Cardiorespiratory fitness, blood pressure, and cerebral oxygenation during a dual-task in healthy young males
Authors: Anaick Perrochon
Sarah Fraser
Laurent Bosquet
Roman Goenarjo
Olivier Dupuy
Nicolas Berryman
Journal: Behavioural Brain Research (2020)
Discipline: NEUROSCIENCE & BEHAVIOR
Keywords: Arterial pressure; Cardiorespiratory fitness; Cortical oxygenation; Dual-task; Working memory
Affiliations: Laboratory MOVE, University of Poitiers, Poitiers, France; Department of Medical Physiology, University of Indonesia, Depok, Indonesia., Laboratory MOVE, University of Poitiers, Poitiers, France., Interdisciplinary School of Health Sciences, University of Ottawa, Canada., Laboratory HAVAE, University of Limoges, Limoges, France., Department of Sports Studies, Bishop's University, Sherbrooke, Canada; Centre de Recherche de l'Institut Universitaire de Gériatrie de Montréal, Montréal, QC, Canada., Laboratory MOVE, University of Poitiers, Poitiers, France. Electronic address: .

Abstract:  This study aimed to evaluate the effects of cardiorespiratory fitness (CRF) and mean arterial pressure (MAP) on the prefrontal cortex (PFC) oxygenation and dual-task performance in healthy young males. Changes in the concentration of oxygenated (ΔHbO2) and deoxygenated hemoglobin (ΔHHb) in the right and left PFC were examined during a cognitive auditory 2-back task. Cognitive performance (2-back task's accuracy) and walking motor performances were measured in single-tasks (single motor and single cognitive) and dual-task (2-back task + walking). Thirty-six young males were ranked according to their V˙O2peak. The second tertile was excluded to generate two groups of different CRF (high fit group: n = 12 and V˙O2peak = 56.0 ± 6.7 ml kg-1 min-1; low-fit group: n = 12 and V˙O2peak = 36.7 ± 4.1 ml kg-1 min-1). The CRF groups were further split into two subgroups according to 24-h MAP (higher-MAP, lower-MAP). Two-way ANOVA (CRF x n-back conditions) revealed a significant interaction between the CRF and cognitive task condition on 2-back accuracy (p = .007) and a main effect of CRF on ⊗HHb in the right and left PFC (p &lt; .05). These results suggest that in healthy young males: 1) for CRF, only low-fit individuals demonstrate dual-task costs in accuracy (Dual &lt; Single), and 2) that in comparison to the low-fit group, the high fit-group demonstrated greater changes in PFC oxygenation in ΔHHb, but not ΔHbO2. 

Retracted: No

PubPeer comments:
 Identical XRD patterns with peaks added by hand. ![file] , 
 Hopefully very one will be safe and sound in this pandemic situation. I have readymade sample of the catalyst (with hard copy of diffraction patterns) being used in the study, as students resume laboratory (as University remained close due to COVID-19 pandemic), I will be in the position to provide for research purpose only base on shipment cost. Normally for comparative study we use the same base line with depression of all peaks expect the identical ones which are multiplied by some factor for clarity. Regards Sadiq , 
 Hopefully very one will be safe and sound in this pandemic situation. I have readymade sample of the catalyst (with hard copy of diffraction patterns) being used in the study, as students resume laboratory (as University remained close due to COVID-19 pandemic), I will be in the position to provide for research purpose only base on shipment cost. Normally for comparative study we use the same base line with depression of all peaks expect the identical ones which are multiplied by some factor for clarity. Regards Sadiq ,