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Working Memory Training for Older Participants: A Control Group Training Regimen and Initial Intellectual Functioning Assessment

Working Memory Training for Older Participants: A Control Group Training Regimen and Initial Intellectual Functioning Assessment

Published on: September 20, 2020

Semantic memory functional MRI and cognitive function after exercise intervention in mild cognitive impairment.

J Carson Smith¹, Kristy A Nielson, Piero Antuono

¹Department of Kinesiology, University of Maryland, College Park, MD 20742, USA. carson@umd.edu

Journal of Alzheimer'S Disease : JAD

|June 28, 2013

Summary

Physical exercise may enhance neural efficiency for memory retrieval in individuals with mild cognitive impairment (MCI) and healthy older adults. This intervention improved cardiorespiratory fitness and cognitive function, suggesting potential benefits for brain health.

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Area of Science:

Neuroscience
Gerontology
Exercise Physiology

Background:

Mild cognitive impairment (MCI) is linked to memory loss and increased Alzheimer's disease (AD) risk.
Current treatments for MCI offer limited clinical benefits.
Physical exercise is recommended for cognitive health, but its effects on MCI memory retrieval are unclear.

Purpose of the Study:

To investigate the impact of a 12-week exercise intervention on semantic memory activation in individuals with MCI.
To compare the effects of exercise on neural processing and cognitive function between MCI patients and cognitively intact controls.

Main Methods:

Seventeen MCI participants and 18 controls underwent 12 weeks of moderate-intensity treadmill exercise.
Cardiorespiratory fitness was assessed pre- and post-intervention.
Functional magnetic resonance imaging (fMRI) and neuropsychological tests measured brain activity and cognitive performance.

Main Results:

Both groups improved cardiorespiratory fitness by approximately 10%.
MCI participants showed significant improvement in list-learning task performance.
Eleven brain regions involved in semantic memory retrieval exhibited reduced activation intensity post-intervention, similar in both groups.

Conclusions:

Exercise training may enhance neural efficiency during semantic memory retrieval in both MCI and cognitively intact older adults.
The findings suggest exercise could lead to cognitive improvements in individuals with MCI.
Further clinical trials are necessary to confirm exercise's efficacy in delaying AD progression.