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Linda Trinh, PhD Faculty of Kinesiology and Physical Education University of Toronto May 27, 2014

Abstract No. 1234. Physical and Psychological Health Among Breast Cancer Survivors: Interactions with Sedentary Behaviour and Physical Activity. Linda Trinh, PhD Faculty of Kinesiology and Physical Education University of Toronto May 27, 2014. Introduction.

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Linda Trinh, PhD Faculty of Kinesiology and Physical Education University of Toronto May 27, 2014

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  1. Abstract No. 1234 Physical and Psychological Health Among Breast Cancer Survivors: Interactions with Sedentary Behaviour and Physical Activity Linda Trinh, PhD Faculty of Kinesiology and Physical Education University of Toronto May 27, 2014

  2. Introduction • Lifestyle strategiesmay reduce the chronic and late-appearing physical and mental health effects of cancer treatment (Mishra et al., 2012; Bicego et al., 2009). • Breast cancer survivors (BCS) spend 66% of their time sedentary and 1% in moderate-to-vigorous physical activity (MVPA) (Lynch et al., 2010). • Sedentary behaviour (SED) is defined as any waking behaviour characterized by a low energy expenditure (i.e., ≤1.5 resting metabolic equivalents) while in a sitting or reclining posture (SBRN, 2012). • Independent of PA, high volumes of SED are associated with chronic disease-related risk factors (Lynch et al., 2013).

  3. Purpose • To examine the associations between SED with pain, fatigue, and dysphoria among BCS. • A secondary objective was to determine the moderating effect of MVPA on these associations.

  4. Methods Participants • BCS (N=199) were recruited at local medical clinics and hospitals in Montreal, Quebec • Part of an on-going longitudinal study (Life After Breast Cancer: Moving On)exploring the natural developmental changes in lifestyle behaviours Measures • Physical Activity and Sedentary Behaviour • Objective assessment through GT3X accelerometry • Pain Symptoms (Spitzer et al., 1994) • Self-report symptoms (e.g., stomach pain, pain in arm/leg joints) • Fatigue and Dysphoria(Usala et al., 1989) • Self-report with abbreviated version of the Profile of Mood States (POMS)

  5. Results • 195 BCS provided complete data (98% of the total sample) • 78.2% in sedentary pursuits; 1.9% engaged in MVPA • Sample Characteristics • Mean age=54.5±11.1 • Mean BMI=26.4±5.7 • 80.5% had Stage I or II disease • 60.0% lumpectomy • 64.1% chemotherapy

  6. Effects of MVPA and Sedentary Behaviour on Pain β=.03, p=.06

  7. Effects of MVPA and Sedentary Behaviour onFatigue β=.04, p<.001

  8. Effects of MVPA and Sedentary Behaviour onDysphoria β=-.02, p=.08

  9. Summary • BCS have low levels of MVPA and high levels of SED during the early post-treatment period. • Prolonged sitting time coupled with lower levels of MVPA contribute to higher levels of physical symptoms, but not mental health. • Early post-treatment phase represent an ideal opportunity to target positive lifestyle changes. • Additional research is warranted to understand the role of SED and health of BCS and other cancer survivor groups.

  10. Acknowledgements • Primary investigator • Catherine M. Sabiston, PhD • Co-Investigators • CarstenWrosch, PhD • Jennifer L. O'Loughlin, PhD • SarkisMeterissian, MD • Jennifer Brunet, PhD • Patrick Gaudreau, PhD • Co-Authors • Jason Lacombe, BSc • Steve Amireault, PhD Canadian Institutes of Health Research (CIHR): Grant #186128

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