Influence of Yoga on Cancer-Related Fatigue and on Mediational Relationships Between Changes in Sleep and Cancer-Related Fatigue: A Nationwide, Multicenter Randomized Controlled Trial of Yoga in Cancer Survivors

[Complementary and integrative medicine in cancer-related fatigue]

The majority of cancer patients experience fatigue during the course of their illness. Fatigue should not be seen as an inevitable consequence of cancer and its treatment. Cancer-related fatigue (CRF) is a multidimensional symptom complex that is influenced by a variety of factors. Complementary medicine approaches offer potentially promising strategies to address this fatigue and can therefore be a valuable addition to conventional therapies.In this narrative review, complementary medicine treatment approaches for tumor-associated fatigue are presented according to the historical development and current scientific evidence. The focus is on methods with the highest current evidence based on the recommendations of national and international guidelines. Therapeutic approaches from mind-body medicine, such as mindfulness-based stress reduction (MBSR), mindfulness-based cognitive therapy (MBCT), yoga, tai chi, and qigong, as well as acupuncture, acupressure, moxibustion, and phytotherapeutic treatment approaches are presented.In Germany, the complementary therapies listed here are not generally covered by health insurances. However, a few clinics have developed comprehensive programs in mind-body medicine, for which cost coverage has already been obtained. As a result, complementary medical treatments for cancer-related fatigue that adhere to national and international guidelines are typically available only as private services or within the framework of study participation.

The effect of YOCAS©® yoga on cancer-related fatigue and quality of life in older (60+) vs. younger (≤ 59) cancer survivors: Secondary analysis of a nationwide, multicenter, phase 3 randomized controlled trial

INTRODUCTION

Older cancer survivors consistently express the need for interventions to reduce cancer-related fatigue (CRF) and maintain quality of life (QOL). Yoga is a promising treatment to address CRF and QOL. However, research comparing the efficacy of yoga for improving fatigue and QOL in older survivors (60+) vs. younger adult survivors (≤59)is limited. Our objective was to examine the effects of yoga on CRF and QOL in older survivors vs. younger survivors.

MATERIALS AND METHODS

We conducted a secondary analysis of a nationwide, multicenter, phase 3 randomized controlled trial. For this study, participants who provided evaluable pre- and post-intervention data on the Functional Assessment for Chronic Illness Therapy-Fatigue (FACIT-F) and the Functional Assessment for Cancer Therapy-General (FACT-G) were eligible. The yoga intervention comprises gentle Hatha and Restorative Yoga and includes breathing exercises, physical alignment postures, and mindfulness.

RESULTS

Of the 177 participants included in the study, 30.1 % were aged 60+ and 69.9 % were aged ≤59. More younger participants had breast cancer (82.0 % vs. 59.2 %. p = 0.009), surgery (98.9 % vs. 77.8 %, p < 0.001), and chemotherapy (80.5 % vs. 55.6 %, p = 0.001). There were no differences in the cancer stage (66.1 % stage I or II). There were statistically significant and clinically meaningful within-group improvements from baseline to post-intervention in CRF for participants aged ≤59 and participants aged 60+ (4.0 ± 0.7, p < 0.001 vs. 3.1 ± 1.0, p = 0.003). Both age groups also demonstrated improvements in QOL (3.2 ± 0.8, p < 0.001 vs. 2.1 ± 1.2, p = 0.078), physical (1.6 ± 0.3, p < 0.001 vs. 0.8 ± 0.5, p = 0.084), functional (0.7 ± 0.3, p = 0.048 vs. 1.0 ± 0.5, p = 0.037), and emotional well-being. There were no significant between-group differences between the age groups. Most younger and older participants reported that yoga helped improve their sleep quality (92.8 % vs 88.5 %) and they would recommend it to other survivors (98.2 % vs 90.4 %).

DISCUSSION

Older cancer survivors who undergo gentle Hatha and restorative yoga performed two to three times per week for four weeks at a low to moderate level of intensity have similar improvements in CRF and QOL compared to participants aged ≤59. For older survivors experiencing these toxicities, it is reasonable for clinicians to prescribe yoga.

CLINICALTRIALS

govidentifier: NCT00397930.

Lifestyle and integrative oncology interventions for cancer-related fatigue and sleep disturbances

Fatigue, insomnia and sleep disturbances are common after cancer diagnosis, and have a negative impact on quality of life and function. This narrative review synthesised evidence on lifestyle and integrative oncology interventions for cancer-related fatigue, insomnia and sleep disturbances in cancer survivors. There is strong evidence in support of aerobic and strength exercise for the relief of cancer-related fatigue. Yoga, massage therapy, acupuncture, Tai Chi and qigong can also be recommended for cancer-related fatigue. The evidence on yoga, acupuncture and massage therapy for sleep disturbances in cancer is mixed, while exercise appears to have a modest favourable effect. There is insufficient evidence on nutrient supplements or dietary interventions for cancer-related fatigue or insomnia and other sleep disturbances after cancer. Beyond alleviating cancer-related fatigue and insomnia-related symptoms, integrative oncology and lifestyle interventions have potential to effect multiple other benefits, such as improvement in symptoms such as pain and menopausal symptoms. There is a need for well-designed randomised controlled trials of interventions, particularly in the areas of diet and nutrient supplements, and for implementation studies of interventions already supported by evidence.

Exploring the Association between Health-Related Physical Fitness and Quality of Life in Patients with Cancer: A Cross-Sectional Study

Whereas an exercise intervention effectively improves patients' quality of life, little information is available about the contribution of each physical fitness component. This study aims to explore the association between physical fitness components and the quality-of-life domain in patients with cancer. Between September 2021 and August 2023, 160 patients with mixed cancer types visiting the Oncology Unit were selected on a consecutive basis according to selection criteria. They underwent a comprehensive baseline assessment including the six-minute walking test, the handgrip strength test, the isometric leg press test, the back scratch, sit and reach tests, their waist-hip ratio, and their body mass index. The European Organization for Research and Treatment of Cancer Quality of Life and Core Questionnaire was used to measure the quality of life. The sample size was based on the use of regression models to study associations between clinical characteristics and fitness outcomes. All of the analyses were performed using the SPSS v.25 statistical package. Patients had a mean age of 58 years, 68% were female, 42% were affected by breast cancer, and all were receiving anticancer treatments. Higher functional capacity was associated with better global health status (p < 0.0001) and physical (p < 0.0001), role (p < 0.0001), emotional (p = 0.026), and social function (p = 0.016) and inversely linked with fatigue (p = 0.001). Lower-limb flexibility was significantly associated with all of the domains except for role and social functions. The waist-hip ratio was inversely associated with physical function (p < 0.0001) and positively related to fatigue (p = 0.037). Exercise programs aiming to improve the quality of life in cancer should be addressed to optimize these fitness components.

The effect of physical exercise interventions on insomnia: A systematic review and meta-analysis

6-10 % of Europeans suffer from chronic insomnia. They have a higher risk to develop mental and cardiovascular diseases. Treatment of insomnia primarily recommended by the European guideline is cognitive behavioral therapy for insomnia (CBT-I). A quarter of patients treated with CBT-I do not respond sufficiently. The objective of this paper is to examine the influence of exercise interventions on insomnia by conducting a systematic review and meta-analysis. A database search was conducted, including randomized controlled trials (RCT) in which participants had received a diagnosis of insomnia or experienced symptoms thereof. Exercise interventions had to meet the definition of the World Health Organization (WHO), and their implementation was reported according to the FITT (Frequency, Intensity, Time and Type) principle. There was an inactive control and subjective or objective sleep parameters as outcomes. Nineteen studies were included. Results showed a significant improvement for objective (standardized mean difference, SMD = 0.37; confidence interval, CI = [0.17; 0.57]) as well as subjective (SMD = 0.90; CI = [0.61; 1.19]) sleep parameters. Meta-regression showed that the effect increased with intensity of intervention, mean age of participants and percentage of females, but showed high heterogeneity across studies. These results suggest great potential for treating insomnia. Conducting larger trials is advisable to provide precise recommendations.

Prevalence and determinants of sleep problems in cancer survivors compared to a normative population: a PROFILES registry study

PURPOSE

To (1) identify the prevalence of sleep problems in cancer survivors across cancer types and survivorship durations compared to a normative population and (2) determine demographic, clinical, lifestyle, and psychosocial determinants.

METHOD

Cancer survivors diagnosed between 2008 and 2015 (N = 6736) and an age- and sex-matched normative cohort (n = 415) completed the single sleep item of the EORTC QLQ-C30: Have you had trouble sleeping? Participants who responded with "quite a bit"/ "very much" were categorized as poor sleepers. A hierarchical multinomial logistic regression was used to identify determinants of sleep problems.

RESULT

The prevalence of sleep problems was higher in cancer survivors (17%) compared to the normative population (11%) (p < 0.001), varied across cancer types (10-26%) and did not vary based on survivorship duration. The full model showed that survivors who were female (adjusted odds ratio (AOR) 2.26), overweight (AOR 1.50), had one (AOR 1.25) and ≥ 2 comorbidities (AOR 2.15), were former (AOR 1.30) and current (AOR 1.53) smokers and former alcohol drinkers (AOR 1.73), had a higher level of fatigue (AOR 1.05), anxiety (AOR 1.14), depression (AOR 1.11), and cognitive illness perceptions (AOR 1.02), had a higher odds for sleep problems. Higher education compared to lower education (AOR 0.67), having a partner (AOR 0.69), and obesity compared to normal BMI (AOR 0.86) were protective to sleep problems as well as high physical activity before adjusting for psychological factors (AOR 0.91).

CONCLUSION

Modifiable determinants of sleep problems include physical activity, fatigue, anxiety, depression, and illness perception.

IMPLICATIONS FOR CANCER SURVIVORS

Sleep problems after cancer deserve clinical attention. They may be improved by addressing modifiable lifestyle factors: increasing physical activity, stop smoking, and reducing alcohol consumption. As fatigue, depression, and illness perception seem related to sleep problems, lifestyle improvements may also improve these outcomes.

Yoga as a Complementary Therapy for Cancer Patients: From Clinical Observations to Biochemical Mechanisms

BACKGROUND

Integrative oncology combines conventional and complementary, or integrative, therapies for a holistic treatment of cancer patients. Yoga is increasingly used as a complementary therapy for cancer patients, but there is no direct evidence for its effect on cancer pathophysiology like tumor response, or patient outcome like overall survival.

SUMMARY

In this narrative review, we present in detail published studies from randomized clinical trials on complementary yoga therapy for cancer patients, including details about the biochemical mechanisms involved. Medicinal hatha yoga with breathing, postures, meditation, and relaxation enhances the quality of life of cancer patients by providing both psychological and physiological health benefits, highlighting the interconnectedness of mind and body. Yoga therapy reduces stress levels improving heart rate variability, leading to changes in hormonal regulation (e.g., cortisol), reduced oxidative stress, and improved immune function with reduced inflammation. Still, the biochemical effects of yoga on the cancer disease itself are unrevealed.

KEY MESSAGES

More clinical and basic research is needed for further establishment of yoga as complementary therapy in oncology.

Management of Fatigue in Adult Survivors of Cancer: ASCO-Society for Integrative Oncology Guideline Update

PURPOSE

To update the ASCO guideline on the management of cancer-related fatigue (CRF) in adult survivors of cancer.

METHODS

A multidisciplinary panel of medical oncology, geriatric oncology, internal medicine, psychology, psychiatry, exercise oncology, integrative medicine, behavioral oncology, nursing, and advocacy experts was convened. Guideline development involved a systematic literature review of randomized controlled trials (RCTs) published in 2013-2023.

RESULTS

The evidence base consisted of 113 RCTs. Exercise, cognitive behavioral therapy (CBT), and mindfulness-based programs led to improvements in CRF both during and after the completion of cancer treatment. Tai chi, qigong, and American ginseng showed benefits during treatment, whereas yoga, acupressure, and moxibustion helped to manage CRF after completion of treatment. Use of other dietary supplements did not improve CRF during or after cancer treatment. In patients at the end of life, CBT and corticosteroids showed benefits. Certainty and quality of evidence were low to moderate for CRF management interventions.

RECOMMENDATIONS

Clinicians should recommend exercise, CBT, mindfulness-based programs, and tai chi or qigong to reduce the severity of fatigue during cancer treatment. Psychoeducation and American ginseng may be recommended in adults undergoing cancer treatment. For survivors after completion of treatment, clinicians should recommend exercise, CBT, and mindfulness-based programs; in particular, CBT and mindfulness-based programs have shown efficacy for managing moderate to severe fatigue after treatment. Yoga, acupressure, and moxibustion may also be recommended. Patients at the end of life may be offered CBT and corticosteroids. Clinicians should not recommend L-carnitine, antidepressants, wakefulness agents, or routinely recommend psychostimulants to manage symptoms of CRF. There is insufficient evidence to make recommendations for or against other psychosocial, integrative, or pharmacological interventions for the management of fatigue.Additional information is available at www.asco.org/survivorship-guidelines.

Yoga as a Therapeutic Intervention in Cancer Care: An Umbrella Review of Systematic Reviews and Meta-Analyses

The therapeutic efficacy of yoga in cancer care has increasingly attracted attention due to the imperative to address the physical and psychosocial obstacles encountered by cancer patients. Despite previous research presenting conflicting findings on the effectiveness of yoga, there is a need for a comprehensive review to consolidate existing evidence and identify commonalities across studies. An umbrella review was undertaken to aggregate and analyse findings from multiple systematic reviews and meta-analyses on the role of yoga in cancer care. Relevant literature was identified through searches on the Web of Science, Cochrane Library, PubMed, and Scopus databases, using a combination of MeSH (Medical Subject Headings) terms and free-text terms with Boolean operators. The quality of the included reviews was evaluated using the AMSTAR-2 tool to ensure the reliability and validity of the discussed findings. The outcomes revealed a predominance of favourable results associated with yoga interventions, particularly in enhancing psychosocial well-being and the quality of life among cancer patients. Consistent reports indicated significant reductions in symptoms such as anxiety, depression, and stress, as well as enhancements in physical outcomes such as fatigue and sleep quality. However, variations in the efficacy of yoga were observed and were dependent on the type of intervention, patient adherence, and comparative analyses with other forms of exercise. While the benefits were substantial in the short term, they did not uniformly surpass those of other therapeutic exercises in the medium term. Despite yoga demonstrating significant immediate benefits in managing both the physical and psychological symptoms associated with cancer, the variability in its long-term and comparative effectiveness suggests the necessity for personalised approaches. The findings emphasise the importance of considering individual patient needs and treatment contexts when integrating yoga into cancer care protocols. Future research should focus on identifying the optimal conditions under which yoga is most beneficial to tailor interventions for enhanced therapeutic efficacy.

Bibliometric Analysis of Randomized Controlled Trials on Yoga Interventions for Cancer Patients: A Decade in Review

This literature review presents a bibliometric analysis of the randomized controlled trials conducted between 2014 and 2023 on the potential benefits of yoga as a complementary therapy for cancer patients. To conduct this analysis, we searched medical and scientific databases, such as Scopus, Cochrane, and PubMed, using relevant keywords. Our search yielded 58 clinical trials involving 4,762 patients, which indicates a growing trend in this field of research. The studies we reviewed mainly focused on breast cancer patients and demonstrated the adaptability and versatility of yoga, offering a ray of hope and optimism. Among the various styles of yoga, Hatha yoga was the most frequently practiced style in these clinical trials. The analysis we conducted reveals that yoga interventions have a promising role in cancer care and can be a valuable complementary therapy for cancer patients. However, significant gaps and limitations still need to be addressed in this area of research. For instance, more rigorous and diverse investigations are needed to further establish the potential benefits of yoga interventions for cancer patients. Additionally, the standardization of yoga interventions is crucial to optimize therapeutic benefits. By addressing these gaps and limitations, we can further enhance the potential of yoga as a complementary therapy for cancer patients.

Integrating Yoga into Comprehensive Cancer Care: Starting Somewhere

Introduction

The rapid increase in cancer survivors in the United States (US) highlights the importance of survivors' long-term care needs and symptom management. Given evidence that yoga supports cancer related symptoms, our aim was to develop and implement a community yoga program available for cancer survivors, family members, and staff involved in cancer care at a public comprehensive cancer center in the US. Given the wide age range and potential side effects from cancer treatment, we adapted the yoga program to meet the needs of cancer survivors.

Methods

Beginning in May 2017, we offered sixty-minute gentle yoga sessions for all medically cleared cancer survivors and their family members, caregivers, and friends, as well as oncology staff. We aimed to evaluate acceptability, development, and implementation of an adaptive yoga program at our comprehensive cancer center using mixed methods. Classes were initially offered once a week, then increased to twice a week. A total of five service evaluations were sent approximately every six months between April 2018-October 2019 to evaluate participant satisfaction (n=90 responses). Qualitative data were collected and analyzed using thematic analysis of participant satisfaction, allowing us to continuously monitor the yoga program and adjust to meet participants' needs.

Results

Between May 2017 and February 2020, 176 people attended our program. Ages ranged from 21 to 72 years, with an average age of 45 years. Based on these evaluations, 96% (n=86) of participants rated both the program and teachers excellent, and 4% (n=4) rated the program and teachers good. Qualitative themes highlighted positive aspects of the program, including accessibility, inclusivity, and adaptive yoga based on medical needs, skill level, and abilities.

Conclusions

Adaptive yoga programs are well-accepted by cancer survivors and caregivers and may contribute a solution to healthcare staff and physician burnout. It is essential to build a solid foundation of self-care and wellness programming for cancer survivors and to create and foster adaptive yoga classes. Next steps for our program include evaluating yoga within the clinical setting, including chemotherapy infusion center and further research on reduction in stress through yoga in cancer survivors.

Health benefits of yoga for cancer survivors: An updated systematic review and meta-analysis

Objective

To evaluate the effects of yoga on health-related outcomes [i.e., physical function, mental health, and overall quality of life (QOL)] of cancer survivors via a systematic review and meta-analysis of randomized controlled trials (RCTs) over the past 5 years across cancer types.

Methods

An updated systematic review and meta-analysis was conducted in accordance with the Preferred Reporting Items for Systematic Reviews and Meta-Analyses. RCTs published from January 1, 2018, to February 23, 2023, were searched in five English databases (PubMed, The Cochrane Library, ISI, PsycINFO, and CINAHL), three Chinese databases (Wan Fang, China National Knowledge Infrastructure, and Chinese Biomedical Literature Database), and three English clinical trials registry platforms (International Clinical Trials Registry Platform, ClinicalTrials.gov, and EU Clinical Trials Register).

Results

A total of 34 RCTs were included in this updated review. Yoga benefited the physical function, mental health, and overall QOL of cancer survivors. The effect size of yoga for most physical and mental health-related outcomes was relatively small, but that for the QOL was generally large. The impact of yoga on the QOL of cancer survivors ranged from moderate to high.

Conclusions

Yoga has health benefits for cancer survivors and could therefore be used as an optional supportive intervention for cancer-related symptom management.

Metabolic underpinnings of cancer-related fatigue

Cancer-related fatigue (CRF) is one of the most prevalent and detrimental complications of cancer. Emerging evidence suggests that obesity and insulin resistance are associated with CRF occurrence and severity in cancer patients and survivors. In this narrative review, we analyzed recent studies including both preclinical and clinical research on the relationship between obesity and/or insulin resistance and CRF. We also describe potential mechanisms for these relationships, though with the caveat that because the mechanisms underlying CRF are incompletely understood, the mechanisms mediating the association between obesity/insulin resistance and CRF are similarly incompletely delineated. The data suggest that, in addition to their effects to worsen CRF by directly promoting tumor growth and metastasis, obesity and insulin resistance may also contribute to CRF by inducing chronic inflammation, neuroendocrinological disturbance, and metabolic alterations. Furthermore, studies suggest that patients with obesity and insulin resistance experience more cancer-induced pain and are at more risk of emotional and behavioral disruptions correlated with CRF. However, other studies implied a potentially paradoxical impact of obesity and insulin resistance to reduce CRF symptoms. Despite the need for further investigation utilizing interventions to directly elucidate the mechanisms of cancer-related fatigue, current evidence demonstrates a correlation between obesity and/or insulin resistance and CRF, and suggests potential therapeutics for CRF by targeting obesity and/or obesity-related mediators.

Gender differences in the predictors of quality of life in patients with cancer: A cross sectional study

PURPOSE

The aim of the present study was to explore potential differences in the sociodemographic (with a special focus on gender differences) and psychological predictors of quality of life in individuals diagnosed with cancer.

METHODS

A cross-sectional, observational study was carried out involving individuals struggling with different forms of cancer (N = 430). Linear regression was used to investigate the concurrent predictive role of the independent variables, stratified by gender, for each of the five cancer-specific quality of life domains and overall quality of life.

RESULTS

Sociodemographic characteristics had only a negligible to small role in predicting quality of life in both men and women. In contrast, the psychological variables explained a significantly larger portion of the variance in both genders. There were no statistically significant gender differences regarding the raw quality of life domain scores; however, their predictors were markedly different in the two groups.

CONCLUSION

The results of the present study indicate that it is imperative to take gender differences into consideration when planning psychosocial interventions also focusing on strengths, resources, and coping strategies. Considering the consistently emerging importance of family support in patients' quality of life, offering psychological interventions to caregivers/family members seems warranted to empower them to provide support to patients throughout the illness trajectory.

Radiotherapy-induced fatigue in Palestinian breast cancer survivors

Background

No study has investigated the cancer-related fatigue (CRF) among Palestinian breast cancer survivors. Our purpose is to assess, compare, and correlate CRF in breast cancer survivors undergoing radiotherapy (RT) with study variables.

Methods

CRF in breast cancer survivors was assessed using Functional Assessment of Chronic Illness Therapy - Fatigue Scale (FACIT-F) (version 4). The sample consisted of 148 breast cancer survivors undergoing RT. Data was collected between 1 May 2021 and 1 September 2021. The means and standard deviations of the questionnaire using one-way ANOVA, and Pearson correlation coefficient were reported.

Results

Respondents ages ranged from 20 to >65 years old and was divided into four groups: (20-35, 36-50, 51-65, and >65 years, respectively). The total fatigue mean was 2.88 and the SD was 0.84, indicating an intermediate fatigue level among breast cancer survivors. Study survivors with higher education were more likely to be fatigued (F =7.68, P-value =0.001). Divorced survivors were more prone to fatigue compared to married survivors (F =5.83, P-value= 0.001). Finally, survivors who do not have children were more vulnerable to exhaustion compared to those with children (F =7.35, P-value =0.001). Also, younger survivors were more prone to fatigue, compared to older survivors (F =5.29, P-value = 0.002). Results also showed a positive relationship between each of the variables; the number of children (R =0.221, P-value =0.007), age (R =0.311, P-value =0.000), and duration of treatment (R =0.290, P-value =0.000), which means that the greater the number of children, the younger the age, or the longer the duration of treatment, the more fatigue is reported in breast cancer survivors.

Conclusions

Fatigue is frequently observed in breast cancer survivors undergoing RT. It can limit RT treatment continuity. Therefore, early detection of fatigue can help survivors adhere to RT treatment and achieve better clinical results.

Dichloroacetate as a novel pharmaceutical treatment for cancer-related fatigue in melanoma

Cancer-related fatigue (CRF) is one of the most common complications in patients with multiple cancer types and severely affects patients' quality of life. However, there have only been single symptom-relieving adjuvant therapies but no effective pharmaceutical treatment for the CRF syndrome. Dichloroacetate (DCA), a small molecule inhibitor of pyruvate dehydrogenase kinase, has been tested as a potential therapy to slow tumor growth, based largely on its effects in vitro to halt cell division. We found that although DCA did not affect rates of tumor growth or the efficacy of standard cancer treatment (immunotherapy and chemotherapy) in two murine cancer models, DCA preserved physical function in mice with late-stage tumors by reducing circulating lactate concentrations. In vivo liquid chromatography-mass spectrometry/mass spectrometry studies suggest that DCA treatment may preserve membrane potential, postpone proteolysis, and relieve oxidative stress in muscles of tumor-bearing mice. In all, this study provides evidence for DCA as a novel pharmaceutical treatment to maintain physical function and motivation in murine models of CRF.NEW & NOTEWORTHY We identify a new metabolic target for cancer-related fatigue, dichloroacetate (DCA). They demonstrate that in mice, DCA preserves physical function and protects against the detrimental effects of cancer treatment by reducing cancer-induced increases in circulating lactate. As DCA is already FDA approved for another indication, these results could be rapidly translated to clinical trials for this condition for which no pharmaceutical therapies exist beyond symptom management.

Chronic stress-induced immune dysregulation in breast cancer: Implications of psychosocial factors

Chronic stress refers to continuous emotional changes and psychological pressure that individuals experience when they are unable to adjust and stabilize the internal environment over an extended period. It can increase the pressure on endocrine mediators and cytokines in the circulation, as well as tissues throughout the hypothalamic-pituitary-adrenaline (HPA) axis and sympathetic nervous system (SNS); thus, evolving the internal environment of the tumor. This review assesses several key issues, involving psychosocial factors, and integrates clinical, cellular, and molecular studies-as well as the latest research progress-to provide a mechanistic understanding regarding breast oncopsychology. We propose that chronic stress contributes to large individual diferences in the prognosis of breast cancer survivors because they change the basic physiological processes of the endocrine and immune systems, which in turn regulate tumor growth. The study of psychological and physiological reactions of breast cancer patients suggests a new idea for psychological intervention and clinical treatment for breast cancer patients.

Complementary and integrative health therapies in whole person resilience research

Complementary and integrative health approaches can improve health and well-being, as well as play an important role in disease prevention. The concept of whole person health builds on these concepts by empowering individuals, families, communities, and populations to improve their health in multiple interconnected domains: biological, behavioural, social, and environmental. Research on whole person health involves studies of interconnected biological systems and complex approaches to prevention and treatment. Some of these approaches may involve methods of diagnosis and therapy that differ from those used in conventional Western medicine. Of growing interest is how complementary, integrative, and whole person health approaches contribute to resilience. This brief commentary describes an integrated framework for mapping the connections between various complementary and integrative health therapeutic inputs onto aspects of resilience, including the ability to resist, recover (partially or fully), adapt, and/or grow in response to a following a stressor. The authors present selected examples of research studies supported by the National Institutes of Health that test whether complementary and integrative health approaches can promote some aspect of resilience. We conclude with a discussion of the challenges and opportunities in incorporating the study of resilience in complementary, integrative, and whole person health research.

Effects of exercise interventions on cancer-related fatigue and quality of life among cancer patients: a meta-analysis

PURPOSE

In this study, exercise interventions were evaluated for their effects on cancer-related fatigue (CRF) and quality of life (QoL) among cancer patients.

DESIGN

A meta-analysis was performed.

METHODS

We systematically searched the PubMed/Medline, Web of Science, Embase, Cochrane Central Register of Controlled Trials (CENTRAL), PsycINFO, and CINAHL databases, and gray literature sources including the Virginia Henderson International Nursing Library and Google Scholar. This study only included randomized controlled trials (RCTs) examining how exercise interventions affect CRF and QoL among cancer patients. Based on the Cochrane Risk-of-Bias Assessment Tool, version 2 (RoB 2) and the Grading of Recommendations Assessment, Development and Evaluation (GRADE) approach, the methodological quality of the included studies was evaluated. In addition, standardized mean differences (SMDs) and 95% confidence intervals (CIs) were applied to assess the intervention effect with respect to CRF and QoL. Data analysis was performed using Review Manager (version 5.4).

RESULTS

There were a total of 1573 participants in the 28 included articles. According to the meta-analysis, CRF (SMD = -0.35, 95% CI: -0.63 to -0.07, p = 0.01) and QoL (SMD = 0.36, 95% CI: 0.20 to 0.53, p < 0.01) were positively affected by exercise interventions. Subgroup analyses revealed considerable improvements in CRF (SMD = -0.54, 95% CI: -1.00 to -0.09, p = 0.02) and QoL (SMD = 0.38, 95% CI: 0.16 to 0.59, p < 0.01) from aerobic exercise. An intervention duration less than 12 weeks had a better effect on CRF (SMD = -0.80, 95% CI: -1.43 to -0.17, p = 0.01) and QoL (SMD = 0.53, 95% CI: 0.21 to 0.85, p < 0.01), and three times per week was the most effective frequency in improving QoL (SMD = 0.69, 95% CI: 0.28 to 1.11, p < 0.01). Exercise intervention was more successful in improving CRF (SMD = -0.66, 95% CI: -1.10 to -0.21, p < 0.01) and QoL (SMD=-0.50, 95% CI: 0.23 to 0.78, p < 0.01) in female cancer patients. Sensitivity analyses showed that the pooled outcomes were reliable and stable.

CONCLUSION

Exercise interventions are a workable approach to improve CRF and QoL among cancer patients. An aerobic exercise intervention of less than 12 weeks might be most effective in improving CRF and QoL, and three times per week might be the most appropriate frequency. Exercise might have a more positive effect on improving CRF and QoL in female cancer patients. Additionally, a larger number of high-quality RCTs should be conducted to further confirm the efficacy of exercise interventions on CRF and QoL among cancer patients.

REGISTRATION NUMBER

CRD42022351137.

Which Exercise Approaches Work for Relieving Cancer-Related Fatigue? A Network Meta-analysis

OBJECTIVE: To determine the most effective exercise modalities for managing cancer-related fatigue during and after cancer treatment. DESIGN: Network meta-analysis (NMA) of randomized controlled trials. LITERATURE SEARCH: Seven electronic databases were systematically searched from inception to January 2022. STUDY SELECTION CRITERIA: Randomized controlled trials testing the effects of exercise on relieving cancer-related fatigue in adult patients with cancer. DATA SYNTHESIS: An NMA of 56 studies was conducted, and the PRISMA-NMA guidelines were followed when reporting results. To determine the most effective interventions, the surface under the cumulative ranking curve (SUCRA) value was calculated for each exercise modality. RESULTS: Combined aerobic and resistance exercise (standardized mean difference [SMD], 1.57; credible interval [CrI], 1.03-2.10), yoga (SMD, 1.02; CrI: 0.44, 1.60), and regular physical activity (SMD, 1.07; CrI: 0.21, 1.92) could significantly alleviate cancer-related fatigue compared to control groups (usual care, wait-list, and regular physical activity). Combined aerobic and resistance exercise (SUCRA, 97.2%) had the highest probability of efficacy, followed by yoga (SUCRA, 75.5%) and regular physical activity (SUCRA, 74.1%). During cancer treatment, combined aerobic and resistance exercise (SUCRA, 94.5%) ranked first in efficacy, followed by regular physical activity (SUCRA, 82.1%) and yoga (SUCRA, 73.8%). After cancer treatment, only combined aerobic and resistance exercise (SMD, 0.99; CrI: 0.13, 1.84) had a significant effect on cancer-related fatigue. CONCLUSION: Combined aerobic and resistance exercise, yoga, and regular physical activity were the most effective exercise modalities for alleviating cancer-related fatigue. Combined aerobic and resistance exercise is recommended during and after cancer treatment. J Orthop Sports Phys Ther 2023;53(6):1-10. Epub: 23 March 2023. doi:10.2519/jospt.2023.11251.

Effects of Brain Wave Vibration Training on the Pain and Fatigue Disturbance Symptom Cluster in Persons with Cancer: A Randomized Controlled Trial

Pain and fatigue disturbance constitute the most common symptom cluster in persons with cancer, causing physical and psychological problems associated with a decreased quality of life. This study investigated the effects of brain wave vibration (BWV) training on the pain and fatigue disturbance symptom cluster in persons with cancer. A total of 43 participants were voluntarily recruited and randomly assigned to the experimental group (BWV with therapeutic massage, n = 25) or the control group (conventional physical therapy with spontaneous physical activity, n = 18) (Randomized controlled trial registration number: KCT0005843). BWV with therapeutic massage was performed for a total of 24 sessions (70 min/day, 2 days/week for 12 weeks). The Breakthrough Pain Assessment Tool and Brief Fatigue Inventory were used to evaluate cancer-related pain (CRP) and cancer-related fatigue (CRF), respectively. Regarding CRP variables, the experimental group demonstrated significant improvements in the worst and typical episodes of breakthrough pain, pain distress, and interference with living a normal life compared to the control group. In CRF, there was no significant difference between the groups, although BWV training with therapeutic massage resulted in a significant difference between before and after the intervention. Therefore, our study suggests that BWV training with therapeutic massage is beneficial for improving CRP and CRF in cancer survivors.

Effectiveness of exercise interventions in the management of cancer-related fatigue: a systematic review of systematic reviews

BACKGROUND

Cancer-related fatigue is a widely prevalent global public health concern with serious consequences. Increasing evidence suggests the effectiveness of exercise intervention in treating cancer-related fatigue, but there is a lack of a summary of relevant literature on the same to help reach a clear consensus.

OBJECTIVE

To summarize evidence regarding the efficacy of exercise interventions to reduce cancer fatigue, as determined in systematic reviews (SRs) and/or meta-analyses (MAs).

METHOD

From inception to September 2022, PubMed (1948-2022), Embase (1974-2022), Cochrane Library (1993-2022), CINAHL (1937-2022), Web of Science (1997-2022), China Knowledge Resource Integrated Database (1999-2022), Wanfang Database (1993-2022), and Chinese Biomedical Database (1994-2022) were searched for inclusion to the study. Two reviewers independently extracted the data from the included articles. AMSTAR II was to evaluate the methodological quality of the reviews.

RESULTS

A total of 46 systematic reviews were assessed for data on exercise intervention in reducing cancer-related fatigue among cancer patients. In addition, some studies have reported adverse events during the exercise intervention period. The quality of the included systematic review was found to be low or critically low.

CONCLUSIONS

The present systematic review of systematic reviews supports exercise intervention for reducing cancer-related fatigue. Further higher-quality studies are warranted to improve the level of evidence for exercise interventions for application in the treatment of cancer-related fatigue.

Effect of Yoga and Mediational Influence of Fatigue on Walking, Physical Activity, and Quality of Life Among Cancer Survivors

BACKGROUND

Cancer-related fatigue (CRF) negatively affects survivors' walking, engagement in physical activity (PA), and quality of life (QoL). Yoga is an effective therapy for treating CRF; however, evidence from large clinical trials regarding how reducing CRF through yoga influences CRF's interference with survivors' walking, engagement in PA, and QoL is not available. We examined the effects of yoga and the mediational influence of CRF on CRF's interference with walking, PA, and QoL among cancer survivors in a multicenter phase III randomized controlled trial.

PATIENTS AND METHODS

Cancer survivors (n=410) with insomnia 2 to 24 months posttreatment were randomized to a 4-week yoga intervention-Yoga for Cancer Survivors (YOCAS)-or standard care. A symptom inventory was used to assess how much CRF interfered with survivors' walking, PA, and QoL. The Multidimensional Fatigue Symptom Inventory-Short Form was used to assess CRF. Two-tailed t tests and analyses of covariance were used to examine within-group and between-group differences. Path analysis was used to evaluate mediational relationships between CRF and changes in CRF's interference with walking, PA, and QoL among survivors.

RESULTS

Compared with standard care controls, YOCAS participants reported significant improvements in CRF's interference with walking, PA, and QoL at postintervention (all effect size = -0.33; all P≤.05). Improvements in CRF resulting from yoga accounted for significant proportions of the improvements in walking (44%), PA (53%), and QoL (45%; all P≤.05).

CONCLUSIONS

A significant proportion (44%-53%) of the YOCAS effect on CRF's interference with walking, PA, and QoL was due to improvements in CRF among cancer survivors. Yoga should be introduced and included as a treatment option for survivors experiencing fatigue. By reducing fatigue, survivors further improve their walking, engagement in PA, and QoL.

Coping Skills Interventions for Fatigue in Adults with Hematologic Malignancies: A Systematic Review

Background: Persons with hematologic malignancies have a high symptom burden throughout the illness journey. Coping skills interventions effectively reduce fatigue for other cancer patients. The purpose of this systematic review is to identify if coping interventions can reduce fatigue in patients with hematologic malignancies. Methods: A search of PubMed, Embase, CINAHL, APA Psych INFO, Scopus, Cochrane, and non-traditional publications was performed in June 2021 for studies introducing coping interventions for adults with hematological cancers within the past 20 years. The Transactional Model of Stress and Coping was used as a framework with fatigue as the primary outcome. The Johns Hopkins Nursing Evidence Based Practice Appraisal tool was used for quality appraisal. Results: Twelve interventional studies met criteria for inclusion. Four studies significantly reduced fatigue, with an additional 3 showing a reduction in fatigue. Interventions that utilized both problem and emotion-focused coping were more effective at reducing fatigue compared to interventions that only used emotion or problem-focused coping. Conclusion: This systematic review found moderate-strength evidence to support that coping interventions can reduce fatigue, with mixed, but mostly beneficial results. Clinicians caring for patients with hematologic malignancies should consider using coping interventions to reduce fatigue.

Effects of dyadic-based physical activity intervention on cancer-related fatigue among cancer survivors: A scoping review

Objective

Cancer-related fatigue is one of the most common adverse reactions to cancer survivors, which has a significant impact on the daily life. As a traumatic event, cancer not only brings great physical and mental harm to patients, but also poses a threat to the physical and psychological health of caregivers. Current studies have shown that physical activity improves cancer-related fatigue in cancer survivors. And studies have suggested that dyadic interventions are more effective in improving patient outcomes and may also provide some benefits to caregivers. But the literature on the effects of dyadic-based physical activity on improving cancer-related fatigue has not been synthesized. This scoping review described the scope and impact of studies on cancer-related fatigue with dyadic-based physical activity interventions.

Methods

Six databases which is PubMed, Cochrane Library, Web of Science, Embase, CINAHL and Medline were searched for all studies of dyadic-based physical activity interventions with outcome measures including cancer-related fatigue published since the inception of the databases through May 2022. The search strategy was developed based on PICO principles.

Results

This article includes 6 pre and post-test designs and 2 randomized controlled trial design. The majority of participants were survivors with breast and lung cancer. The overall results showed that the effectiveness of dyadic-based physical activity interventions in improving cancer-related fatigue was unsatisfactory.

Conclusions

This scoping review suggests that current dyadic-based physical activity interventions are not well-researched among cancer survivors. In the future, more high-quality studies with more sophisticated and rigorous interventions are needed.

Therapeutic yoga reduces pro-tumorigenic cytokines in cancer survivors

INTRODUCTION

Chronic inflammation can remain many years after the completion of cancer treatment and is associated with cancer recurrence. The purpose of this study was to examine how a 16-week therapeutic yoga program (TYP) modulates the cytokine profile in heterogeneous cancer survivors.

METHODS

Eligible participants were 18 years of age or older and clinically diagnosed with cancer. Consenting participants were asked to attend three, 75-min sessions weekly of TYP with meditation. Seventeen patients provided blood samples at baseline and end of study. Eight cytokines (interferon (IFN)-γ; interleukin (IL)-1b, IL-1ra, IL-4, IL-6, IL-8, IL-10; and tumor necrosis factor (TNF)-α), three receptors (sIL-6R, sTNFRI, sTNFRII), and C-reactive protein (CRP) were quantified.

RESULTS

Patients were 59.6 ± 7.3 years old; over half (56%) were overweight or obese BMI ≥ 25 kg/m2); majority were female (71%) and breast cancer survivors (65%), of which 44% were Hispanic. Marked reductions were observed in all cytokines except IL-4, with significant reductions (p < 0.05) found in IL-1b (- 13%) and IL-1ra (- 13%). No significant changes were observed in soluble cytokine receptors or CRP.

CONCLUSIONS

TYP led to significant reduction in circulating cytokines associated with chronic inflammation in a heterogeneous sample of cancer survivors.

Effects of exercise interventions on cancer-related fatigue in breast cancer patients: an overview of systematic reviews

OBJECTIVE

This overview of systematic reviews aims to critically appraise and consolidate evidence from current systematic reviews (SRs)/meta-analyses on the effects of exercise interventions on cancer-related fatigue (CRF) in breast cancer patients.

METHODS

SRs/meta-analyses that explored the effects of exercise interventions on CRF in breast cancer patients compared with the routine methods of treatment and care were retrieved from nine databases. The methodological quality of the included SRs was appraised using A MeaSurement Tool to Assess systematic Reviews II (AMSTAR II). The Grading of Recommendations Assessment, Development and Evaluation (GRADE) was used to calculate the grading of outcomes in the included SRs. The exercise type, frequency, duration, and inclusion/absence of supervision were further evaluated with subgroup analyses. The Stata 16.0 software was utilized for data analysis.

RESULTS

Twenty-nine reviews were included. The overall methodological quality and level of evidence of the included reviews were unsatisfactory, with only three reviews rated as high methodological quality and no review identified as high-quality evidence. Moderate certainty evidence indicated that exercise could improve fatigue in breast cancer patients (SMD = - 0.40 [95%CI - 0.58, - 0.22]; P = 0.0001). Subgroup analysis based on the types of exercise showed that yoga (SMD = - 0.30 [95%CI - 0.56, - 0.05]; I2 = 28.7%) and aerobic exercise (SMD = - 0.29 [95%CI - 0.56, - 0.02]; I2 = 16%) had a significantly better effect on CRF in breast cancer patients; exercising for over 6 months (SMD = - 0.88 [95%CI - 1.59, - 0.17]; I2 = 42.7%; P = 0.0001), three times per week (SMD = - 0.77 [95%CI - 1.04, - 0.05]; I2 = 0%; P = 0.0001), and for 30 to 60 min per session (SMD = - 0.81 [95%CI - 1.15, - 0.47]; I2 = 42.3%; P = 0.0001) can contribute to a moderate improvement of CRF. Supervised exercise (SMD = - 0.48 [95%CI - 0.77, - 0.18]; I2 = 87%; P = 0.001) was shown to relieve CRF.

CONCLUSION

Exercise played a favorable role in alleviating CRF in breast cancer. Yoga was recommended as a promising exercise modality for CRF management in the majority of the included studies. Exercising for at least three times per week with 30 to 60 min per session could be recommended as a suitable dosage for achieving improvement in CRF. Supervised exercise was found to be more effective in alleviating CRF than unsupervised exercise. More rigorously designed clinical studies are needed to specify the exact exercise type, duration, frequency, and intensity to have an optimal effect on CRF in breast cancer patients.

TRIAL REGISTRATION

ClinicalTrials.gov Identifier: CRD42020219866.

Stress and cancer: The mechanisms of immune dysregulation and management

Advances in the understanding of psychoneuroimmunology in the past decade have emphasized the notion that stress and cancer are interlinked closely. Durable chronic stress accelerated tumorigenesis and progression, which is unfavorable for clinical outcomes of cancer patients. Available evidence has provided unprecedented knowledge about the role and mechanisms of chronic stress in carcinogenesis, the most well-known one is dysfunction of the hypothalamus-pituitary-adrenal (HPA) axis and the sympathetic nervous system (SNS). With abnormal activation of neuroendocrine system, stress-related hormones contribute to increased oncogenes expression, exacerbated chronic inflammation and impaired immunologic function. In addition, accumulating studies have demonstrated that diverse stress interventions including pharmacological approaches, physical exercises and psychological relaxation have been administered to assist in mental disorders reduction and life quality improvement in cancer patients. In this review, we systematically summarize the connection and mechanisms in the stress-immune-cancer axis identified by animal and clinical studies, as well as conclude the effectiveness and deficiencies of existing stress management strategies.

Managing cancer and living meaningfully (CALM) as an intervention for severe fatigue in gastrointestinal cancer survivors

This study aimed to evaluate the effectiveness and feasibility of CALM (managing cancer and living meaningfully), which is a psychotherapeutic intervention used to reduce cancer-related fatigue (CRF) and improve quality of life (QOL) in Chinese gastrointestinal cancer survivors (GCs). A total of 115 GCs were enrolled in this study. All patients were randomly assigned to either the CALM group or the usual care (UC) group. All patients were evaluated using the Piper Fatigue Scale (PFS) and Quality of Life Assessment Scale before and after 2, 4, and 6 CALM or UC sessions with GCs presenting with severe fatigue. We compared the differences in these scores between the CALM group and the UC group and analyzed the correlations between CRF and QOL scores. Compared with the UC group, the CALM group showed significant differences in total CRF, behavioral/daily life CRF, emotional/affective CRF, sensory/physical CRF, cognitive CRF and QOL scores before and after 2, 4, and 6 CALM sessions (F=3106.434, F=1113.831, F=1159.919, F=1502.266, F=820.275, F=606.513, respectively; P<0.001). Finally, negative correlations were found between CRF and QOL scores in the GCs in the CALM group (before treatment: r=-0.46, P=0.0002; after 2 sessions: r=-0.46, P=0.0002; after 4 sessions: r=-0.51, P<0.0001; after 6 sessions: r =-0.44, P=0.0004). The CALM intervention effectively reduced fatigue in cancer patients and improved their QOL. This study suggests that CALM as a psychotherapeutic intervention may be an effective way to reduce CRF.

Molecular relation between biological stress and carcinogenesis

This paper aims to overview different types of stress, including DNA replication stress, oxidative stress, and psychological stress. Understanding the processes that constitute a cellular response to varied types of stress lets us find differences in how normal cells and cancer cells react to the appearance of a particular kind of stressor. The revealed dissimilarities are the key for targeting new molecules and signaling pathways in anticancer treatment. For this reason, molecular mechanisms that underlay DNA replication stress, oxidative stress, and psychological stress have been studied and briefly presented to indicate biochemical points that make stressors contribute to cancer development. What is more, the viewpoint in which cancer constitutes the outcome and the cause of stress has been taken into consideration. In a described way, this paper draws attention to the problem of cancer-related post-traumatic stress disorder and proposes a novel, multidimensional oncological approach, connecting anticancer treatment with psychiatric support.

Can improving quality of sleep reduce the symptoms of cancer-related fatigue in adults?: A systematic review

Purpose

Cancer‐related fatigue (CRF) results in reduced quality of life for cancer patients. The relationship between tiredness and fatigue has been established in cancer patients and has been shown to be reciprocal, meaning the relationship is somewhat ‘chicken or the egg’ with tiredness influencing fatigue and vice versa. The aim of this study is to determine whether an improvement in sleep quality can ease the symptoms of CRF and whether this can support the theory that CRF symptoms stem from the effect of tiredness.

Method

Three databases were searched producing 259 papers. The papers were filtered using several inclusion criteria, resulting in a final list of 20 papers for analysis. The remaining papers (20) were critically appraised using the Critical Appraisals Skills Programme (CASP) randomised control trial checklist and assessed for bias using the Cochrane Collaboration's tool for assessing risk of bias in randomised trials.

Results

Fourteen papers showed an increase in sleep quality that also resulted in an improvement in fatigue symptoms. Cognitive behavioural therapy was shown to be the most effective intervention with a statistically significant decrease in fatigue alongside significant improvement in sleep quality shown in six of the papers (p < 0.05). Sleep education also had a positive impact on both sleep and fatigue scores with three papers showing significant improvements. Three papers focusing on exercise interventions produced a significant improvement in fatigue symptoms and quality of sleep.

Conclusion

Improving quality of sleep does ease the symptoms of CRF; however, the ‘chicken or the egg’ question regarding CRF and tiredness cannot be answered at this stage.

Meta-Analysis of Randomized Controlled Trials on Yoga, Psychosocial, and Mindfulness-Based Interventions for Cancer-Related Fatigue: What Intervention Characteristics Are Related to Higher Efficacy?

Simple Summary

Many individuals with cancer suffer from persistent exhaustion due to cancer therapy, known as cancer-related fatigue (CRF). Yoga, psychosocial, and mindfulness-based interventions are recommended to reduce CRF. However, it is not clear yet how interventions need to be designed to maximize their efficacy. This meta-analysis aimed to identify intervention characteristics associated with greater reductions in CRF. A total of 70 interventions with 6387 participants were included in the analysis. Our results found a positive effect of yoga, psychosocial, and mindfulness-based interventions, while all invention types revealed large differences in intervention effects. In psychosocial interventions, using a group setting and working on cognition was related to higher efficacy. Regarding yoga and mindfulness-based interventions, no specific intervention characteristics emerged as more favorable than others. Overall, this meta-analysis suggests opportunities to optimize psychosocial interventions for CRF, whereas the design of yoga and mindfulness-based interventions seems to allow for variation.

Abstract

Cancer-related fatigue (CRF) is a burdensome sequela of cancer treatments. Besides exercise, recommended therapies for CRF include yoga, psychosocial, and mindfulness-based interventions. However, interventions conducted vary widely, and not all show a significant effect. This meta-analysis aimed to explore intervention characteristics related to greater reductions in CRF. We included randomized controlled trials published before October 2021. Standardized mean differences were used to assess intervention efficacy for CRF and multimodel inference to explore intervention characteristics associated with higher efficacy. For the meta-analysis, we included 70 interventions (24 yoga interventions, 31 psychosocial interventions, and 15 mindfulness-based interventions) with 6387 participants. The results showed a significant effect of yoga, psychosocial, and mindfulness-based interventions on CRF but with high heterogeneity between studies. For yoga and mindfulness-based interventions, no particular intervention characteristic was identified to be advantageous for reducing CRF. Regarding psychosocial interventions, a group setting and work on cognition were related to higher intervention effects on CRF. The results of this meta-analysis suggest options to maximize the intervention effects of psychosocial interventions for CRF. The effects of yoga and mindfulness-based interventions for CRF appear to be independent of their design, although the limited number of studies points to the need for further research.

Mechanisms, Mediators, and Moderators of the Effects of Exercise on Chemotherapy-Induced Peripheral Neuropathy

Chemotherapy-induced peripheral neuropathy (CIPN) is an adverse effect of neurotoxic antineoplastic agents commonly used to treat cancer. Patients with CIPN experience debilitating signs and symptoms, such as combinations of tingling, numbness, pain, and cramping in the hands and feet that inhibit their daily function. Among the limited prevention and treatment options for CIPN, exercise has emerged as a promising new intervention that has been investigated in approximately two dozen clinical trials to date. As additional studies test and suggest the efficacy of exercise in treating CIPN, it is becoming more critical to develop mechanistic understanding of the effects of exercise in order to tailor it to best treat CIPN symptoms and identify who will benefit most. To address the current lack of clarity around the effect of exercise on CIPN, we reviewed the key potential mechanisms (e.g., neurophysiological and psychosocial factors), mediators (e.g., anti-inflammatory cytokines, self-efficacy, and social support), and moderators (e.g., age, sex, body mass index, physical fitness, exercise dose, exercise adherence, and timing of exercise) that may illuminate the relationship between exercise and CIPN improvement. Our review is based on the studies that tested the use of exercise for patients with CIPN, patients with other types of neuropathies, and healthy adults. The discussion presented herein may be used to (1) guide oncologists in predicting which symptoms are best targeted by specific exercise programs, (2) enable clinicians to tailor exercise prescriptions to patients based on specific characteristics, and (3) inform future research and biomarkers on the relationship between exercise and CIPN.

Is Yoga Associated With Improved Sleep Amongst Breast Cancer Survivors?

Background

Breast cancer survivors may experience sleep disturbances that can affect their physical and mental well-being. We sought to determine the association, if any, between yoga and sleep among breast cancer survivors in a population-based cohort.

Methods

The National Health Interview Survey is designed to be representative of the US civilian non-institutionalized population. We evaluated breast cancer survivors in the 2017 cohort to determine the association between yoga and self-reported quality of sleep.

Results

Of the 25,905 people surveyed, representing 238,738,039 in the population, 1.59% reported a previous history of breast cancer. Breast cancer survivors were less likely to report having practiced yoga in the preceding 12 months, compared to those without a history of breast cancer (9.98% vs 13.78%, P = .011). In addition, they were more likely to report having had trouble falling asleep (44.64% vs 36.32%, P = .002), staying asleep (53.72% vs 39.43%, P < .001), and using sleep medication on at least 1 day within the previous week (23.80% vs 13.49%, P < .001) than those without breast cancer. Among breast cancer survivors, there were no significant differences in difficulty falling asleep (39.16% vs 44.98%, P = .482), difficulty staying asleep (61.17% vs 52.70%, P = .305), and needing sleep medication (19.03% vs 24.53%, P = .395) between those who practiced yoga and those who did not. Controlling for sociodemographic factors, there remained no association between yoga and difficulty falling or staying asleep among breast cancer survivors.

Conclusion

There is no direct association between yoga and sleep quality in breast cancer survivors.

Sleep Quality and Cancer-Related Fatigue in Patients with Cancer

Introduction: Sleep problems and fatigue are common symptoms reported by cancer patients. In this study, the researchers used a specialized tool to measure fatigue in cancer patients and its relationship with sleep quality in Yazd, Iran.

Methods: This descriptive correlational study included 149 cancer patients (age range: over 18 years) referred to Shahid Sadoughi Hospital in Yazd, Iran. Data were collected by the Pittsburgh Sleep Quality Index (PSQI) and Cancer-Related Fatigue Questionnaire. A PSQI score of ≥5 indicated a poor sleep. Data were analyzed using SPSS Statistics for Windows, version 13.0 (SPSS Inc., Chicago, IL, USA), Pearson’s correlation, t test, analysis of variance (ANOVA), and linear regression.

Results: The mean (SD) PSQI score of patients was 13 (4.85) out of 21. About 69.3% of patients had a poor sleep quality. While the mean (SD) of sleep duration was 5.57 (0.54) hours, it was 69.44 (46.58) minutes for sleep latency. Also, with increasing the mean of sleep quality, the mean of fatigue significantly increased (P < 0.001, R=0.63).

Conclusion: According to the results, there was a relationship between the sleep quality and fatigue in cancer patients, so that patients with better sleep quality had less fatigue.

Effects of yoga in men with prostate cancer on quality of life and immune response: a pilot randomized controlled trial

Background

Diagnosis and treatment of prostate cancer is associated with anxiety, fear, and depression in up to one-third of men. Yoga improves health-related quality of life (QoL) in patients with several types of cancer, but evidence of its efficacy in enhancing QoL is lacking in prostate cancer.

Methods

In this randomized controlled study, 29 men newly diagnosed with localized prostate cancer were randomized to yoga for 6 weeks (n = 14) or standard-of-care (n = 15) before radical prostatectomy. The primary outcome was self-reported QoL, assessed by the Expanded Prostate Index Composite (EPIC), Functional Assessment of Cancer Therapy-Prostate (FACT-P), Functional Assessment of Chronic Illness Therapy-Fatigue (FACIT–F), Functional Assessment of Cancer Therapy-General (FACT-G) at baseline, preoperatively, and 6 weeks postoperatively. Secondary outcomes were changes in immune cell status and cytokine levels with yoga.

Results

The greatest benefit of yoga on QoL was seen in EPIC-sexual (mean difference, 8.5 points), FACIT-F (6.3 points), FACT-Functional wellbeing (8.6 points), FACT-physical wellbeing (5.5 points), and FACT-Social wellbeing (14.6 points). The yoga group showed increased numbers of circulating CD4+ and CD8+ T-cells, more production of interferon-gamma by natural killer cells, and increased Fc receptor III expression in natural killer cells. The yoga group also showed decreased numbers of regulatory T-cells, myeloid-derived suppressor cells, indicating antitumor activity, and reduction in inflammatory cytokine levels (granulocyte colony-stimulating factor [0.55 (0.05–1.05), p = 0.03], monocyte chemoattractant protein [0.22 (0.01–0.43), p = 0.04], and FMS-like tyrosine kinase-3 ligand [0.91 (−0.01, 1.82), p = 0.053].

Conclusions

Perioperative yoga exercise improved QoL, promoted an immune response, and attenuated inflammation in men with prostate cancer. Yoga is feasible in this setting and has benefits that require further investigation.

Trial registration

clinicaltrials.org (NCT02620033).

Circadian characteristics of the rest-activity rhythm, executive function, and glucose fluctuations in young adults with type 1 diabetes

Circadian alignment is an important element in individual health, and one behavioral marker, rest-activity rhythm, could influence self-management in young adults with type 1 diabetes (T1D). Little is known about the rest-activity rhythms, executive function, and glycemia among young adults with type 1 diabetes (T1D). The purpose of this study was to evaluate parametric and nonparametric circadian characteristics of the rest-activity rhythm and the associations between these variables, sleep-wake behavior, executive function, and glycemia among young adults with T1D. Young adults with T1D, recruited from diabetes clinics, wore wrist actigraphs and a continuous glucose monitor (CGM) concurrently for 6-14 days. Participants completed a 3-minute Trail Making Test on paper and electronic questionnaires - 8-item PROMIS v1.0 Emotional Distress Scale, 17-item Diabetes Distress Scale, including twice-daily Pittsburgh sleep diaries. Cosinor and nonparametric analyses were used to compute the rest-activity rhythm parameters, and linear regression modeling procedures were performed to determine the associations among the study variables. The sample included 46 young adults (mean age 22.3 ± 3.2; 32.6% male; 84.8% non-Hispanic White, HbA1c mean 7.2 ± 1.1%, BMI mean 27.0 ± 4.4 kg/m²). A number of parametric associations were observed between a stronger rhythm, better objective sleep-wake characteristics, and less daytime sleepiness. Nonparametric circadian parameters were significantly associated with several outcomes: a stronger rhythm adherence (higher inter-daily stability) with better objective sleep-wake characteristics, better executive function, lower diabetes distress, less hyperglycemia risk, and more time spent in hypoglycemia/hypoglycemia risk; and a more robust rhythm (higher relative amplitude) with better objective sleep-wake characteristics and more time spent in hypoglycemia/higher hypoglycemia risk. Future work should be directed at designs that test causality, such as interventions directed at the strength and stability of rest-activity rhythms, for the potential to improve glucoregulation and other diabetes outcomes.

Cancer and stress: NextGen strategies

Chronic stress is well-known to cause physiological distress that leads to body balance perturbations by altering signaling pathways in the neuroendocrine and sympathetic nervous systems. This increases allostatic load, which is the cost of physiological fluctuations that are required to cope with psychological challenges as well as changes in the physical environment. Recent studies have enriched our knowledge about the role of chronic stress in disease development, especially carcinogenesis. Stress stimulates the hypothalamic-pituitaryadrenal (HPA) axis and the sympathetic nervous system (SNS), resulting in an abnormal release of hormones. These activate signaling pathways that elevate expression of downstream oncogenes. This occurs by activation of specific receptors that promote numerous cancer biological processes, including proliferation, genomic instability, angiogenesis, metastasis, immune evasion and metabolic disorders. Moreover, accumulating evidence has revealed that β-adrenergic receptor (ADRB) antagonists and downstream target inhibitors exhibit remarkable anti-tumor effects. Psychosomatic behavioral interventions (PBI) and traditional Chinese medicine (TCM) also effectively relieve the impact of stress in cancer patients. In this review, we discuss recent advances in the underlying mechanisms that are responsible for stress in promoting malignancies. Collectively, these data provide approaches for NextGen pharmacological therapies, PBI and TCM to reduce the burden of tumorigenesis.

A qualitative evaluation of the use of interventions to treat fatigue among cancer survivors: A healthcare provider's view

OBJECTIVE

Cancer-related fatigue (CRF) is among the most common and distressing side effects of cancer treatment. Different types of interventions, including physical activity (PA), psychosocial and mind-body interventions, have been shown to reduce CRF. We aimed to explore HCPs' practices and barriers to refer patients towards interventions to reduce CRF.

METHODS

We performed a qualitative study using key informant interviews among a sample of 20 HCPs including medical, surgical and radiation oncologists, pain specialists, nurses, psychologists, psychiatrists and physiotherapists recruited from breast, prostate and colorectal cancer disease groups from a comprehensive cancer centre.

RESULTS

Most interviewees reported not to address CRF spontaneously during consultations. When the topic of CRF was brought up by patients, all interviewees acknowledged to recommend PA, whereas few would recommend psychosocial or mind-body interventions. Barriers to recommend interventions to manage CRF included: lack of knowledge about CRF and its treatment, lack of time and complexity of the referral due to their accessibility and cost.

CONCLUSION

In a diverse sample of HCPs, most acknowledged not to address CRF proactively with their patients, but identified several actionable barriers. Specific training on screening and management of CRF and improving the referral network dedicated to interventions need to be implemented.

Excess Body Weight and Cancer-Related Fatigue, Systemic Inflammation, and Serum Lipids in Breast Cancer Survivors

BACKGROUND

Cancer-related fatigue (CRF) is a common side effect impacting breast cancer survivors. Research points to a relationship between obesity and CRF in breast cancer survivors related to elevated systemic inflammation and metabolic alterations.

METHODS

This cross-sectional study examined the relationship of obesity to CRF, inflammatory markers and serum lipids through a secondary analysis of a nationwide randomized controlled trial. Breast cancer survivors with CRF were categorized based on BMI category. Symptoms of CRF, inflammatory markers and serum fatty acids were assessed among groups.

RESULTS

There were 105 breast cancer survivors in the analysis. BMI was positively associated with CRF based on MFSI General (p = 0.020; 95% C.I. 0.024, 0.273) and MFSI Physical (p = 0.013; 95% C.I. 0.035, 0.298) subscales. TNF-α (p = 0.007; 95% C.I. 0.007, 0.044), and IL-6 (p = 0.020; 95% C.I. 0.006, 0.073) were elevated in the obese. Monounsaturated fatty acid levels (p = 0.047; 95% C.I. 0.000, 0.053) and the omega-6 to omega-3 fatty acid ratio were associated with obesity (p = 0.047; 95% C.I. 0.002, 0.322).

CONCLUSIONS

Obese breast cancer survivors had greater levels of CRF, inflammatory markers and certain fatty acids. Inflammatory markers and fatty acids were not found to have any mediating or positive association with CRF variables in this analysis. NCT02352779.