Abstract 15154: Objectively Measured Physical Activity in Patients With Heart Failure

Abstract

Introduction: Novel interventions, such as exergaming, might be promising to increase physical activity (PA). We aim to explore the difference in PA in patients with heart failure (HF) who have access to exergaming compared to patients who received motivational support and to explore predictors of PA increase. Methods: This study is part of the HF-Wii study (patients randomized to exergaming or to motivational support) in which a group of HF patients (n=64, mean age 69±9, 27% female, 80% NYHA I/II) wore an accelerometer (Actigraph GT9X). Ten minutes change in daily non-sedentary PA was defined as clinically relevant change. Potential predictors of PA change were, i.e. demographic and clinical variables, self-efficacy (ESS), exercise motivation (EMI), depression (HADs) and Health-related Quality of Life (MLHFQ) analyzed by independent sample t-tests and chi-square. Factors with a significance of 0.15 in the univariate analysis were tested in a logistic regression analysis, corrected for randomization, age, gender and NYHA-class and baseline values for light PA and moderate- to vigorous physical activity (MVPA). Results: No differences were found between the exergame group and the control group at 3 months in activity counts (p=0.27), sedentary time (p=0.16), light PA (p=0.69) or MVPA (p=0.17). At baseline, patients had a mean of 173718 (±100545) PA counts/day; 9 hours and 43 minutes a day (±1h 23min) were spent sedentary, 3 hours and 29 minutes a day (±1h 6min) on light PA and 43 minutes a day (±1h 5min) on MVPA ) and 28 patients increased their PA. History of stroke (p=0.05), having grandchildren (p=0.04), recently diagnosed HF (p=0.04), total motivation (p=0.12) and social motivation (p=0.05) were included for the multivariate analysis. Only recently diagnosed HF (p=0.01), a higher social motivation (p=0.02) and a lower amount of light PA at baseline were independent predictors of increasing PA. Conclusions: Exergaming did not significantly change PA. A recently diagnosed HF, higher social motivation and lower baseline light PA are factors that need to be considered when developing PA interventions and when motivating patients to become more physically active.