Journal
FRONTIERS IN HUMAN NEUROSCIENCE
Volume 11, Issue -, Pages -Publisher
FRONTIERS MEDIA SA
DOI: 10.3389/fnhum.2017.00514
Keywords
mind-body exercise; memory; aging; fractional amplitude of low-frequency fluctuations (fALFF); resting-state functional magnetic resonance imaging (fMRI); frequency bands
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Funding
- Special Scientific Research Fund of Public Welfare Profession of China [201307004]
- Ministry of Science and Technology and Ministry of Finance of the People's Republic of China
- National Rehabilitation Research Center of Traditional Chinese Medicine
- Fujian rehabilitation industrial institution
- Fujian Rehabilitation Tech Co-innovation Center [X2012007-Collaboration]
- NIH/NCCIH [R01AT006364, R01AT008563, R61AT009310, R21AT008707, P01 AT006663]
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Age-related cognitive decline is a significant public health concern. Recently, non-pharmacological methods, such as physical activity and mental training practices, have emerged as promising low-cost methods to slow the progression of age-related memory decline. In this study, we investigated if Tai Chi Chuan (TCC) and Baduanjin modulated the fractional amplitude of low-frequency fluctuations (fALFF) in different frequency bands (low-frequency: 0.01-0.08 Hz; slow-5: 0.01-0.027 Hz; slow-4: 0.027-0.073 Hz) and improved memory function. Older adults were recruited for the randomized study. Participants in the TCC and Baduanjin groups received 12 weeks of training (1 h/day for 5 days/week). Participants in the control group received basic health education. Each subject participated in memory tests and fMRI scans at the beginning and end of the experiment. We found that compared to the control group: (1) TCC and Baduanjin groups demonstrated significant improvements in memory function; (2) TCC increased fALFF in the dorsolateral prefrontal cortex (DLPFC) in the slow-5 and low-frequency bands; and (3) Baduanjin increased fALFF in the medial PFC in the slow-5 and low-frequency bands. This increase was positively associated with memory function improvement in the slow-5 and low-frequency bands across the TCC and Baduanjin groups. Our results suggest that TCC and Baduanjin may work through different brain mechanisms to prevent memory decline due to aging.
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