Background/objective: (1) Examine the role of exercise intensity on mental health symptoms in a community-based sample of older adults. (2) Explore the moderating role of genetic variation in brain-derived neurotrophic factor () and apolipoprotein E () on the effects of exercise on mental health symptoms.
Method: This study is a secondary analysis of a three-arm randomized controlled trial, comparing the effects of 6 months of high-intensity aerobic training vs. moderate-intensity aerobic training vs. a no-contact control group on mental health symptoms assessed using the Depression, Anxiety, and Stress Scale (DASS). The Val66Met polymorphism and ε4 carrier status were explored as genetic moderators of exercise effects on mental health symptoms.
Results: The exercise intervention did not influence mental health symptoms. The Val66Met polymorphism did not moderate intervention effects on mental health symptoms. ε4 carrier status moderated the effect of intervention group on perceived stress over 6 months, such that ε4 carriers, but not non-carriers, in the high-intensity aerobic training group showed a decline in perceived stress over 6 months.
Conclusions: ε4 carrier status may modify the benefits of high-intensity exercise on perceived stress such that ε4 carriers show a greater decline in stress as a result of exercise relative to non- ε4 carriers.
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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10831729 | PMC |
http://dx.doi.org/10.1016/j.ijchp.2024.100443 | DOI Listing |
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