Megan E Renna1, M Rosie Shrout2, Annelise A Madison3, Jeanette M Bennett4, William B Malarkey5, Charles F Emery3, Janice K Kiecolt-Glaser6. 1. School of Psychology, University of Southern Mississippi, USA. Electronic address: megan.renna@usm.edu. 2. Department of Human Development & Family Studies, Purdue University, USA. 3. Institute for Behavioral Medicine Research, The Ohio State University College of Medicine, USA; Department of Psychology, The Ohio State University, USA. 4. Department of Psychological Science, University of North Carolina at Charlotte, USA. 5. Institute for Behavioral Medicine Research, The Ohio State University College of Medicine, USA; Department of Internal Medicine, The Ohio State University College of Medicine, USA. 6. Institute for Behavioral Medicine Research, The Ohio State University College of Medicine, USA; Department of Psychiatry and Behavioral Health, The Ohio State University College of Medicine, USA.
Abstract
BACKGROUND: Breast cancer survivors face a number of physical health threats including cardiovascular disease, the leading cause of death among breast cancer survivors. Low heart rate variability (HRV) represents one well-established risk factor for poor cardiovascular health. Among physically healthy adults and breast cancer survivors, distress disorders may contribute to lower HRV, enhancing morbidity and mortality. This study examined how a distress disorder history altered survivors' HRV trajectories during and after an experimental stressor. METHODS: Breast cancer survivors (n = 178; mean age = 51.22) who finished treatment for stages 0-IIIa cancer within the past two years completed a diagnostic interview assessing lifetime presence of psychological disorders. They also participated in a Trier Social Stress Test (TSST). HRV data provided information on survivors' cardiovascular responses at baseline, during the TSST, and during recovery. HRV recovery data at 45 min and 120 min post-TSST was also collected. Survivors also completed questionnaires before and after the TSST assessing task performance, stress levels, ability to cope, and hopelessness. Covariates included body mass index, age, cancer stage, cardiovascular medications, exercise, menopause status, fatigue, current depressive and anxiety symptoms, and physical comorbidities. RESULTS: Women with a distress disorder history had significantly lower HRV before, during, and after the TSST compared to women without such a history. Survivors with distress disorders found the TSST to be more threatening, and reported feeling less control over their performance than those without distress disorders. CONCLUSIONS: Breast cancer survivors with a distress disorder history may have lower autonomic flexibility before, during, and after stress exposure. Distress disorder histories also heighten several stress-related risk perceptions leading up to and following the TSST. These findings highlight distress disorder histories as a unique correlate of poorer cardiovascular function among survivors.
BACKGROUND: Breast cancer survivors face a number of physical health threats including cardiovascular disease, the leading cause of death among breast cancer survivors. Low heart rate variability (HRV) represents one well-established risk factor for poor cardiovascular health. Among physically healthy adults and breast cancer survivors, distress disorders may contribute to lower HRV, enhancing morbidity and mortality. This study examined how a distress disorder history altered survivors' HRV trajectories during and after an experimental stressor. METHODS: Breast cancer survivors (n = 178; mean age = 51.22) who finished treatment for stages 0-IIIa cancer within the past two years completed a diagnostic interview assessing lifetime presence of psychological disorders. They also participated in a Trier Social Stress Test (TSST). HRV data provided information on survivors' cardiovascular responses at baseline, during the TSST, and during recovery. HRV recovery data at 45 min and 120 min post-TSST was also collected. Survivors also completed questionnaires before and after the TSST assessing task performance, stress levels, ability to cope, and hopelessness. Covariates included body mass index, age, cancer stage, cardiovascular medications, exercise, menopause status, fatigue, current depressive and anxiety symptoms, and physical comorbidities. RESULTS: Women with a distress disorder history had significantly lower HRV before, during, and after the TSST compared to women without such a history. Survivors with distress disorders found the TSST to be more threatening, and reported feeling less control over their performance than those without distress disorders. CONCLUSIONS: Breast cancer survivors with a distress disorder history may have lower autonomic flexibility before, during, and after stress exposure. Distress disorder histories also heighten several stress-related risk perceptions leading up to and following the TSST. These findings highlight distress disorder histories as a unique correlate of poorer cardiovascular function among survivors.
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