2.50
Hdl Handle:
http://hdl.handle.net/10755/160988
Type:
Presentation
Title:
Comparison of Physical Activity Measures in Patients with Heart Failure
Abstract:
Comparison of Physical Activity Measures in Patients with Heart Failure
Conference Sponsor:Midwest Nursing Research Society
Conference Year:2010
Author:Pozehl, Bunny, PhD
P.I. Institution Name:UNMC College of Nursing
Contact Address:1230 O Street, STE 131, PO Box 880220, Lincoln, NE, 68588-0220, USA
Contact Telephone:402-472-7352
Co-Authors:B. Pozehl, K. Duncan, M. Hertzog, College of Nursing, University of Nebraska Medical Center, Lincoln, NE; J. Norman, Division of Physical Therapy Education, University of Nebraska Medical Center, Omaha, NE;
Introduction: Assessment of physical activity is an important outcome requiring valid and reliable measures for physical activity (PA) research in patients with heart failure (HF). Purpose: The purpose of this study was to assess reliability of two accelerometer measures of PA using Intraclass Correlation Coefficients (ICCs) and to compare PA levels from self-report and physiological assessment with accelerometers in patients with HF. Daily physical activity levels were compared for self-reported PA from the Modified 7 Day Physical Activity Recall (7 Day PAR) questionnaire and two accelerometry measures (RT3 and Actiheart). Methods: A cross-sectional descriptive design was used in a convenience sample of 31 elderly HF patients. Subjects had systolic HF with a mean ejection fraction of 29.1 plus 7.3% and a mean body mass index of 29.3 plus 5.6. Twenty-one males and ten females with a mean age of 72.5 plus 7.1 years wore the accelerometers for 7 days. The 7 Day PAR was completed by interview at the end of the week. Results: The RT3 and Actiheart had ICC reliability estimates of 0.92 and 0.83 respectively. Subjects were sedentary a mean of 96.0% of the time (23 of 24 hours per day). Sedentary activity ranged from 69.0% to 99.9% of the 24 hour day in this sample. Mean kilocalories per day spent in activity was not significantly different [t (df 27) = -0.99, p>0.05] between the two accelerometers. The Actiheart showed a mean of 355.9 plus 205.5 activity kilocalories per day as compared to the RT3 with 311.8 plus 215.3 activity kilocalories per day. Self-reported mean kilocalories per day from the 7 Day PAR was significantly (p<.001) higher (1221.5 plus 814.2 kcal) as compared to each of the accelerometers. Conclusions: Results from this study show that both accelerometers had acceptable reliability estimates with 7 days of measurement. Elderly HF patients are sedentary a majority of each 24 hour day and they consistently over-estimate physical activity with self-report as compared to objective measurement with accelerometry. Implications: Research to assess PA outcomes should not rely on self-report measures but must include a physiological measurement. Seven days of measurement with accelerometry provides acceptable reliability estimates in this elderly HF population.
Repository Posting Date:
26-Oct-2011
Date of Publication:
17-Oct-2011
Sponsors:
Midwest Nursing Research Society

Full metadata record

DC FieldValue Language
dc.typePresentationen_GB
dc.titleComparison of Physical Activity Measures in Patients with Heart Failureen_GB
dc.identifier.urihttp://hdl.handle.net/10755/160988-
dc.description.abstract<table><tr><td colspan="2" class="item-title">Comparison of Physical Activity Measures in Patients with Heart Failure</td></tr><tr class="item-sponsor"><td class="label">Conference Sponsor:</td><td class="value">Midwest Nursing Research Society</td></tr><tr class="item-year"><td class="label">Conference Year:</td><td class="value">2010</td></tr><tr class="item-author"><td class="label">Author:</td><td class="value">Pozehl, Bunny, PhD</td></tr><tr class="item-institute"><td class="label">P.I. Institution Name:</td><td class="value">UNMC College of Nursing</td></tr><tr class="item-address"><td class="label">Contact Address:</td><td class="value">1230 O Street, STE 131, PO Box 880220, Lincoln, NE, 68588-0220, USA</td></tr><tr class="item-phone"><td class="label">Contact Telephone:</td><td class="value">402-472-7352</td></tr><tr class="item-email"><td class="label">Email:</td><td class="value">bpozehl@unmc.edu</td></tr><tr class="item-co-authors"><td class="label">Co-Authors:</td><td class="value">B. Pozehl, K. Duncan, M. Hertzog, College of Nursing, University of Nebraska Medical Center, Lincoln, NE; J. Norman, Division of Physical Therapy Education, University of Nebraska Medical Center, Omaha, NE;</td></tr><tr><td colspan="2" class="item-abstract">Introduction: Assessment of physical activity is an important outcome requiring valid and reliable measures for physical activity (PA) research in patients with heart failure (HF). Purpose: The purpose of this study was to assess reliability of two accelerometer measures of PA using Intraclass Correlation Coefficients (ICCs) and to compare PA levels from self-report and physiological assessment with accelerometers in patients with HF. Daily physical activity levels were compared for self-reported PA from the Modified 7 Day Physical Activity Recall (7 Day PAR) questionnaire and two accelerometry measures (RT3 and Actiheart). Methods: A cross-sectional descriptive design was used in a convenience sample of 31 elderly HF patients. Subjects had systolic HF with a mean ejection fraction of 29.1 plus 7.3% and a mean body mass index of 29.3 plus 5.6. Twenty-one males and ten females with a mean age of 72.5 plus 7.1 years wore the accelerometers for 7 days. The 7 Day PAR was completed by interview at the end of the week. Results: The RT3 and Actiheart had ICC reliability estimates of 0.92 and 0.83 respectively. Subjects were sedentary a mean of 96.0% of the time (23 of 24 hours per day). Sedentary activity ranged from 69.0% to 99.9% of the 24 hour day in this sample. Mean kilocalories per day spent in activity was not significantly different [t (df 27) = -0.99, p&gt;0.05] between the two accelerometers. The Actiheart showed a mean of 355.9 plus 205.5 activity kilocalories per day as compared to the RT3 with 311.8 plus 215.3 activity kilocalories per day. Self-reported mean kilocalories per day from the 7 Day PAR was significantly (p&lt;.001) higher (1221.5 plus 814.2 kcal) as compared to each of the accelerometers. Conclusions: Results from this study show that both accelerometers had acceptable reliability estimates with 7 days of measurement. Elderly HF patients are sedentary a majority of each 24 hour day and they consistently over-estimate physical activity with self-report as compared to objective measurement with accelerometry. Implications: Research to assess PA outcomes should not rely on self-report measures but must include a physiological measurement. Seven days of measurement with accelerometry provides acceptable reliability estimates in this elderly HF population.</td></tr></table>en_GB
dc.date.available2011-10-26T23:14:04Z-
dc.date.issued2011-10-17en_GB
dc.date.accessioned2011-10-26T23:14:04Z-
dc.description.sponsorshipMidwest Nursing Research Societyen_GB
All Items in this repository are protected by copyright, with all rights reserved, unless otherwise indicated.