Suppose a new study suggests that regular exercise can improve cognitive function and reduce the risk of developing Alzheimer's disease. The study followed a group of participants aged 65 and older who engaged in physical activity for at least 30 minutes a day, five days a week. The results showed a significant improvement in memory and attention span among the active participants compared to the sedentary group.
Can we infer that "Exercise has no impact on cognitive function"? Yes, no, or maybe?