Effects of a 12-Week Periodized Resistance Training Program on Resting Brain Activity and Cerebrovascular Function: A...

Area of Science:

• Neuroscience
• Gerontology
• Exercise Physiology

Background:

• Cognitive aging is a growing concern, with resistance training showing promise for cognitive enhancement.
• The specific brain mechanisms underlying resistance training's cognitive benefits remain largely undetermined.
• Understanding these mechanisms is crucial for developing effective interventions for healthy cognitive aging.

Purpose of the Study:

• To investigate the effects of a 12-week resistance training program on resting brain activity and cerebrovascular function in healthy older adults.
• To identify changes in brain activity and cerebral blood flow associated with resistance training.
• To explore resistance training's potential to mitigate age-related neurodegenerative markers.

Main Methods:

• A 12-week resistance training intervention was conducted in 20 healthy older adults.
• Multimodal 3T magnetic resonance imaging was used to assess brain activity and cerebrovascular function at baseline, pre-intervention, and post-intervention.
• Fluid cognition was assessed, and region of interest analyses were performed for specific brain regions and white matter lesion volume.

Main Results:

• Significant improvements in fluid cognition (d=1.27) were observed post-intervention.
• Decreased resting brain activity was noted in the cerebellum and temporal/parietal regions.
• Improved cerebral blood flow was estimated in the hippocampus (d=0.40) and posterior cingulate (d=0.61), counteracting age-related declines.
• Resistance training showed a small countermeasure effect on white matter lesion volume (rank-biserial=-0.22).

Conclusions:

• Resistance training enhances fluid cognition and alters resting brain activity patterns in older adults.
• The intervention appears to improve cerebrovascular function in key brain regions associated with cognitive health.
• These findings support resistance training as a potential strategy to attenuate neurodegenerative processes and promote healthy cognitive aging.