The effects of home-based exercise therapy for breast cancer-related fatigue induced by radical radiotherapy

Feasibility, safety, and adherence of home-based exercise interventions in people diagnosed with cancer: a systematic review

PURPOSE

This systematic review aims to evaluate the feasibility, safety, and adherence of home-based exercise interventions in people diagnosed with cancer. The primary research question is: Are home-based exercise interventions safe and feasible for people diagnosed with cancer?

METHODS

A comprehensive search of databases including PubMed, EMBASE, and Cochrane Library was conducted in January 2025, focusing on randomized controlled trials (RCTs) that involved home-based exercise interventions people diagnosed with cancer. Studies were included if they reported on safety, feasibility, and health-related outcomes. The Physiotherapy Evidence Database (PEDro) scale was used to assess study quality and risk of bias. Adverse events were categorized by severity, and feasibility which was determined based on recruitment, withdrawal, and adherence rates.

RESULTS

From 127 eligible studies involving 10,562 participants, the review found that home-based exercise interventions are generally safe, with less than 3.2% of participants experiencing exercise-related adverse events, most of which were minor. Feasibility was supported by an average recruitment rate of 50.1%, which was calculated as the proportion of eligible participants who consented to participate across the included studies. Additionally, the review found a withdrawal rate of 13.7%, and an adherence rate of 76.2%. However, significant variability in these rates were observed across the studies, highlighting the challenges in maintaining participant engagement.

CONCLUSIONS

Home-based exercise interventions are feasible and safe for people diagnosed with cancer, with minor adverse events being the most common. However, there is a need for standardized protocols in reporting adverse events and better strategies to improve recruitment and adherence.

IMPLICATIONS FOR CANCER SURVIVORS

These findings support the integration of home-based exercise into standard cancer care, offering a practical and safe option for enhancing the health and well-being of cancer survivors. However, the successful implementation of these programs may require additional support from exercise professionals within primary care or community settings to ensure appropriate guidance and adherence. Personalized exercise programs, developed by qualified exercise professionals such as physiotherapists or clinical exercise physiologists, and improved reporting standards are essential to optimizing these interventions.

The impact of exercise during radiotherapy on treatment-related side effects in breast cancer patients: A systematic review and meta-analysis

PURPOSE

Radiation therapy for breast cancer often causes side effects like cancer-related fatigue, depression, and sleep disorders, impacting health-related quality of life, psychosocial aspects, and physical function. Exercise therapy is commonly used to manage cancer-related fatigue, but its effectiveness remains uncertain due to varying patient conditions and adherence. This systematic review aims to assess exercise interventions during radiotherapy for their effects on physiological and psychological side effects in breast cancer patients, clarifying efficacy and exploring different intervention types.

METHODS

Randomized controlled trials were searched in PubMed, EBSCO, Scopus, Web of Science, and the Cochrane Library up to April 24, 2024. Trials included breast cancer patients undergoing exercise therapy (e.g., running, yoga, Qi Gong, resistance training). Primary outcomes were cancer-related fatigue levels and quality of life; secondary outcomes included sleep quality and depressive symptoms.

RESULTS

Sixteen trials with 1373 stage 0 to III breast cancer patients were analyzed. The results indicate that exercise during radiation therapy has a significant positive impact on reducing cancer-related fatigue compared to the control group (SMD = -0.29, 95% CL: -0.56 to -0.02, P = 0.032), subgroup analysis showed that compared to treadmill exercise, Tai Chi, and resistance training with equipment, yoga is more effective in improving cancer-related fatigue in breast cancer patients. Regarding improvement in quality of life (SMD = 0.29, 95 % CI: -0.08 to 0.66, P = 0.121), sleep quality (SMD: -0.27, 95 % CI: -0.62 to 0.07, P = 0.116), and depression (SMD: -0.01, 95 % CI: -0.35 to 0.34, P = 0.977), the three groups did not show significant statistical differences, but they demonstrated beneficial effects in alleviation, which require further studies for confirmation.

CONCLUSION

Exercise therapy can effectively alleviate cancer-related fatigue in breast cancer patients, with yoga being the most recommended form of exercise. Exercise therapy shows potential for improving quality of life, sleep, and depressive symptoms, necessitating more clinical studies for validation.

The effectiveness of exercise and/or nutritional interventions to improve the quality of life of women with breast cancer receiving radiation therapy: a scoping review

Currently, in Australia, 1 in 8 women are diagnosed with breast cancer. A common adjuvant treatment for breast cancer is radiation therapy (RT). The amalgamation of side effects caused by RT treatment can ultimately affect a patient's quality of life (QoL). With increasing breast cancer survival, a greater focus on the non-lethal consequences of this disease and its treatment is warranted. Exercise and nutrition have proven beneficial in promoting and supporting overall health and managing chronic diseases. Furthermore, exercise has demonstrated improvement and sustainment to QoL. The focus of this scoping literature review was to determine the scale of evidence regarding the effectiveness of exercise and/or nutritional interventions for women with breast cancer receiving radiation therapy. An online search of five databases was conducted to identify studies published between 2000 and 2023. The 58 studies included in the scoping review comprised 46 interventions and 4615 women with breast cancer who received radiation therapy participated. Most studies (90%; n = 52) were 'exercise only' based, 3% (n = 2) were 'nutrition only', and the remaining 7% (n = 4) of studies were combined exercise and nutrition interventions. The findings from this review highlight most studies are dedicated to investigating exercise. Further research is required to fully understand the potential benefits of these interventions and their synergistic impact on the quality of life of women with breast cancer receiving radiation therapy.

Impact of rehabilitation unit-based physical activity therapy versus symptomatic supportive treatment on older patients with advanced cancer: a non-randomized controlled study

OBJECTIVES

Relatively few studies have investigated the effects of rehabilitation-based physical activity therapy as a treatment for older patients with advanced cancer. This study evaluated the effects of individualized precise and structured exercise interventions, prescribed by a rehabilitation physician, on fatigue, quality of life (QOL), and physical activity in older patients with advanced cancer.

METHODS

After admission to the rehabilitation department, older cancer patients were divided into groups receiving conventional symptomatic supportive therapy (SST) or physical activity therapy plus conventional symptomatic supportive therapy (PAT). The SST group was given symptomatic supportive treatment, exercised on their own, and were observed at home after their symptoms improved. The PAT group was required to implement physical exercise along with SST, involving 30 min of moderate-intensity exercise per day and 5 days per week, and were discharged after 4 weeks and instructed to continue to exercise outside the hospital. Cancer-related fatigue (CRF) at 4 and 8 weeks was the primary endpoint of the study, while the secondary endpoints included patients' QOL, physical activity, and exercise adherence rate.

RESULTS

Sixty-five patients were included; 37 (56.92%) chose to enter the PAT group, and 28 (43.08%) chose to enter the SST group. After 4 and 8 weeks of treatment, CRF relief and QOL improvement were significantly better in the PAT group than in the SST group (p < 0.05), whereas global health status did not differ between the two treatment groups (T1: p = 0.84; T2: p = 0.92). Mild physical activity significantly increased for the PAT group at T1 and T2 (T1: p = 0.03; T2: p = 0.005). At the T2 time point, the PAT group exhibited a higher level of participation in moderate-intensity physical activities as well as a higher total leisure activity score (p < 0.05). Thirty-three patients (94.29%) completed the PAT exercise program during hospitalization. Only four (12.12%) patients achieved moderate-intensity exercise, while the other 29 (87.88%) patients were able to continue exercising after their exercise intensity was decreased.

CONCLUSIONS

Implementation of precise and individualized exercise interventions, prescribed by the rehabilitation team, can lead to the reduction of CRF and improvement of QOL, and change in behavior related to physical activity.

Home-based exercise interventions' impact on breast cancer survivors' functional performance: a systematic review

INTRODUCTION

Home-based exercise (HBE) programs can be a feasible strategy to enhance functional performance and promote physical activity (PA) in breast cancer survivors. A deeper analysis of the effects of HBE interventions, structured by HBE program type and treatment phase, is needed. This systematic review aimed to synthesize the evidence on HBE interventions' impact on breast cancer survivors' functional performance, PA levels, and program adherence rates, according to HBE intervention type and treatment phase.

METHODS

A comprehensive search of peer-reviewed articles reporting HBE interventions' effects on the outcomes of interest was performed in Pubmed, Google Scholar, EBSCO, Web of Science, Science Direct, and B-ON until January 15th, 2024. Data were synthesized according to Denton's domains to classify HBE interventions (prescription: structured vs. unstructured; Delivery method: supervised vs. facilitated vs. unsupervised) and treatment phase. Methodological quality appraisal was performed using the Effective Public Health Practice Project tool.

RESULTS

Twenty-six studies were included. Most studies conducted structured/facilitated interventions and reported positive effects on functional performance (particularly aerobic capacity), increases in PA levels, and high adherence rates (> 70%) during and post-treatment.

CONCLUSION

HBE interventions may be feasible to improve functional performance and promote physical activity among breast cancer survivors. Further studies are needed to confirm which HBE intervention type is more appropriate for each treatment phase. More evidence applying HBE interventions with different designs is required to allow the drawing of more solid conclusions. Studies exploring the effects of HBE interventions on the pre-treatment phase are needed.

Updated systematic review of the effects of exercise on understudied health outcomes in cancer survivors

INTRODUCTION

The American College of Sports Medicine provided guidelines for exercise prescriptions in cancer survivors for specific cancer- and treatment-related health outcomes. However, there was insufficient evidence to generate exercise prescriptions for 10 health outcomes of cancer treatment. We sought to update the state of evidence.

METHODS

We conducted a systematic review of these 10 understudied health outcomes (bone health, sleep, cardiovascular function, chemotherapy-induced peripheral neuropathy (CIPN), cognitive function, falls and balance, nausea, pain, sexual function, and treatment tolerance) and provided an update of evidence.

RESULTS

While the evidence base for each outcome has increased, there remains insufficient evidence to generate exercise prescriptions. Common limitations observed across outcomes included: variability in type and quality of outcome measurement tools, variability in definitions of the health outcomes, a lack of phase III trials, and a majority of trials investigating breast or prostate cancer survivors only.

CONCLUSION

We identified progress in the field of exercise oncology for several understudied cancer- and treatment-related health outcomes. However, we were not able to generate exercise prescriptions due to continued insufficient evidence base. More work is needed to prescribe exercise as medicine for these understudied health outcomes, and our review highlights several strategies to aid in research acceleration within these areas of exercise oncology.

Differential Impact of Exercises on Quality-of-Life Improvement in Breast Cancer Survivors: A Network Meta-Analysis of Randomized Controlled Trials

This study aimed to assess the effectiveness of various exercise interventions in enhancing the quality of life for breast cancer survivors. To achieve this, randomized controlled trials were identified from major electronic databases, focusing on the relationship between exercise and quality of life in breast cancer survivors. The primary outcome was the impact of exercise on quality of life 12 weeks after the intervention, with a secondary outcome comparing dropout rates between intervention groups and a regular care control group. The study protocol was registered with INPLASY (INPLASY202340007). A network meta-analysis of nine randomized controlled trials involving 725 participants was conducted, examining aerobic and strength training, aerobic activity, yoga, and strength exercise. Results showed that aerobic and strength training was the most effective intervention, significantly improving the quality of life of breast cancer survivors (1.31; 95% confidence interval: 0.49 to 2.12). Aerobic activity had a borderline effect (0.83; 0.03 to 1.63), while no exercise interventions were associated with an increased dropout risk compared to the control group (regular care). The study concluded that concurrent aerobic and strength training can improve breast cancer survivors' quality of life after 12 weeks of intervention without increasing dropout risk compared to regular care.