Browsing by Author "Peterson, Matthew J"

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    Differences between completely physically inactive and low active older men and their response to an exercise intervention: the Veterans LIFE study.
    (Healthy aging research, 2015-01) Peterson, Matthew J; Pieper, Carl F; Sloane, Richard; Crowley, Gail M; Cowper, Patricia A; McConnell, Eleanor S; Bosworth, Hayden B; Ekelund, Carola C; Pearson, Megan P; Hall, Katherine S; Morey, Miriam C
    Physical activity interventions typically do not report behavioral changes in activity sub-groups. The aim of this study was to compare baseline differences and changes in physical activity between truly physically inactive men and low active men enrolled in a twelve-month, home-based physical activity intervention.Veterans with a mean age of 77.6 years were randomized to either a physical activity intervention or usual care. Measures included self-reported physical activity, physical function, and physical performance.At baseline, the physically inactive group reported more symptoms and poorer functioning than the low active group. At 12 months, physically inactive men randomized to the intervention group increased their physical activity to an average of 73.3 minutes per week. Physically inactive individuals randomized to the control group were eight times more likely to remain inactive compared to the low active group.Completely physically inactive older men can markedly increase physical activity levels with a long-term intervention. Without such intervention, the likelihood of this group remaining inactive is eightfold.
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    Economic Analysis of Primary Care-Based Physical Activity Counseling in Older Men: The VA-LIFE Trial.
    (Journal of the American Geriatrics Society, 2017-03) Cowper, Patricia A; Peterson, Matthew J; Pieper, Carl F; Sloane, Richard J; Hall, Katherine S; McConnell, Eleanor S; Bosworth, Hayden B; Ekelund, Carola C; Pearson, Megan P; Morey, Miriam C

    Objectives

    To perform an economic evaluation of a primary care-based physical activity counseling intervention that improved physical activity levels and rapid gait speed in older veterans.

    Design

    Secondary objective of randomized trial that assessed the effect of exercise counseling (relative to usual care) on physical performance, physical activity, function, disability, and medical resource use and cost.

    Setting

    Veterans Affairs Medical Center, Durham, North Carolina.

    Participants

    Male veterans aged ≥70 years (n = 398).

    Intervention

    An experienced health counselor provided baseline in-person exercise counseling, followed by telephone counseling at 2, 4, and 6 weeks, and monthly thereafter through one year. Each participant's primary care physician provided initial endorsement of the intervention, followed by monthly automated telephone messages tailored to the patient. Individualized progress reports were mailed quarterly.

    Measurements

    Intervention costs were assessed. Health care resource use and costs were estimated from enrollment through one year follow-up. The incremental cost of achieving clinically significant changes in major trial endpoints was calculated.

    Results

    The total direct cost of the intervention per participant was $459, 85% of which was counselor effort. With overhead, program cost totaled $696 per participant. Medical costs during follow-up reached $10,418 with the intervention, versus $12,052 with usual care (difference = -$1,634 (95% confidence interval = -$4,683 to $1,416; P = .29)). Expressed in terms of short-term clinical outcomes, the intervention cost $4,971 per additional patient reaching target exercise levels, or $4,640 per patient achieving a clinically significant change in rapid gait speed.

    Conclusion

    Improvements in physical activity and rapid gait speed in the physical activity counseling group were obtained at a cost that represents a small fraction of patients' annual health care costs.
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    Walking in old age and development of metabolic syndrome: the health, aging, and body composition study.
    (Metab Syndr Relat Disord, 2010-08) Peterson, Matthew J; Morey, Miriam C; Giuliani, Carol; Pieper, Carl F; Evenson, Kelly R; Mercer, Vicki; Visser, Marjolein; Brach, Jennifer S; Kritchevsky, Stephen B; Goodpaster, Bret H; Rubin, Susan; Satterfield, Suzanne; Simonsick, Eleanor M; Health ABC Study
    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.