Key result
Six weeks of exercise-based cardiac rehabilitation significantly improved cardiorespiratory capacity (from 5.5 to 6.9 METs) and decreased prefrontal cortex oxygenation during submaximal exercise.
Why the study?
To investigate whether prefrontal cortex oxygenation during incremental exercise is altered in cardiovascular disease patients completing 6 weeks of exercise-based cardiac rehabilitation.
Does 6 weeks of exercise-based cardiac rehabilitation alter prefrontal cortex oxygenation during submaximal exercise in cardiovascular disease patients?
Observational (n=19)
Does 6 weeks of exercise-based cardiac rehabilitation alter prefrontal cortex oxygenation during submaximal exercise in cardiovascular disease patients?
Six weeks of exercise-based cardiac rehabilitation improves functional capacity and decreases prefrontal cortex oxygenation during submaximal exercise, suggesting a redistribution of cortical resources to motor regions.
The purpose of this study was to investigate if prefrontal cortex (PFC) oxygenation during incremental exercise is altered among cardiovascular disease (CVD) patients who completed 6 weeks of exercise-based cardiac rehabilitation (CR). Nineteen (male = 14, female = 5; 65.5 ± 11.5 years) participants from an outpatient CR program were enrolled in the study. Each participant completed a submaximal graded treadmill evaluation at intake and again upon completion of 18 individualized CR sessions. Functional near-infrared spectroscopy (fNIRS) imaging was used to measure left- and right- PFC (LPFC and RPFC) oxygenation parameters during the submaximal exercise evaluations. Patients showed improvements in cardiorespiratory capacity (pre 5.5 ± 2.5 vs. post 6.9 ± 2.8 metabolic equivalents (METs)). A significant decrease in LPFC and RPFC oxygenation was observed during the post-CR exercise test compared to pre-CR. CVD patients enrolled in 6 weeks of CR showed significant improvements in functional capacity along with decreased cortical oxygenation during submaximal exercise. Exercise training may cause distribution of cortical resources to motor regions that support sustained exercise.
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Moriarty et al. (2020) conducted an observational in Cardiovascular disease (n=19). Exercise-based cardiac rehabilitation vs. Pre-rehabilitation baseline was evaluated on Cardiorespiratory capacity (METs). Six weeks of exercise-based cardiac rehabilitation significantly improved cardiorespiratory capacity (from 5.5 to 6.9 METs) and decreased prefrontal cortex oxygenation during submaximal exercise.
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