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Sleep Quality and Physical Activity Level in Postmenopausal Women with Breast Cancer

Ashley Bleiler, BSN Candidate; Kirk Erickson, PhD; Amanda Gentry, MPH; Susan Sereika, PhD; and Catherine Bender, PhD, RN, FAAN; Department of Health & Community Systems, University of Pittsburgh School of Nursing, 3500 Victoria Street, Pittsburgh, PA 15213

Background: Disruption of sleep quality is a commonly-reported experience in women with breast cancer. Studies have found that a physical activity intervention can improve overall sleep quality in these women. The purpose of this secondary analysis study is to explore the relationship between perceived sleep quality and objective physical fitness in postmenopausal women with early stage breast cancer. Methods: Data were taken from the Exercise Program in Cancer and Cognition study: a clinical trial examining the effect of exercise on cognitive function in women with breast cancer. Perceived sleep quality was measured with the Pittsburgh Sleep Quality Index global and component scores (sleep quality, sleep latency, and sleep disturbances), in which lower scores indicated better sleep quality. Physical activity data were collected with the SenseWear Armband, which participants were instructed to wear continuously for 7 days in order to quantify daily average physical activity measures. Data were analyzed descriptively and using partial correlations (Pearson r), with the level of statistical significance set at .05. Results: Participants (n=67) were, on average, 63.9 (+/- 5.39) years old with 15.4 (+/- 2.44) years of education. The average PSQI global score was 6.7 (+/- 3.57), out of 21 possible points. Greater total hours of moderate physical activity, total energy expenditure, and total active energy expenditure were associated with fewer sleep disturbances (r=-.274, p=.033; r=-.352, p=.005; r=-.271, p=.034 respectively). Greater average steps per day and daily awake sedentary time were associated with lower sleep latency (r=-.244, p=.058; r=-.264, p=.04). Greater average daily awake sedentary time was also associated with overall subjective sleep quality (r=-.319, p=.012). Conclusion: These results suggest that higher amounts of moderate physical activity throughout the day are associated with better perceived sleep quality for women with breast cancer. Further research is warranted to examine these relationships in larger, more diverse populations.




Additional Abstract Information

Presenter: Ashley Bleiler

Institution: University of Pittsburgh School of Nursing

Type: Oral

Subject: Nursing & Public Health

Status: Approved


Time and Location

Session: Oral 6
Date/Time: Tue 2:00pm-3:00pm
Session Number: 628
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