The effects of aerobic exercise intensity on memory in older adults.
Journal: 2019/October - Applied physiology, nutrition, and metabolism = Physiologie appliquee, nutrition et metabolisme
ISSN: 1715-5320
Abstract:
Aerobic exercise may enhance memory in older adults. However, the optimal intensity and underlying mechanism are unclear. This community-based study examined the effect of aerobic exercise intensity on memory and general cognitive abilities. Brain-derived neurotrophic factor (BDNF) was examined as a potential mechanism. Sixty-four sedentary older adults participated in one of three groups: 1) high-intensity interval training (HIIT); 2) moderate continuous training (MCT); or 3) stretching control (CON). Prior to and following the intervention, high-interference memory was assessed using a Mnemonic Similarity task and executive functions were assessed using Go Nogo and Flanker tasks. HIIT led to the greatest memory performance compared to MCT and CON [F(2, 55) = 6.04, p = .004] and greater improvements in memory correlated with greater increases in fitness [rs(46) = .27, p = .03]. Exercise intensity seemed to matter less for executive functioning, as positive trends were observed for both HIIT and MCT. No significant differences in BDNF were found between groups. Overall, these results suggest that aerobic exercise may enhance memory in older adults, with the potential for higher intensity exercise to yield the greatest benefit. While our findings suggest that BDNF does not regulate these adaptations, the mechanisms remain to be determined. Novelty bullets: • High-intensity interval training results in the greatest memory performance in inactive older adults compared to moderate continuous training or stretching • Improvement in fitness correlates with improvement in memory performance.
Relations:
Citations
(8)
Genes
(1)
Processes
(1)
Anatomy
(1)
Similar articles
Articles by the same authors
Discussion board
Collaboration tool especially designed for Life Science professionals.Drag-and-drop any entity to your messages.