Montreal Study Finds Subtle Long-Term Cognitive Effects of a Single Mild Traumatic Brain Injury

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Adding to a growing volume of literature on this topic, Montreal researchers published a study in January, 2021 demonstrating that a single mild traumatic brain injury involving late adulthood patients (ages 50-70) leads to subtle, long-term cognitive consequences.

The article, authored by Camille Larson-Dupuis et. al., entitled Subtle long-term cognitive effects of a single mild traumatic brain injury and the impact of a three-month aerobic exercise intervention, was published in The Journal of Sports Medicine and Physical Fitness (2021 January: 61(1): 87-95).  What makes these findings particularly significant is that all participants in the study were exempt from confounding factors sometimes associated with long-term consequences. All participants:

  • had negative scans
  • were symptom-free within three months of their accident (including depression and anxiety)
  • did not present with chronic conditions known as risk factors for cognitive decline (uncontrolled diabetes, uncontrolled high blood pressure or cardiovascular disease)
  • were all well-educated

Cognitive declines, compared to a control group, were noted two to seven years post-accident in attention, processing speed, executive functioning and memory.

The study also tested the hypothesis that a 12-week aerobic exercise program would lead to cognitive improvements in the TBI group. The data did not support this hypothesis.

DISCLAIMER: Because of the generality of this update, the information provided herein may not be applicable in all situations and should not be acted upon without specific legal advice based on particular situations.

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