Exercise motivation and adherence in cancer survivors after participation in a randomized controlled trial: An attribution theory perspective

The purpose of this study was to examine postprogram exercise motivation and adherence in cancer survivors who participated in the Group Psychotherapy and Home-Based Physical Exercise (GROUP-HOPE; Courneya, Friedenreich, Sela, Quinney, & Rhodes, 2002) trial. At the completion of the GROUP-HOPE trial, 46 of 51 (90%) participants in the exercise group completed measures of attribution theory constructs. A5-week follow-up self-report of exercise wasthen completed by 30 (65%) participants. Correlational analyses indicated that program exercise, perceived success, expected success, and affective reactions were strong predictors of postprogram exercise. In multivariate stepwise regression analyses, program exercise and perceived successwere the strongest predictors of postprogram exercise. Additionally, perceived success was more important than objective success in understanding the attribution process, and it interacted with personal control to influence expected success and negative affect. Finally, postprogram quality of life and changes in physical fitness were correlates of perceived success. We concluded that attribution theory may have utility for understanding postprogram exercise motivation and adherence in cancer survivors.     

元认知策略对乳腺癌患者非理性信念的干预

目的探讨元认知策略对乳腺癌患者非理性信念的疗效。方法采用非理性信念量表分别于患者入院当天和出院后10个月应用非理性信念量表和元认知问卷(MCQ)对70例乳腺癌患者进行评定。结果元认知干预后患者的非理性信念水平(非理性信念总分;概括化评论分;低挫折忍耐;绝对化要求;糟糕至极)较干预前有显著性差异(t=6.52,2.94,13.902,20.284,5.311;P0.01)。乳腺癌患者的元认识干预前后在认知自信、积极信念、思维和控制需要及元认识总分比较有统计学意义(t=4.34,5.04,2.30,5.76;P0.05)。结论乳腺癌患者存在非理性信念,元认知对乳腺癌患者的非理性信念有一定的干预效果。     

The moderating effects of anxiety and breast cancer locus of control on depression

Research suggests that depression and anxiety can affect quality of life in breast cancer survivors. Moreover, certain cognitive control beliefs have been implicated in the development and maintenance of both depression and anxiety. The present study examined the relationship between breast cancer locus of control beliefs and depression in early-stage breast cancer survivors. The role of anxiety in moderating the relation between breast cancer locus of control and depression was also examined. Results showed that certain locus of control scores interact with anxiety to predict depression in early-stage breast cancer survivors. Findings further suggest that certain control beliefs previously considered adaptive in non-medically ill populations may be maladaptive in early-stage breast cancer survivors. Implications for further research are discussed.     

Ecological Momentary Assessment of Fatigue Following Breast Cancer Treatment

Fatigue is a common and debilitating symptom often experienced during and following cancer treatment. An Ecological Momentary Assessment (EMA) approach was used to examine the diurnal pattern of off-treatment fatigue in breast cancer survivors. Twenty-five breast cancer (BC) survivors 6-26 months posttreatment and age-matched groups of healthy women (HC; n = 25) and women with benign breast problems (BBP; n = 24) completed four daily diary measures of fatigue, pain, and mood for 5 consecutive days. Type of activity engaged in at the time of the diary assessments, as well as daily pedometer activity level, and nightly sleep duration were also assessed. While BC survivors reported greater levels of fatigue relative to BBP anid HC groups, no group differences in mood, activity type or level, sleep duration, or diurnal pattern of fatigue were evident. The results confirm that fatigue mav continue to be experienced long after conclusion of cancer treatment while questioning its clinical significance, provide insight into potential etiological mechanisms underlying off-treatment fatigue in, and demonstrate the value of EMA approaches to the study of cancer-related fatigue.     

Psychological effects and mediators of a group multi-component program for breast cancer survivors

This study evaluated the short-term impact of YWCA Encore, a mixed-modality group exercise and information support program for breast cancer patients situated in the community setting. Australian post-surgical breast cancer patients (N = 162) were assigned to either the 8-week Encore intervention or a Waitlist control. Intervention impact was assessed in terms of quality of life, cancer-specific distress, and social support. Changes in familiarity with exercise, self-efficacy and social support were tested as mediators of the intervention impact on quality of life. Overall adherence and satisfaction with the program were high. Significant enhancements at follow-up for quality of life and social support were evident for intervention compared with control participants. Familiarity with exercise and self-efficacy satisfied the requirements for mediation of quality of life. These findings provide evidence for psychosocial benefits of YWCA Encore multi-component program and support the use of such community-based programs for breast cancer survivors. The role of exercise familiarity and self-efficacy as probable mediators of the multi-component intervention is a critical finding and highlights the need for future investigations into the underlying mediating processes of similar interventions for cancer patients.     

Breast cancer delay in Latinas: the role of cultural beliefs and acculturation

Cultural beliefs about breast cancer may act as a barrier to Latina women seeking preventive services or timely follow-up for breast symptoms regardless of access. This study examines the association between factors and breast cancer cultural beliefs and the extent to which cultural beliefs are associated with delays in breast cancer care. Participants who were Latina, ages 30–79, and had been diagnosed with a primary breast cancer were examined (n = 181). Interviews included a 15-item cultural beliefs scale spanning beliefs inconsistent with motivation to seek timely healthcare. Self-reported date of symptom discovery, date of first medical presentation, and date of first treatment were used to construct measures of prolonged patient, clinical, and total delay. Logistic regression with model-based standardization was used to estimate crude and confounder-adjusted prevalence differences for prolonged delay by number of cultural beliefs held. Women held a mean score of three cultural beliefs. The belief most commonly held was, “Faith in God can protect you from breast cancer” (48 %). Holding three or more cultural beliefs was associated with lower acculturation, lower socioeconomic status and less access to care (p < 0.01). After adjusting for age, education, income, acculturation, trust, and insurance, likelihood of prolonged total delay remained 21 percentage points higher in women who held a higher number cultural beliefs (p = 0.02). Cultural beliefs may predispose Latina women to prolong delays in seeking diagnosis and treatment for breast symptoms. Cultural beliefs represent a potential point of intervention to decrease delays among Latina breast cancer patients.     

Spirituality, breast cancer beliefs and mammography utilization among urban African American women

Spirituality has been shown to be associated with health, and is an important component in the lives of many African Americans. Recent research proposes that spirituality is a multidimensional construct. The present study proposes a two-dimensional model in which spirituality encompasses a belief and behavioral dimension. This hypothesis was examined, as were relationships between these dimensions and spiritual health locus of control, breast cancer beliefs and mammography utilization among African American women. The belief dimension played a more important role in adaptive breast cancer beliefs and mammography utilization that did the behavioral dimension. These findings suggest the importance of spiritual belief systems for health, and implications for spiritual cancer communication interventions are discussed.     

An 8-week exercise study to improve cancer treatment related fatigue and QOL among African American breast cancer patients undergoing radiation treatment: A pilot randomized clinical trial

BackgroundCancer treatment related fatigue (CTRF) is one of the most debilitating side effects of adjuvant radiation therapy (RT). Several studies have found that physical activity (PA) may be an effective intervention to decrease fatigue and enhance QOL in cancer survivors. The primary objective of the PEDLAR study is to test the feasibility of an easily administered 8-week structured moderate-intensity PA intervention, delivered concurrently with RT, in reducing CTRF and improving health-related QOL among African-American breast cancer patients. This study is also designed to provide pilot data on the acceptability and adherence of PA interventions in African-American women with breast cancer.MethodsIt is a prospective, 2-arm, 8-week feasibility trial. Participants are randomized to either a structured, moderate-intensity aerobic training exercise regimen concurrent with radiotherapy or a control group.ResultsParticipants in intervention group reported high satisfaction with exercise and adherence was >75% for exercise sessions.ConclusionsAfrican-American breast cancer patients in a moderate-intensity 75 min/wk aerobic exercise intervention had marginally lower fatigue at 8-wk follow-up compared to baseline. The control group participants had marginally higher fatigue at 8-wk follow-up compared to baseline. Participants in the intervention group reported slightly better quality of life at 8-wk follow-up compared to baseline (P = 0.06).     

Group versus individual exercise interventions for women with breast cancer: a meta-analysis

Abstract

Background. Both during and after treatment, cancer survivors experience declines in physical and psychosocial quality of life (QoL). Prior research indicates that exercise interventions alleviate problems in physical functioning and some aspects of psychological functioning. For survivors seeking social support, exercise programmes that are conducted in group settings may foster optimal QoL improvement (by addressing additional issues related to isolation and social support) over individually based exercise programmes. Methods. We reviewed literature on group cohesion in exercise studies, and conducted a meta-analysis to test the hypothesis that group as compared to individual exercise interventions for breast cancer survivors would show greater improvement in QoL. Results. As currently implemented, group exercise interventions showed no advantage. However, they typically did not provide any evidence that they capitalised upon potentially beneficial group processes. Conclusions. Future exercise intervention studies could investigate the effect on QoL of deliberately using group dynamics processes, such as team-building experiences and group goal setting to foster group cohesion.     

Physical activity and biomarkers in breast cancer survivors: A systematic review

Breast cancer is the most common cancer among women. The number of breast cancer survivors has increased due to screening and improved treatment methods, which makes it important to increase knowledge on their health and well-being. Physical activity has been reported to improve quality of life, decrease fatigue and reduce all-cause and breast cancer-specific mortality in breast cancer survivors. The beneficial effects of physical activity may manifest themselves in circulating levels of insulin, insulin-growth factors (IGFs) I and II and their binding proteins (IGFBPs), or inflammatory biomarkers. The aim of this report was to review available randomized controlled trials (RCTs) on the effects of physical activity on biomarkers in breast cancer survivors. We identified 12 publications based on nine RCTs that fulfilled our inclusion criteria published until 19th June 2012. The RCTs were small (16–101 breast cancer survivors); mean BMI was ≥25 and the mean age in 8 out of 9 RCTs was approximately 50 years. Five RCTs reported statistically significant effects of physical activity on insulin, IGF-I, IGF-II and IGFBP-3 in breast cancer survivors, but the results were not consistent. None of four RCTs found any evidence for a role of investigated interleukines. One trial reported some evidence that exercise may decrease C-reactive protein levels. In conclusion, available RCTs have produced some evidence that physical activity may result in beneficial changes in levels of insulin, IGFs, IGFBPs, and inflammatory biomarkers in breast cancer survivors. However, further larger RCTs on physical activity and biomarkers in breast cancer survivors are warranted.     

One-on-one peer support and quality of life for breast cancer patients

The Canadian Cancer Society's Reach to Recovery program provides one-on-one support for breast cancer patients that is delivered by breast cancer survivors. Professionally-led social support programs have generally been found to influence positively the quality of life of cancer patients. However, there is a lack of evidence on the benefits of one-on-one peer support programs. An evaluation of the Reach to Recovery program was completed in 1995 to determine if cancer patients who received the program were satisfied with the program and to determine if participation in Reach to Recovery affected the quality of life of program participants compared to patients who did not receive the program. We found that Reach to Recovery program participants were generally satisfied with the program they received and that the program has incremental benefits to the quality of life of patients with breast cancer. Peer-led, volunteer breast cancer support programs can be effective in enhancing the quality of life of breast cancer patients.     

Adapting a peer-led self-management program for breast cancer survivors in Switzerland using a co-creative approach

ObjectiveThe peer-led Cancer Thriving and Surviving Program (CTS) has demonstrated improved health outcomes for cancer survivors. We describe a co-creative process for adapting the CTS for breast cancer survivors in Switzerland and integrating the program into the clinical pathway of Swiss breast centers.MethodsA co-creative approach was employed. Breast cancer survivors and health care professionals (total n = 81) participated in three workshops, an online rating, and a consensus conference. An iterative cycle (evidence, ideas, refining, rating, and synthesis) guided the adaptation process.ResultsSurvivors involvement in the adaptation process allowed to tailor the self-management program to the psychosocial needs identified as the highest priority. New contents “Being a woman”, “Breast cancer and my (working) life” and “My exercise” were added to the CTS. Program duration was expanded from 6 to 7 weeks. Transition to follow-up care was considered as the optimal time point for program integration into the clinical pathway.ConclusionThe co-creative process may serve as a model in adapting supportive interventions for cancer. A subsequent pilot testing examined the feasibility and preliminary efficacy.Practice implicationsCombining expertise of health care professionals and patients to co-create a peer-led breast cancer self-management program may enhance acceptability and adoption.     

Brief report: health beliefs among survivors of childhood cancer

OBJECTIVE: To describe interest in cancer screening and tobacco-control procedures (nicotine-addiction susceptibility testing) among survivors of childhood cancer and to identify psychosocial modifying and readiness factors associated with survivors' interest, based on the children's health belief model. METHODS: Twenty-eight survivor-mother dyads were interviewed as part of a preliminary study (mean age of survivors = 15.4 years at time of interview, 10.1 years at time of diagnosis, and 12.0 years at end of treatment); interviews consisted of well-validated self-report items and measures of health beliefs. RESULTS: In sum, 57% and 61% of survivors were interested in screening and susceptibility testing, respectively. Survivors who rated themselves as more competent, more concerned about cancer, and more vulnerable to cancer were more interested in participating in screening. Regarding interest in nicotine-addiction susceptibility testing, survivors were more interested when they perceived greater vulnerability to the harm of smoking and when they had mothers who perceived themselves to be in better health. CONCLUSIONS: Preliminary data suggest that psychosocial modifying and readiness factors are associated with survivors' interest in cancer screening and tobacco-control procedures and that additional research in this area is warranted.     

Going quasi: the premature disclosure effect in a randomized clinical trial

This paper describes a randomized clinical trial investigating a stress management program for women with breast cancer, which inadvertently turned quasi-experimental. Due to logistical considerations, group assignment was disclosed to participants (n = 63) prior to baseline assessment. Analyses of baseline measures unexpectedly revealed statistically significant differences between groups on psychological functioning. We suggest that what appears to be failed randomization may in fact point toward an important phenomenon which we have termed premature disclosure effect (PDE). A hierarchical regression model, developed to help explain the PDE, accounted for 47% of the variance. The findings indicate the importance of considering participant belief, preferences, and attributes when designing research protocols and interventions. Potential implications of PDE for clinical research in behavioral medicine are discussed and specific statistical methodologies suggested.     

Exercise and Diet Beliefs of Overweight Women Participating in an Exercise and Diet Program: An Elicitation Study Using the Theory of Planned Behavior1

The purpose of this study was to examine the exercise and diet beliefs of overweight women using the theory of planned behavior. Participants were 104 overweight community women and university students who completed a 4‐week exercise and diet program. The most salient exercise beliefs for the participants were (a) increased motivation, structure and accountability, and social support (behavioral beliefs); (b) job or school responsibilities and traveling (control beliefs); and (c) group members and the program trainer (normative beliefs). The most salient diet beliefs were (a) improved eating habits and convenience (behavioral beliefs), (b) lack of control over food preparation and inconvenience (control beliefs), and (c) family and spouse or significant other (normative beliefs). These results are discussed in comparison to beliefs held by different populations and in regard to implications for intervention design.     

An application of an extended health belief model to the prediction of breast self‐examination among women with a family history of breast cancer

Objectives. This study reports an application of the health belief model (HBM) to the prediction of breast self‐examination (BSE) among women with a family history of breast cancer. The study also considered the influence of breast cancer worries and past behaviour. Methods. Eight hundred and thirty‐three women completed questionnaires, based on the HBM, to assess their beliefs about breast cancer and BSE. Of these women, 567 were followed‐up at 9 months when BSE frequency was assessed. Results. Discriminant function analysis was employed to discriminate among infrequent, appropriate and excessive BSE. Two functions were calculated which were predictive of group membership. The first function maximally discriminated between the infrequent BSE group and the other two groups, with infrequent self‐examiners reporting a greater number of self‐efficacy and emotion barriers, fewer benefits and less frequent BSE at Time 1. The second function maximally discriminated between the excessive BSE group and the appropriate BSE group, with excessive self‐examiners reporting higher levels of breast cancer worries and perceived severity and fewer self‐efficacy barriers. Conclusions. The results highlight the importance of focusing on excessive as well as infrequent BSE. Interventions designed to enhance women's confidence in their ability to perform BSE, coupled with attempts to reduce breast cancer worries, may encourage more appropriate and effective BSE.     

Shoulder impairments and their association with symptomatic rotator cuff disease in breast cancer survivors

Over 2.6 million breast cancer survivors currently reside in the United States. While improvements in the medical management of women diagnosed with breast cancer have resulted in a 5-year survival rate of 89%, curative treatments are associated with a high prevalence of shoulder and arm morbidity, which, in turn, can negatively impact a woman’s quality of life. Breast cancer survivors frequently experience shoulder and arm pain, decreased range of motion, muscle weakness, and lymphedema. These symptoms can lead to difficulties with daily activities ranging from overhead reaching and carrying objects to caring for family and returning to work.Despite health care professionals awareness of these problems, a significant number of breast cancer survivors are confronted with long-term, restricted use of their affected shoulder and upper extremity. This problem may partially be explained by: (1) an incomplete understanding of relevant impairments and diagnoses associated with shoulder/arm pain and limited upper extremity use, and (2) the limited effectiveness of current rehabilitation interventions for managing shoulder pain and decreased upper extremity function in breast cancer survivors.Because breast cancer treatment directly involves the neuromusculoskeletal tissues of the shoulder girdle, it is understandable why breast cancer survivors are likely to develop shoulder girdle muscle weakness and fatigue, decreased shoulder motion, altered shoulder girdle alignment, and lymphedema. These impairments can be associated with diagnoses such as post-mastectomy syndrome, adhesive capsulitis, myofascial dysfunction, and brachial plexopathy, all of which have been reported among breast cancer survivors. It is our belief that these impairments also put women at risk for developing symptomatic rotator cuff disease.In this paper we set forth the rationale for our belief that breast cancer treatments and subsequent impairments of shoulder girdle neuromusculoskeletal tissues place breast cancer survivors at risk for developing symptomatic rotator cuff disease. Additionally, we identify knowledge gaps related to the current understanding of relevant shoulder girdle impairments and their association with symptomatic rotator cuff disease in breast cancer survivors. Ultimately, information from studies designed to meet these gaps will provide a scientific basis for the development of new, or refinement of existing, examination, intervention, and prevention techniques, which should lead to improved clinical outcomes in this population.     

Rural and Small Town Breast Cancer Survivors’ Preferences for Physical Activity

Background

Recent data suggests that only 35 % of rural and small town breast cancer survivors are achieving physical activity (PA) guidelines after treatment.

Purpose

The purpose of this study was to determine preferences for PA counseling and programming and barriers to program participation in a sample of rural and small town breast cancer survivors.

Methods

Survivors (n?=?524) residing in rural and small town areas of Alberta, Canada completed a mailed self-report survey that assessed demographic variables, PA, and PA counseling and programming preferences.

Results

Seventy-eight percent of survivors indicated they would have possibly (i.e., yes or maybe) been interested in being counseled about PA at the time of diagnosis, while 70 % would possibly be interested in being counseled about PA at this current time. Overall, 85 % felt they would possibly be able to participate in a PA program. Receiving chemotherapy was negatively associated with wanting to receive PA counseling (odds ratio [OR]?=?0.58; 95 % confidence interval [CI], 0.39 to 0.86), PA program interest (OR?=?0.43; 95 % CI, 0.28 to 0.67), and PA program ability (OR?=?0.44; 95 % CI, 0.26 to 0.75). Preferred activities involved walking (51 %), flexibility and related activities (e.g., yoga, stretching) (36 %), and strength training (27 %).

Conclusions

Rural and small town survivors appear to be interested in and able to participate in PA counseling and programs. PA initiatives targeted to the preferences of breast cancer survivors living in nonurban areas may be more likely to facilitate and maintain PA behavior.     

The Effect of a Multifaceted Efficacy Intervention on Exercise Behavior in Relatives of Colon Cancer Patients

Background

Regular physical activity (PA) provides health benefits; however, at least 60% of the population fails to engage in the recommended amount of PA required to produce these health benefits.

Purpose

The primary purpose of the study was to examine over a 12-week structured exercise program the effect of a multifaceted efficacy intervention (MEI??i.e., task and specific types of self-regulatory efficacy) on objectively measured exercise behavior. Secondary purposes were to examine the effect of the MEI on both task and self-regulatory efficacy levels; and to determine whether efficacy beliefs could predict exercise behavior.

Methods

Relatives of colon cancer patients (N?=?140) were enrolled in an exercise program, and were randomized to either a MEI or attention control condition, and took part in classroom sessions. Behavior was assessed throughout the 12-week program using objective measures of frequency, duration, and intensity of exercise, and dropout rates, while self-reported task, barrier, scheduling, goal-setting, and relapse prevention efficacy were assessed at baseline and weeks?4, 8, and 12.

Results

The MEI group exercised for longer duration in the early phase of the program (i.e., 0?C4?weeks); however, no significant differences were noted for exercise frequency and intensity. Differential dropout was found favoring the MEI group at weeks?8 and 12. No treatment condition differences were found for reported efficacy beliefs. Proceeding self-efficacious beliefs were associated with objective measures of behavior.

Conclusions

A MEI grounded in Social Cognitive Theory was partially effective in influencing colon cancer relatives?? exercise behavior.     

Physical exercise and quality of life in breast cancer survivors

An important goal for cancer patients is to improve the quality of life (QOL) by maximising functions affected by the disease and its therapy. Preliminary research suggests that exercise may be an effective intervention for enhancing QOL in cancer survivors. Research has provided preliminary evidence for the safety, feasibility, and efficacy of exercise training in breast cancer survivors. The aim of this study was to assess the association between physical exercise and quality of life in a population of female breast cancer survivors, followed up from diagnosis to the off-treatment time period, and investigated about their exercise habits in pre-diagnosis.A total of 212 female breast cancer survivors consecutively registered from January 2002 to December 2006 at a Supportive Care Unit in an Italian Oncology Department were enrolled. Exercise behaviour was assessed by the Leisure Score Index (LSI) of the Godin Leisure-Time Exercise Questionnaire. Patients were asked to report their average weekly exercise for three cancer-related time periods, i.e. pre-diagnosis, during active treatment and off-treatment. Quality of life was assessed by the Italian version of the WHOQOL-BREF standardised instrument. Statistical analysis indicated significant differences across the cancer-relevant time-periods for all exercise behaviour outcomes: the exercise behaviour was significantly lower during both on- and off- treatment than during prediagnosis; exercise during active treatment was significantly lower than during off-treatment. QOL strongly decreases during active treatment. Significant correlations were found between total exercise on- and off-treatment and all QOL indicators. Strenuous exercise is strongly correlated with QOL. Absent/mild exercise seems to be inversely correlated with a positive perception of disease severity and with quality of life on all axes. Need clearly results for inclusion of physical activity programs in comprehensive, complementary treatment regimes for breast cancer patients in Italian oncology departments.