Journal
CONTEMPORARY CLINICAL TRIALS
Volume 34, Issue 1, Pages 21-34Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.cct.2012.09.006
Keywords
Cardiovascular health; Postural control; Gait; Mind-body exercise; Senescence; Prevention
Funding
- National Center for Complementary and Alternative Medicine (NCCAM) at the National Institutes of Health (NIH) [R21 AT005501-01A1]
- National Center for Research Resources (NCRR) [UL1 RR025758]
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Introduction: Aging is typically associated with progressive multi-system impairment that leads to decreased physical and cognitive function and reduced adaptability to stress. Due to its capacity to characterize complex dynamics within and between physiological systems, the emerging field of complex systems biology and its array of quantitative tools show great promise for improving our understanding of aging, monitoring senescence, and providing biomarkers for evaluating novel interventions, including promising mind-body exercises, that treat age-related disease and promote healthy aging. Material and methods: An ongoing, two-arm randomized clinical trial is evaluating the potential of Tai Chi mind-body exercise to attenuate age-related loss of complexity. A total of 60 Tai Chi-naive healthy older adults (aged 50-79) are being randomized to either six months of Tai Chi training (n = 30), or to a waitlist control receiving unaltered usual medical care (n = 30). Our primary outcomes are complexity-based measures of heart rate, standing postural sway and gait stride interval dynamics assessed at 3 and 6 months. Multiscale entropy and detrended fluctuation analysis are used as entropy- and fractal-based measures of complexity, respectively. Secondary outcomes include measures of physical and psychological function and tests of physiological adaptability also assessed at 3 and 6 months. Discussion: Results of this study may lead to novel biomarkers that help us monitor and understand the physiological processes of aging and explore the potential benefits of Tai Chi and related mind-body exercises for healthy aging. (c) 2012 Elsevier Inc. All rights reserved.
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