August 9, 2022Frontiers in PhysiologyOpen Access

Temporal changes in cortical oxygenation in the motor-related areas and bilateral prefrontal cortex based on exercise intensity and respiratory metabolism during incremental exercise in male subjects: A near-Infrared spectroscopy study

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Why the study?

Prefrontal cortex activity during incremental exercise may relate to exhaustion-induced termination, but few studies have focused on motor-related areas during incremental exercise.

Does incremental exercise cause different temporal changes in cortical oxygenation in the prefrontal cortex compared to motor-related areas in healthy young males?

Comparison

Oxygenation changes across cortical areas during incremental exercise

Design

Near-infrared spectroscopy study

Authors

SKSho KojimaNiigata University of Health and Welfare SMShinichiro MorishitaFukushima Medical University KHKazuki HottaKitasato University

Discussion

Member takes

Implication

Differential PFC oxygenation rates during exercise may inform fatigue monitoring; leaves open whether area-specific patterns predict termination in patients.

Structured PICO

Does incremental exercise cause different temporal changes in cortical oxygenation in the prefrontal cortex compared to motor-related areas in healthy young males?

Population

16 healthy young male subjects with no fitness habits or history of neurological or orthopedic disorders, unmedicated within the last 3 months.

Intervention

Incremental exercise using the ramp load method on a cycle ergometer starting at 20 W/min until exhaustion, following a 4-min rest and 4-min warm-up at 20 W.

Outcome

Changes in oxyhemoglobin (O2Hb), deoxyhemoglobin (HHb), and total hemoglobin (THb) in the bilateral prefrontal cortex, supplementary motor area, and primary motor cortex before and after the anaerobic threshold and respiratory compensation point.surrogate

Cortical oxygenation increases faster in the prefrontal cortex than in motor-related areas during incremental exercise, suggesting regional differences in neural activity related to exercise continuation and termination.

Limitations

Cortical activity, affective response, CMRO2, and CBF were not measured.
Amygdala and insular cortex related to affect are located deep in the brain and could not be measured.
Skin blood flow was measured on the forehead, which is distant from the primary motor cortex.
Systemic physiological factors such as cardiac output, mean arterial pressure, and peripheral vascular resistance were not measured.

Cite This Study

Kojima et al. (2022) studied this question.

synapsesocial.com/papers/6a709d5a31a3df824328de77 https://doi.org/10.3389/fphys.2022.794473

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Implication

Differential PFC oxygenation rates during exercise may inform fatigue monitoring; leaves open whether area-specific patterns predict termination in patients.

Temporal changes in cortical oxygenation in the motor-related areas and bilateral prefrontal cortex based on exercise intensity and respiratory metabolism during incremental exercise in male subjects: A near-Infrared spectroscopy study

Discussion

Member takes

Implication

Structured PICO

Limitations

Cite This Study

Temporal changes in cortical oxygenation in the motor-related areas and bilateral prefrontal cortex based on exercise intensity and respiratory metabolism during incremental exercise in male subjects: A near-Infrared spectroscopy study

Discussion

Member takes

Implication

Structured PICO

Limitations

Cite This Study

Also Consider

Also Consider