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Change in Physical Activity During a Weight Management Intervention for Breast Cancer Survivors: Association with Weight Outcomes.

ABSTRACT: OBJECTIVE:This study examined the effects of a group phone-based weight management intervention on change in physical activity as measured via accelerometer and self-report in rural breast cancer survivors. The study also evaluated the role of physical activity on clinically meaningful cut points for weight loss (baseline to 6 months) and weight loss maintenance (6 to 18 months). METHODS:Participants were breast cancer survivors in a weight management intervention who provided valid weight and accelerometer data (N?=?142). Participants were categorized into four groups based on weight loss??10% and weight regain??5% at 18 months. RESULTS:Accelerometer-measured moderate-to-vigorous physical activity (MVPA) significantly increased from baseline to 6 months (+46.9 minutes). MVPA declined during maintenance but remained significantly greater than baseline. Self-reported MVPA followed a similar pattern as accelerometer MVPA, but estimates were significantly higher. Participants in the high loss, low regain group had significantly higher MVPA at all points. CONCLUSIONS:A distance-based weight management intervention for survivors improved physical activity outcomes over 18 months. Self-reported physical activity was substantially higher than accelerometer measured. Findings highlight the importance of device-based measurement for characterizing the magnitude of physical activity change as well as the role of physical activity in weight management outcomes.

SUBMITTER: Fazzino TL

PROVIDER: S-EPMC5679351 | biostudies-literature | 2017 Nov

REPOSITORIES: biostudies-literature

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Change in Physical Activity During a Weight Management Intervention for Breast Cancer Survivors: Association with Weight Outcomes.

Fazzino Tera L TL Fabian Carol C Befort Christie A CA

Obesity (Silver Spring, Md.) 20171101

<h4>Objective</h4>This study examined the effects of a group phone-based weight management intervention on change in physical activity as measured via accelerometer and self-report in rural breast cancer survivors. The study also evaluated the role of physical activity on clinically meaningful cut points for weight loss (baseline to 6 months) and weight loss maintenance (6 to 18 months).<h4>Methods</h4>Participants were breast cancer survivors in a weight management intervention who provided val ...[more]

PMID: 29086523

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Project description:BackgroundEndometrial cancer survivors are at an increased risk of poor quality of life outcomes. Physical activity is positively associated with general quality of life in this population, however, little is known about how changes in physical activity may be associated with changes in specific aspects of quality of life. The aim of this secondary data analysis was to explore the relationships between change in physical activity and change in physical, mental, social, and other aspects of quality of life in endometrial cancer survivors receiving a physical activity intervention.MethodsEndometrial cancer survivors (N = 100) participated in a telephone-based physical activity intervention for six months. At baseline and post-intervention we measured physical activity via accelerometry and ecological momentary assessment, and quality of life via the Short Form Health Survey (SF-36), the Quality of Life of Adult Cancer Survivors instrument, the Brief Symptom Inventory, the Pittsburgh Sleep Quality Index, and the Perceived Stress Scale. We conducted structural equation modeling path analyses to investigate how physical activity post-intervention was associated with the quality of life measures' subscales post-intervention, adjusting for baseline levels and potentially confounding covariates.ResultsIncreasing physical activity was positively associated with improvements in general health (p = .044), role limitation due to physical health (p = .005), pain (p = .041), and somatic distress (p = .023). There was no evidence to indicate that change in physical activity was associated with change in other aspects of quality of life.ConclusionsEndometrial cancer survivors are at higher risk for suffering from challenges to physical quality of life, and findings from this study suggest that increasing physical activity may alleviate some of these problems. Further research is needed to determine whether other aspects of quality of life are linked to change in physical activity.Trial registrationTrial registration number: NCT00501761 Name of registry: clinicaltrials.gov Date of registration: July 16, 2007. Date of enrollment: June 16, 2005.

Dataset Information

Change in Physical Activity During a Weight Management Intervention for Breast Cancer Survivors: Association with Weight Outcomes.

Publications

Change in Physical Activity During a Weight Management Intervention for Breast Cancer Survivors: Association with Weight Outcomes.

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