[A functional magnetic resonance imaging study of exercise addiction]

Area of Science:

• Neuroscience
• Psychiatry
• Sports Medicine

Background:

• Exercise addiction (EA) is a growing concern, characterized by compulsive engagement in physical activity.
• Understanding the neural underpinnings of EA is crucial for developing effective interventions.
• Task-based functional magnetic resonance imaging (fMRI) offers a window into brain activity during specific cognitive or emotional tasks.

Purpose of the Study:

• To investigate differences in brain activity between individuals with exercise addiction and healthy controls using task-fMRI.
• To examine neural responses to visual stimuli (sports and non-sports pictures) in individuals with EA.

Main Methods:

• A cohort of 29 individuals diagnosed with exercise addiction (EA group) and 26 healthy controls were recruited.
• Participants underwent fMRI scanning while viewing images of sports and non-sports-related content.
• Brain responses were analyzed and compared between the EA group and the control group.

Main Results:

• The EA group exhibited significantly inhibited brain activity in regions including the right fusiform gyrus and left posterior central gyrus when viewing sports pictures compared to controls.
• When viewing non-sports pictures, the EA group showed more pronounced inhibition in areas such as the left superior frontal gyrus and right inferior frontal gyrus.
• These findings indicate distinct patterns of neural inhibition in response to visual stimuli in individuals with exercise addiction.

Conclusions:

• Individuals with exercise addiction demonstrate significant neural inhibition in response to visual stimulation.
• This brain inhibition is particularly evident when viewing non-sports-related images, suggesting a potential disruption in visual processing pathways.
• The study highlights the utility of fMRI in identifying neurobiological correlates of exercise addiction.