Determinants of Exercise Level in the Sedentary versus Underactive Older Adult: Implications for Physical Activity Program Development

in Journal of Aging and Physical Activity
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This investigation identified demographic and health-related characteristics of 1,877 sedentary, underactive, and regularly active individuals aged 50 to 65 randomly sampled from a northern California city. Physiological and psychosocial information was available in greater detail for a subsample (n = 327) of sedentary and underactive persons who were subsequently enrolled in a randomized, controlled, clinical trial (SSHIP). Results suggested that unmarried men, women reporting poor health, and smokers were most likely to be completely sedentary. Sedentary and underactive individuals responded differently to two recruitment strategies designed to attract participants into SSHIP. In addition, the initially sedentary participants had significantly lower adherence rates across the 1-year exercise trial compared to the initially underactive regardless of either the format or intensity of the program. These data underscore the utility of differentiating between levels of less-than-optimal physical activity in formulating campaigns promoting physical activity as well as designing exercise interventions.

The authors are with the Stanford Center for Research in Disease Prevention. Address correspondence to Abby C. King, Stanford Center for Research in Disease Prevention, Stanford University School of Medicine, 730 Welch Road, Suite B, Palo Alto, CA 94304-1583.

Journal of Aging and Physical Activity
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