiratory fitness improve executive function and prefrontal cortex oxygenation during moderate-intensity exercise in young adults?
Mean Difference: -0.05
p-value: p=0.018
Higher cardiorespiratory fitness is associated with better executive function reaction times and increased prefrontal cortex oxygenation during moderate-intensity exercise.
Supports further investigation of CRF effects on executive function during exercise; leaves open clinical relevance and causality.
Objective: This study investigated the relationship between executive function and prefrontal cortex oxygenation during exercise in young adults with different Cardiorespiratory fitness (CRF) levels. Methods: A total of 28 amateur runners ( n = 14) and sedentary college students ( n = 14) were recruited. The maximum oxygen uptake estimated for the sub-maximal intensity run (4.97 miles/h) was used to indicate the different CRF levels. After 1 week, participants must complete the Stroop and 2-Back tasks in silence while performing moderate-intensity exercise. Using 19-channel functional near-infrared spectroscopic (fNIRS) to examine changes in prefrontal cortex oxyhemoglobin. Results: There was no significant difference in the correctness of the Stroop and 2-Back tasks between the two groups during exercise, but the amateur runner group showed an acceleration in reaction time. fNIRS results showed that during the exercise 2-Back task, the left dorsolateral prefrontal cortex oxyhemoglobin was higher in the amateur runner group than in the sedentary group. Conclusion: Executive function during exercise was similarly improved in participants with better fitness, suggesting that CRF provides an excellent metabolic reserve and directed allocation for cognitive tasks during exercise.
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Liu et al. (2023) conducted a cross-sectional in Healthy young adults (n=28). High cardiorespiratory fitness vs. Sedentary lifestyle (low cardiorespiratory fitness) was evaluated on Prefrontal cortex oxygenation (oxy-Hb) in the left dorsolateral prefrontal cortex (CH18) during an exercise 2-Back task (MD -0.05, p=0.018). Young adults with higher cardiorespiratory fitness (amateur runners) exhibited faster reaction times and significantly higher left dorsolateral prefrontal cortex oxygenation during an exercise-executive function dual task compared to sedentary individuals.
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