The effects of exercise on cognitive function and brain plasticity - a feasibility trial

Area of Science:

• Neuroscience
• Exercise Physiology
• Genetics

Background:

• Exercise can enhance cognitive function through neuroplasticity.
• The brain-derived neurotrophic factor (BDNF) Val66Met gene polymorphism may influence these effects.
• Transcranial magnetic stimulation (TMS) offers a non-invasive method to study human brain plasticity.

Purpose of the Study:

• To determine if short-term exercise improves cognitive performance in sedentary adults.
• To investigate the relationship between exercise-induced cognitive changes, TMS-measured plasticity, and BDNF Met carrier status.

Main Methods:

• 14 sedentary adults underwent a 4-week aerobic exercise program (16 sessions).
• Cognitive performance was assessed using a neuropsychological test battery before and after exercise.
• Brain plasticity was measured using intermittent theta-burst TMS.

Main Results:

• The exercise intervention was feasible and well-tolerated.
• Trends suggested improved Stroop performance and reaction times in Val66Val individuals.
• Met carriers showed a trend towards reduced TMS-induced plasticity.

Conclusions:

• Acute exercise interventions are feasible in sedentary adults for assessing cognitive and neurobiological effects.
• TMS can evaluate exercise's impact on brain plasticity and cognition.
• BDNF polymorphism may modulate exercise-related neuroplasticity.