Researchers report that a structured 12-week exercise program was associated with increased levels of a protein tied to brain function in adults with low activity levels.
By yourNEWS Media Newsroom
A recent study examining the effects of physical activity on brain chemistry found that a structured cycling routine was associated with increased levels of brain-derived neurotrophic factor, or BDNF, in a small group of overweight adults. The findings were published in the journal Brain Research and focused on how consistent exercise may influence biological processes connected to cognitive function.
The research, led by Flaminia Ronca, included 23 participants with an average age of 35, all of whom reported limited exercise prior to the trial. Participants were divided into two groups, with one completing a 12-week cycling program and the other maintaining their usual activity levels.
Those assigned to the exercise group participated in four cycling sessions each week, with workouts lasting between 30 and 45 minutes. The program began with lower-intensity sessions during the first six weeks before progressing to a mix of higher-intensity, moderate, and lighter workouts in the second half. Researchers tracked exertion based on participant feedback and monitored physiological responses throughout the study.
Blood analysis conducted after exercise sessions showed what researchers described as a “significant surge” in BDNF levels among participants who completed the cycling program. In contrast, individuals in the control group did not show measurable changes in the protein.
BDNF plays a role in neuron growth, communication, and survival, and has been linked in prior studies to cognitive processes involving memory and learning. Researchers cited earlier findings suggesting that increased BDNF production may be associated with improved brain function and structural changes in areas such as the hippocampus.
Brain imaging conducted during the study indicated reduced activity in the prefrontal cortex of participants in the exercise group while performing attention and inhibition tasks. Ronca said the findings could suggest more efficient neural functioning, stating that “lower activity in the prefrontal cortex might potentially suggest more efficient functioning in those participants who produced more BDNF.”
The study did not identify measurable improvements in memory over the 12-week period. Researchers noted that the duration of the trial may not have been sufficient to detect such changes.
Physical outcomes were also recorded. Participants in the cycling group experienced a reduction in body fat percentage, declining from 23.4% to 22.4%, along with improvements in cardiorespiratory fitness as measured by VO2 max. By comparison, the control group saw no change in body fat percentage and a decline in fitness levels.
Researchers emphasized that the study’s small sample size limits the ability to draw definitive conclusions about cause and effect. They stated that larger studies would be necessary to confirm whether exercise directly drives increases in BDNF and related cognitive benefits.
The findings contribute to ongoing research exploring how lifestyle factors may influence brain health. Previous studies have examined links between physical activity and reduced risk of cognitive decline, with exercise thought to support brain function through increased blood flow, improved oxygen delivery, and reduced inflammation.
While the results remain preliminary, the study suggests that moderate, consistent physical activity may influence biological markers associated with brain health, warranting further investigation into its potential long-term effects.
Source: Natural News
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