Abstract 15978: The Lifestyle Physical Activity for Sedentary Older Women (LPAW) Study: Primary Outcomes From a Randomized Controlled Clinical Trial
Introduction: Evidence is clear that a physically active lifestyle reduces the human and economic cost of heart disease in a dose-response relationship; but current efforts to increase long-term physical activity (PA) are inadequate.
Purpose/hypothesis: To test whether a parsimonious and tailored motivational interviewing (MInt) intervention would increase home-based PA.
Methods: We conducted a single-blinded randomized controlled study of sedentary women aged 60 years and older to test a MInt counseling intervention for PA. Lifestyle physical activity was promoted by 2 one-on-one counseling sessions and coaching telephone calls tapering in frequency over 6 months. Women wore Triaxial accelerometers for 7 days to collect data at 0-, 3-, and 6-months to include vector magnitude activity counts, time spent in sedentary, light, moderate and vigorous activity, time spent in lifestyle PA bouts, sedentary time and daily energy expenditure.
Results: 123 older women (mean age 69; 64% White; 34% African American) without significant functional or cognitive impairment were randomized to the MInt intervention or PA information/attention control groups. Risk factor profiles designated participants at high-risk for coronary heart disease (70% hypertensive, 48% hyperlipidemic, 25% diabetic, mean BMI 31). At baseline (Time 0) PA was similar; at Time 3 and 6 months the MInt group increased step counts per day (0=3.3K vrs 3.7K; 3=4.2K vrs 3.8K; 6= 4.0K vrs 3.5K) vector magnitude activity counts (0=322K vrs 335K; 3=370K vrs 336K; 6=344K vrs 318K), time in moderate to vigorous activity (0=225 minutes/week vrs 244; 3=288 vrs 247; 6= 261 vrs 225) significantly greater when compared to Control (all with p < .05). PA bouts remained greater and overall sedentary behavior was reduced in the MInt group and maintained over time.
Conclusions: The LPAW intervention was successful in improving home-based PA over 6 months and should be tested broadly in other populations.
Author Disclosures: L.L. Lefler: None. J.C. McSweeney: None. S.Y. Lensing: None. K.K. Garner: None. P.K. Dubbert: None. K.A. Packard: None.
- © 2015 by American Heart Association, Inc.