Walking in old age and development of metabolic syndrome: the health, aging, and body composition study.
Date
2010-08
Journal Title
Journal ISSN
Volume Title
Repository Usage Stats
views
downloads
Citation Stats
Abstract
BACKGROUND: The specific health benefits of meeting physical activity guidelines are unclear in older adults. We examined the association between meeting, not meeting, or change in status of meeting physical activity guidelines through walking and the 5-year incidence of metabolic syndrome in older adults. METHODS: A total of 1,863 Health, Aging, and Body Composition (Health ABC) Study participants aged 70-79 were followed for 5 years (1997-1998 to 2002-2003). Four walking groups were created based on self-report during years 1 and 6: Sustained low (Year 1, <150 min/week, and year 6, <150 min/week), decreased (year 1, >150 min/week, and year 6, <150 min/week), increased (year 1, <150 min/week, and year 6, >150 min/week), and sustained high (year 1, >150 min/week, and year 6, >150 min/week). Based on the Adult Treatment Panel III (ATP III) panel guidelines, the metabolic syndrome criterion was having three of five factors: Large waist circumference, elevated blood pressure, triglycerides, blood glucose, and low high-density lipoprotein (HDL) levels. RESULTS: Compared to the sustained low group, the sustained high group had a 39% reduction in odds of incident metabolic syndrome [adjusted odds ratio (OR) = 0.61; 95% confidence interval (CI), 0.40-0.93], and a significantly lower likelihood of developing the number of metabolic syndrome risk factors that the sustained low group developed over 5 years (beta = -0.16, P = 0.04). CONCLUSIONS: Meeting or exceeding the physical activity guidelines via walking significantly reduced the odds of incident metabolic syndrome and onset of new metabolic syndrome components in older adults. This protective association was found only in individuals who sustained high levels of walking for physical activity.
Type
Department
Description
Provenance
Citation
Permalink
Published Version (Please cite this version)
Publication Info
Peterson, Matthew J, Miriam C Morey, Carol Giuliani, Carl F Pieper, Kelly R Evenson, Vicki Mercer, Marjolein Visser, Jennifer S Brach, et al. (2010). Walking in old age and development of metabolic syndrome: the health, aging, and body composition study. Metab Syndr Relat Disord, 8(4). pp. 317–322. 10.1089/met.2009.0090 Retrieved from https://hdl.handle.net/10161/3323.
This is constructed from limited available data and may be imprecise. To cite this article, please review & use the official citation provided by the journal.
Collections
Scholars@Duke
Matthew John Peterson
Dr. Peterson's broad research interests are in aging and functional decline. He has been an investigator on VA, NIH, and foundation funded clinical trials and clinical demonstration projects that examined the effect of physical activity on the mobility and function in older adults from both institutionalized and community dwelling populations. Currently Dr. Peterson is a tenured Associate Professor in the University of North Carolina Wilmington School of Nursing, where he teaches epidemiology, statistics, and advanced scientific writing. He also provides statistical support for UNCW nursing faculty on multiple federal and foundation funded projects.
Miriam C. Morey
The general focus of Dr. Morey's work is exercise and aging. All of her research examines how physical activity, exercise training, or physical fitness influence the physical functioning and/or pyschosocial quality of life of older adults. She directs a supervised hospital-based program for older adults, which is used to examine longitudinally the effects of exercise training on the musculoskeletal, articular, and cardiorespiratory systems. Furthermore, she has a number of studies that examine how system-wide impairments serve as preclinical indicators of disability and overall decline in the quality of life of older adults. Ongoing studies examine the role of exercise training in attenuation or reversal of functional decline and examination of the effectivenes of different methods of physical activity counseling for home-based exercise.
Dr. Morey's research evolves directly from three sources: (1) primary analyses of clinical trials regarding the impact of exercise on a specific outcome, (2) longitudinal analyses of participants in ongoing clinical exercise programs, and (3) secondary analyses of clinical trials which involve exercise or physical activity.
Although physical activity and exercise are the interventions of interest in all of these studies, the outcomes of interest vary considerably. Within the broad domain of aging, Dr. Morey has examined the impact of exercise on physical performance, well-being, sleep quality, disability, and functional limitations. More recently, Dr. Morey has several studies focusing on the effect of tailored telephone physical activity counseling to improve function in elders. Specific studies are targeted to newly diagnosed cancer survivors, long-term cancer survivors, and frail elders in geriatric and primary care settings.
Dr. Morey's expertise is in the area of exercise physiology and aging. She has specific knowledge in age-related changes in cardiorespiratory functioning, the effects of habitual exercise (longitudinal) on performance, and exercise programming for older adults.
Key Words: Exercise, maximal oxygen uptake, cardiorespiratory fitness, aging, disability,
functional limitations, longitudinal
Carl F. Pieper
Analytic Interests.
1) Issues in the Design of Medical Experiments: I explore the use of reliability/generalizability models in experimental design. In addition to incorporation of reliability, I study powering longitudinal trials with multiple outcomes and substantial missing data using Mixed models.
2) Issues in the Analysis of Repeated Measures Designs & Longitudinal Data: Use of Hierarchical Linear Models (HLM) or Mixed Models in modeling trajectories of multiple variables over time (e.g., physical and cognitive functioning and Blood Pressure). My current work involves methodologies in simultaneous estimation of trajectories for multiple variables within and between domains, modeling co-occuring change.
Areas of Substantive interest: (1) Experimental design and analysis in gerontology and geriatrics, and psychiatry,
(2) Multivariate repeated measures designs,
Unless otherwise indicated, scholarly articles published by Duke faculty members are made available here with a CC-BY-NC (Creative Commons Attribution Non-Commercial) license, as enabled by the Duke Open Access Policy. If you wish to use the materials in ways not already permitted under CC-BY-NC, please consult the copyright owner. Other materials are made available here through the author’s grant of a non-exclusive license to make their work openly accessible.