Journal
MEDICINE AND SCIENCE IN SPORTS AND EXERCISE
Volume 39, Issue 11, Pages 1997-2004Publisher
LIPPINCOTT WILLIAMS & WILKINS
DOI: 10.1249/mss.0b013e318145348d
Keywords
exercise; aging; randomized trial; compliance; retention
Categories
Funding
- Intramural NIH HHS Funding Source: Medline
- NIA NIH HHS [U01 AG22376, U01 AG022376, P30 AG028740, P30 AG021332, P30 AG031679] Funding Source: Medline
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Purpose: Lifestyle Interventions and Independence for Elders Pilot (LIFE-P) was a trial to examine the effects of a physical activity intervention (PA) compared with a health education control (SA) on measures of disability risk in sedentary older adults (N = 424). We examined adherence to the LIFE-P PA intervention for the first 12 months of the trial. Methods: The PA intervention consisted of walking, strength, flexibility, and balance training supplemented with behavioral skills training modules, and it used a phased, center-based schedule of adoption (3x wk(-1), weeks 1-8), transition (2x wk(-1), weeks 9-24), and maintenance (1x wk(-1), weeks 25 to end of trial) while transitioning to primarily home-based physical activity. SA consisted of weekly (weeks 1-26) transitioning to monthly health education workshops. Results: Participation in moderate-intensity physical activity increased from baseline to months 6 and 12 in PA compared with SA (P < 0.001). At 12 months, PA participants who reported >= 150 min center dot wk(-1) of moderate activity demonstrated a significantly greater improvement in their Short Physical Performance Battery score compared with participants who reported < 150 min center dot wk(-1) ofmoderate activity (P < 0.017). For the PA arm, center-based attendance was 76.3 +/- 24.5, 65.4 +/- 28.6, and 49.8 +/- 35.8% in the adoption, transition, and maintenance phases, respectively. Conclusions: Adherence to physical activity in LIFE-P was associated with greater improvement in SPPB score and was consistent with adherence in physical activity trials of shorter duration in this subgroup of older adults. Older individuals at risk for disability can adhere to a regular program of physical activity in a long-term randomized trial.
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