The impact of physical activity on health-related fitness and quality of life for patients with head and neck cancer: a systematic review

Effects of high-intensity interval training on vascular function in breast cancer survivors undergoing anthracycline chemotherapy: design of a pilot study

INTRODUCTION

Cardiovascular disease (CVD) mortality is higher among breast cancer survivors (BCS) who receive chemotherapy compared with those not receiving chemotherapy. Anthracycline chemotherapy is of particular concern due to anthracycline-related impairment of vascular endothelial cells and dysregulation of the extracellular matrix. One strategy proven to offset these impairments is a form of exercise known as high-intensity interval training (HIIT). HIIT improves endothelial function in non-cancer populations by decreasing oxidative stress, the main contributor to anthracycline-induced vascular dysfunction. The purpose of this pilot study is to assess the feasibility of an 8-week HIIT, as well as the HIIT effects on endothelial function and extracellular matrix remodelling, in BCS undergoing anthracycline chemotherapy.

METHODS AND ANALYSIS

Thirty BCS are randomised to either HIIT, an 8-week HIIT intervention occurring three times per week (seven alternating bouts of 90% of peak power output followed by 10% peak power output), or delayed group (DEL). Feasibility of HIIT is assessed by (1) the percentage of completed exercise sessions and (2) the number of minutes of exercise completed over the course of the study. Vascular function is assessed using brachial artery flow-mediated dilation and carotid intima media thickness. Extracellular matrix remodelling is assessed by the level of matrix metalloproteinases in the plasma. A repeated-measures analysis of covariance model will be performed with group (HIIT and DEL group) and time (pre/post assessment) as independent factors. We hypothesise that HIIT will be feasible in BCS undergoing anthracycline chemotherapy, and that HIIT will improve endothelial function and extracellular matrix remodelling, compared with the DEL group. Success of this study will provide evidence of feasibility and efficacy to support a larger definitive trial which will impact cancer survivorship by decreasing anthracycline-induced vascular dysfunction, thereby benefiting cardiovascular markers that are related to CVD risk.

ETHICS AND DISSEMINATION

This trial was approved by the University of Southern California Institutional Review Board (HS-15-00227).

TRIAL REGISTRATION NUMBER

NCT02454777; Pre-results.

A Systematic Review of Exercise Systematic Reviews in the Cancer Literature (2005-2017)

BACKGROUND

Evidence supports the benefits of exercise for patients with cancer; however, specific guidance for clinical decision making regarding exercise timing, frequency, duration, and intensity is lacking. Efforts are needed to optimize clinical recommendations for exercise in the cancer population.

OBJECTIVES

To aggregate information regarding the benefit of exercise through a systematic review of existing systematic reviews in the cancer exercise literature.

DATA SOURCES

PubMed, CINAHL Plus, Scopus, Web of Science, and EMBASE.

STUDY ELIGIBILITY CRITERIA

Systematic reviews and meta-analyses of the impact of movement-based exercise on the adult cancer population.

METHODS

Two author teams reviewed 302 abstracts for inclusion with 93 selected for full-text review. A total of 53 studies were analyzed. A Measurement Tool to Assess Systematic Reviews (AMSTAR) was used as a quality measure of the reviews. Information was extracted using the PICO format (ie, participants, intervention, comparison, outcomes). Descriptive findings are reported.

RESULTS

Mean AMSTAR score = 7.66/11 (±2.04) suggests moderate quality of the systematic reviews. Exercise is beneficial before, during, and after cancer treatment, across all cancer types, and for a variety of cancer-related impairments. Moderate-to-vigorous exercise is the best level of exercise intensity to improve physical function and mitigate cancer-related impairments. Therapeutic exercises are beneficial to manage treatment side effects, may enhance tolerance to cancer treatments, and improve functional outcomes. Supervised exercise yielded superior benefits versus unsupervised. Serious adverse events were not common.

LIMITATIONS

Movement-based exercise intervention outcomes are reported. No analysis of pooled effects was calculated across reviews due to significant heterogeneity within the systematic reviews. Findings do not consider exercise in advanced cancers or pediatric populations.

CONCLUSIONS

Exercise promotes significant improvements in clinical, functional, and in some populations, survival outcomes and can be recommended regardless of the type of cancer. Although generally safe, patients should be screened and appropriate precautions taken. Efforts to strengthen uniformity in clinical trial reporting, develop clinical practice guidelines, and integrate exercise and rehabilitation services into the cancer delivery system are needed.

A turning point: Head and neck cancer patients' exercise preferences and barriers before and after participation in an exercise intervention

This study examined the exercise barriers and preferences of head and neck cancer (HNC) survivors in relation to exercise experience. Participants (n = 22; 46.8% response rate) completed retrospective self-report questionnaires on demographic and medical information, exercise barriers and preferences. A subset of participants then completed semi-structured interviews (n = 18). Participants had previously engaged in the ENHANCE trial during, or immediately following, radiation treatment, an average of 22.1 ± 5.8 months before. Retrospective questionnaires revealed that before ENHANCE participation, lack of interest and time were the primary exercise barriers. After participation, there was a significant decrease in typical barriers including lack of interest (p = .008), exercise not a priority (p = .039) and exercise not in routine (p = .004). Number of barriers experienced after ENHANCE participation was negatively correlated with age, quality of life and minutes of resistance exercise training per week. After ENHANCE participation, significant increases were found in preference for exercising at a cancer centre (p = .031) and with other cancer survivors (p = .016). Four higher order themes emerged inductively from interview data analysis pertaining to preferences (i.e., class format) and three higher order themes regarding barriers (physical, psychological and external). By investigating participants' perspectives after ENHANCE participation, key factors for effective HNC exercise programme design were identified.

Patient adherence to swallowing exercises in head and neck cancer

PURPOSE OF REVIEW

A younger population and improved treatments for head and neck cancer (HNC) mean that more people are now living longer with the consequences of treatment, including long-term swallowing problems (dysphagia). Exercises aim to improve swallowing function, however highly variable adherence rates are currently reported, with no standard measure of adherence.

RECENT FINDINGS

Measuring adherence to swallowing exercises depends on the definition of 'adherence', the tools used to measure adherence, and the acceptable threshold that is used to constitute adherence or nonadherence. Particular barriers to swallowing exercise adherence include the burden of treatment, the commitment required to undertake a home-based exercise programme and the difficulty in motivating patients to exercise before swallowing problems have become apparent. Findings from the wider literature on general exercise interventions highlight the importance of external and patient-related factors on adherence, including patient beliefs, social support, self-regulation and goal setting.

SUMMARY

Key barriers and motivators to adherence are presented, which will have implications for the design of future swallowing exercise interventions. The relevance of behaviour change theory in facilitating adherence is highlighted, with ongoing studies used to exemplify how behaviour change components and analysis of patient beliefs can be incorporated into intervention development.

Patient-reported physical activity and the association with health-related quality of life in head and neck cancer survivors

Purpose

This study aimed to assess patient-reported levels of physical activity (PA) and its associations with health-related quality of life (HRQoL) adjusted for important demographic, lifestyle-related, and clinical factors, among head and neck (HNC) survivors.

Methods

This cross-sectional study included 116 HNC survivors. PA was assessed with the Physical Activity Scale for the Elderly (PASE) and HRQoL with the EORTC-QLQ-C30 and EORTC-HN35. Associations were studied using univariable and multivariable regression analyses.

Results

Median PASE score was 100.3 (interquartile range 65.1;170.8) of which 54% were household, 34% leisure-time, and 12% occupational activities. Younger HNC survivors had higher levels of PA. Higher PA was significantly associated with higher global QoL (p < 0.05). Findings for physical function, role function, social function, fatigue, and pain were in line, but not statistically significant (0.05 ≤ p < 0.10).

Conclusions

Among HNC survivors, a large proportion of PA consists of household activities. Younger HNC survivors had higher PA levels, and higher PA levels were associated with higher HRQoL.

Future cancer research priorities in the USA: a Lancet Oncology Commission

We are in the midst of a technological revolution that is providing new insights into human biology and cancer. In this era of big data, we are amassing large amounts of information that is transforming how we approach cancer treatment and prevention. Enactment of the Cancer Moonshot within the 21st Century Cures Act in the USA arrived at a propitious moment in the advancement of knowledge, providing nearly US$2 billion of funding for cancer research and precision medicine. In 2016, the Blue Ribbon Panel (BRP) set out a roadmap of recommendations designed to exploit new advances in cancer diagnosis, prevention, and treatment. Those recommendations provided a high-level view of how to accelerate the conversion of new scientific discoveries into effective treatments and prevention for cancer. The US National Cancer Institute is already implementing some of those recommendations. As experts in the priority areas identified by the BRP, we bolster those recommendations to implement this important scientific roadmap. In this Commission, we examine the BRP recommendations in greater detail and expand the discussion to include additional priority areas, including surgical oncology, radiation oncology, imaging, health systems and health disparities, regulation and financing, population science, and oncopolicy. We prioritise areas of research in the USA that we believe would accelerate efforts to benefit patients with cancer. Finally, we hope the recommendations in this report will facilitate new international collaborations to further enhance global efforts in cancer control.

Unsupervised exercise in survivors of human papillomavirus related head and neck cancer: how many can go it alone?

PURPOSE

Patients with human papillomavirus (HPV)-related head and neck cancer (HNC) have a better prognosis relative to other types of HNC, making survivorship an emerging and critical issue. Exercise is a core component of survivorship care, but little is known about how many survivors of HPV-related HNC can safely be advised to start exercising on their own, as opposed to needing further evaluation or supervised exercise.

METHODS

We utilized guidelines to identify health issues that would indicate value of further evaluation prior to being safely prescribed unsupervised exercise. We performed a retrospective chart review of 150 patients with HPV-related HNC to assess health issues 6 months after completing definitive therapy. Patients with at least one health issue were deemed appropriate to receive further evaluation prior to prescription for unsupervised exercise. We utilized logistic regression to identify clinical and demographic factors associated with the need for further evaluation, likely performed by outpatient rehabilitation clinicians.

RESULTS

In this cohort of patients, 39.3% could safely be prescribed unsupervised exercise 6 months after completing definitive therapy. On multivariable regression, older age, BMI >30, and receipt of radiation were associated with an increased likelihood for requiring further evaluation or supervised exercise.

CONCLUSIONS

Over half of patients with HPV-related HNC would benefit from referral to physical therapy or an exercise professional for further evaluation to determine the most appropriate level of exercise supervision, based upon current guidelines.

IMPLICATIONS FOR CANCER SURVIVORS

Development of such referral systems will be essential to enhance survivorship outcomes for patients who have completed treatment.

Informational and Support Needs of Patients with Head and Neck Cancer: Current Status and Emerging Issues

The objective of this article is to review and summarize the extant literature on head and neck cancer (HNC) patients’ informational needs and to characterize emerging issues in this patient population in order to define priorities for future research. HNC patients may undergo challenging treatment regimens and experience treatment-related alterations in primary daily functions such as speech and eating. These changes often persist following treatment and may lead to significant deficits in quality of life and interpersonal relations. Despite empirical evidence demonstrating that receipt of adequate information and support is predictive of improved outcomes post-treatment, relatively limited attention has been paid to the informational and support needs of HNC patients. This review focuses primarily on three topic domains: (1) managing treatment-related side effects; (2) addressing alcohol and tobacco dependence; and (3) informational needs in the areas of human papillomavirus (HPV) and clinical trials. While there is increasing awareness of the rehabilitation and survivorship needs in this patient population, patients note that the impact of treatment on social activities and interactions is under-discussed and of key concern. In addition, there is a significant gap in addressing communication and informational needs of caregivers and family members who are integral for promoting healthy behaviors and self-care post-treatment. Greater integration of programs that address tobacco or alcohol dependency within a comprehensive treatment and support plan may increase patient motivation to seek help and enhance patient success in maintaining long-term abstinence. Finally, emerging patient-provider communication needs, particularly in the context of decision making about clinical trials or surrounding an HPV-related diagnosis, have been noted among both patients and healthcare providers. Future research on the development of novel programs that offer feasible and acceptable methods for addressing unmet informational and support needs is warranted and may yield benefit for improving patient-reported outcomes.

Assessment of Cancer Survivors' Experiences of Using a Publicly Available Physical Activity Mobile Application

Background

Regular participation in physical activity (PA) is associated with improved physical and psychosocial outcomes in cancer survivors. However, PA levels are low during and after cancer treatment. Interventions to promote PA in this population are needed. PA mobile apps are popular and have potential to increase PA participation, but little is known about how appropriate or relevant they are for cancer survivors.

Objective

This study aims to (1) assess recruitment, study uptake, and engagement for a publicly available PA mobile app (GAINFitness) intervention in cancer survivors; (2) assess cancer survivors’ attitudes towards the app; (3) understand how the app could be adapted to better meet the needs of cancer survivors; and (4) to determine the potential for change in PA participation and psychosocial outcomes over a 6-week period of using the app.

Methods

The present study was a one-arm, pre-post design. Cancer survivors (N=11) aged 33 to 62 years with a mean (SD) age of 45 (9.4), and 82% (9/11) female, were recruited (via community/online convenience sampling to use the app for 6 weeks). Engagement with the app was measured using self-reported frequency and duration of usage. Qualitative semi-structured telephone interviews were conducted after the 6-week study period and were analyzed using thematic analysis. PA, well-being, fatigue, quality of life (QOL), sleep quality, and anxiety and depression were self-reported at baseline and at a 6-week follow-up using the Godin Leisure Time Exercise Questionnaire (GLTEQ), the Functional Assessment of Cancer Therapy-General (FACT-G), the Functional Assessment of Chronic Illness Therapy (FACIT)-Fatigue Scale Questionnaire, the Health and Quality of Life Outcomes (EQ5D) Questionnaire, the Pittsburgh Sleep Quality Index (PSQI), and the Hospital Anxiety and Depression Scale (HADS), respectively.

Results

Of the people who responded to the study advertisement, 73% (16/22) agreed to participate and 100% (11/11) of the participants who started the study completed all baseline and follow-up outcome measures and the telephone interview. On average, participants used the app twice a week for 25 minutes per session. Four themes were identified from the qualitative interviews surrounding the suitability of the app for cancer survivors and how it could be adapted: (1) barriers to PA, (2) receiving advice about PA from reliable sources, (3) tailoring the application to one’s lifestyle, and (4) receiving social support from others. Pre-post comparison showed significant increases in strenuous PA, improvements in sleep quality, and reductions in mild PA. There were no significant changes in moderate PA or other psychosocial outcomes.

Conclusions

All participants engaged with the app and qualitative interviews highlighted that the app was well-received. A generic PA mobile app could bring about positive improvements in PA participation and psychosocial outcomes among cancer survivors. However, a targeted PA app aimed specifically towards cancer survivors may increase the relevance and suitability of the app for this population.

Pancreatic cancer survivors' preferences, barriers, and facilitators related to physical activity and diet interventions

PURPOSE

To conduct a telephone survey establishing pancreatic cancer survivors' level of interest in, preferences for, and perceived barriers and facilitators to participating in exercise and diet intervention programming. These data will inform the development of such interventions for newly-diagnosed patients.

METHODS

Seventy-one survivors treated for resectable pancreatic adenocarcinoma from October 2011 to August 2014 were identified through an institutional cancer registry and contacted via telephone. A telephone survey was conducted to query survivors' level of interest in, preferences for, and perceived barriers and facilitators to participating in an exercise and dietary intervention program shortly after disease diagnosis. Acceptability of a technology-based visual communication (e.g., Skype™, FaceTime®) intervention was also assessed.

RESULTS

Fifty participants completed the survey (response rate 71.8 %). Over two-thirds of participants reported interest in exercise and diet intervention programming. Over half reported comfort with a technology-delivered visual communication intervention. Barriers to participation included older age and physical, personal, and emotional problems. The most common facilitator was program awareness. Outcomes for future research important to participants were supportive care and quality of life.

CONCLUSIONS

Most pancreatic cancer patients are interested in exercise and diet interventions shortly after diagnosis; however, some barriers to program participation exist.

IMPLICATIONS FOR CANCER SURVIVORS

Future research and intervention planning for pancreatic cancer survivors should focus on developing messaging and strategies that provide support for survivorship outcomes, increase survivor awareness, address lack of familiarity with technology, reduce fears about potential barriers, and help survivors overcome these barriers. In so doing, survivorship needs can be better met and quality of life improved in this understudied population.

Patient-reported outcomes, body composition, and nutrition status in patients with head and neck cancer: Results from an exploratory randomized controlled exercise trial

BACKGROUND

Patients with head and neck cancer experience loss of weight and muscle mass, decreased functioning, malnutrition, depression, and declines in quality of life during and after treatment. The purpose of this exploratory randomized study was to determine the optimal timing for the initiation of a lifestyle and progressive resistance exercise training intervention (during or after radiation therapy), as determined by intervention adherence and by comparing between-group outcomes across 24 weeks.

METHODS

Sixty patients with head and neck cancer were randomized to engage in a 12-week lifestyle intervention and progressive resistance-training program either during radiation treatment or immediately after completion. The primary outcome of body composition--specifically, lean body mass, body mass index, and body fat--as well as secondary outcomes of fitness, quality of life, depression, and nutrition status were evaluated.

RESULTS

The progressive resistance-training intervention carried out during treatment did not significantly influence the primary outcome of body composition, despite a significant increase in weekly physical activity reported by the intervention group. A small-to-medium intervention effect was noted for some secondary outcomes, including fitness, quality of life, and nutrition status. Regardless of whether patients received the immediate or delayed progressive resistance-training intervention, the analysis revealed a main effect of time on body composition, fitness, quality of life, depression, and nutritional scores.

CONCLUSIONS

Although the intervention during treatment did not reduce the loss of lean body mass, delaying the exercise program until after treatment completion was associated with improved intervention adherence, a finding with important clinical implications.