Adding high-intensity interval training to conventional training modalities: optimizing health-related outcomes during chemotherapy for breast cancer: the OptiTrain randomized controlled trial

The effect of exercise on cognitive function in breast cancer survivors: systematic review and meta-analysis of randomized controlled trials

PURPOSE

Cancer-related cognitive impairment (CRCI) is a common side effect among breast cancer survivors. Emerging evidence suggests that exercise may help manage CRCI. This systematic review and meta-analysis evaluated the impact of exercise programs on cognitive function in breast cancer survivors.

METHODS

PubMed, Cochrane, Embase, and Web of Science were searched in May 2023 for randomized controlled trials (RCTs). Two independent reviewers conducted the screening and selection of studies based on predefined eligibility criteria, including title/abstract and full-text screening, using the Rayyan platform. Study quality was assessed using the Cochrane Risk of Bias 2 tool. Meta-analyses were conducted in R using the "meta" package, comparing experimental and control groups for cognitive domains and self-reported cognitive outcomes post-intervention.

RESULTS

Eleven RCTs with 890 breast cancer survivors showed significant exercise effects on attention and working memory (SMD 0.43, 95% CI [0.20; 0.66], p < 0.001, I² = 51%), executive function (SMD -0.29, 95% CI [-0.46; -0.13], p < 0.001, I² = 0%), perceived cognitive abilities (SMD 0.95, 95% CI [0.32; 1.57], p = 0.003, I² = 69%), and cognitive complaints (SMD -0.75, 95% CI [-1.07; -0.44], p < 0.001, I² = 0%).

CONCLUSION

This systematic review with meta-analysis demonstrates that exercise improves cognitive function in breast cancer survivors, particularly attention, working memory, executive function, and self-reported cognitive outcomes. However, the heterogeneity in cognitive assessment tools underscores the need for greater standardization, including the combined use of validated self-report questionnaires and neuropsychological tests, as well as a stronger emphasis on cognitive function as a primary outcome, to enhance comparability and strengthen the evidence base.

IMPLICATIONS FOR CANCER SURVIVORS

Exercise programs should be integrated into survivorship care to address CRCI, support cognitive health, and improve overall quality of life.

Exercise to Manage Fatigue During and After Chemotherapy in Adolescents and Young Adults With Cancer: A Systematic Review and Meta-Analysis

PROBLEM IDENTIFICATION

There is a gap in knowledge about the efficacy of exercise in managing cancer-related fatigue (CRF) in adolescents and young adults (AYAs) during and after chemotherapy.

LITERATURE SEARCH

A systematic search was conducted in Scopus®, PubMed®, and CINAHL®, as well as citation searching, for studies about the impact of exercise on CRF in the AYA population. Abstract and full-text screening of 2,234 studies produced 15 studies for systematic review and 13 for meta-analysis.

DATA EVALUATION

Effect size was calculated using standardized mean difference and confidence intervals. Subgroup analysis was conducted to assess the impact of various exercise types on CRF. A meta-regression was performed using exercise frequency, intensity, and duration as predictors to determine relationships with effect size on CRF and adherence to exercise.

SYNTHESIS

Exercise had a large effect size on CRF in AYAs. No difference in effect size estimates for exercise type subgroups was observed. A linear association was found between exercise duration and CRF (p = 0.005), and exercise intensity and adherence (p = 0.037).

IMPLICATIONS FOR PRACTICE

Exercise is effective in managing CRF among AYAs, and efforts should be aimed toward including it in routine oncologic care.

Kinect-Based Mixed Reality Exercise Program Improves Physical Function and Quality of Life in Breast Cancer Survivors: A Randomized Clinical Trial

PURPOSE

Exercise is an effective non-pharmacological approach for alleviating treatment-related adverse effects and enhancing physical fitness in breast cancer survivors. A Kinect-based mixed reality device (KMR), with real-time feedback and user data collection, is an innovative exercise intervention for breast cancer survivors. This study aimed to investigate the effect of KMR exercise program on quality of life (QOL) and physical function in breast cancer survivors.

MATERIALS AND METHODS

Seventy-seven participants were randomly assigned to either the KMR exercise group or home stretching group with an 8-week intervention. Physical function (shoulder range of motion, body composition, aerobic capacity, and hand grip strength) was evaluated before and after the intervention period. Participants completed questionnaires such as the Disabilities of the Arm, Shoulder, and Hand (DASH), Functional Assessment of Cancer Therapy-Breast, and International Physical Activity Questionnaire (IPAQ) to assess upper extremity disabilities, QOL, and physical activity levels.

RESULTS

Significant group-by-time interaction was found for flexion of the operated arm (154.3±12.5 to 165.8±11.2), and the non-operated arm (158.2±13.8 to 166.5±12.2), abduction of the non-operated arm (154.8±31.6 to 161.1±28.1), and adduction of the operated arm (46.5±9.1 to 52.6±7.2). Significant improvements were also observed in DASH (46.8±9.1 to 40.8±9.3) and IPAQ (1,136.3±612.8 to 1,287±664.1).

CONCLUSION

The KMR exercise program effectively improved the physical function, alleviated edema, reduced upper extremity disability, and enhanced the QOL in breast cancer survivors. Coupled with significant group-by-time interactions for various outcomes, the results emphasize the potential benefits of incorporating the KMR exercise program to improve the QOL in breast cancer survivors.

Digital multimodal intervention for cancer-related cognitive impairment in breast-cancer patients: Cog-Stim feasibility study

BACKGROUND

This feasibility study evaluated adherence and effectiveness to a digital multimodal intervention (cognitive and physical training) for cancer-related cognitive impairment (CRCI) in patients with breast cancer.

METHODS

Breast cancer patients undergoing radiotherapy and with significant cognitive complaints impacting quality of life participated in a 12-week intervention, combining non-simultaneous 20-min cognitive and 30-min physical sessions, twice weekly. Assessments included perceived cognitive impairment (PCI), objective cognition, fatigue, anxiety/depression, sleep and satisfaction. High level of adherence was defined as completing 9/12 weeks of the program. A week was complete when at least 70% of each of the planned sessions was completed. Physical activity intensity was defined by max age-related heart rate.

RESULTS

Among 419 radiotherapy-treated patients with breast cancer, 170 had cognitive complaints (41%), 83 were eligible (49%), 29 were not included (35%) due to organizational issue and 20 among eligible contacted patients agreed to participate (37%). The majority of participants (48.3 ± 8 years of age) received chemotherapy (18/20) and 17 had I-II cancer stage. Eleven of twenty participants were highly adherent (higher adherence in physical (95%) than cognitive training (55%)). All expressed satisfaction. Post-intervention, overall objective cognition (p = 0.016), PCI (p = 0.004), fatigue (p = 0.011), and depression (p = 0.049) significantly improved. Post-intervention, high adherence was associated with significant improvements in PCI (p = 0.01) and fatigue (p = 0.03). High-intensity physical training was associated with significant improvements in PCI (p < 0.05), fatigue (p = 0.011) and depression (p = 0.037).

CONCLUSIONS

This intervention showed to be feasible and potentially efficient for the management of CRCI in patients with breast cancer.

TRIAL REGISTRATION

NCT04213365, 27/12/2019.

Cardiovascular training for fatigue in people with cancer

RATIONALE

Cancer-related fatigue (CRF) is the most prevalent and severe symptom among people with cancer. It can be attributed to the cancer itself or to anticancer therapies. CRF affects the individual physically and mentally, and cannot be alleviated by rest. Studies show a positive effect of exercise on CRF.

OBJECTIVES

To evaluate the effects of cardiovascular training on cancer-related fatigue (CRF), quality of life (QoL), adverse events, anxiety, and depression in people with cancer, with regard to their stage of anticancer therapy (before, during, or after), up to 12 weeks, up to six months, or longer, postintervention.

SEARCH METHODS

We searched CENTRAL, MEDLINE, Embase, ClinicalTrials.gov and World Health Organization ICTRP to identify studies that are included in the review. The latest search date was October 2023.

ELIGIBILITY CRITERIA

We included randomised controlled trials (RCTs) evaluating cardiovascular training for CRF or QoL, or both, in people with cancer. Trials were eligible if training was structured, included at least five sessions, and instruction was face-to-face (via video tools or in person). We excluded studies with fewer than 20 randomised participants per group and where only an abstract was available.

OUTCOMES

Our critical outcomes were: short-, medium-, long-term CRF and QoL. Important outcomes were adverse events, and short-, medium-, long-term anxiety and depression.

RISK OF BIAS

We used the Cochrane RoB 1 tool to assess bias in RCTs.

SYNTHESIS METHODS

We used standard Cochrane methodology. We synthesised results for each outcome using meta-analysis where possible (inverse variance or Mantel-Haenszel; random-effects model). We pooled data for the respective assessment periods above. We used GRADE to assess certainty of evidence for each outcome.

INCLUDED STUDIES

We included 23 RCTs with 2135 participants, of whom 96.6% originated from high-income countries; 1101 participants were randomised to cardiovascular training and 1034 to no training. Studies included mostly females who were diagnosed with breast cancer. We also identified 36 ongoing and 12 completed studies that have not yet published (awaiting assessment). We only present findings on CRF, QoL and adverse events. For details regarding anxiety and depression, see full text.

SYNTHESIS OF RESULTS

Cardiovascular training before anticancer therapy versus no training for people with cancer We identified no studies for inclusion in this comparison. Cardiovascular training during anticancer therapy versus no training for people with cancer We included 10 studies (1026 participants); eight studies contributed data to quantitative analyses (860 participants). Cardiovascular training probably reduces short-term CRF slightly (mean difference (MD) 2.85, 95% confidence interval (CI) 1.16 to 4.55, on the Functional Assessment of Cancer Therapy - Fatigue (FACT-F), scale 0 to 52, higher values mean better outcome; minimally important difference (MID) 3; 6 studies, 593 participants) and probably results in little to no difference in short-term QoL (MD 3.56, 95% CI 0.21 to 6.90, on the European Organisation for Research and Treatment of Cancer Quality of Life Questionnaire C30 (EORTC QLQ C-30), scale 0 to 100, higher values mean better outcome, MID 10; 6 studies, 612 participants) (both moderate-certainty evidence). We are uncertain about the effects on medium-term CRF (MD 2.67, 95% CI -2.58 to 7.92, on FACT-F; MID 3; 1 study, 62 participants), long-term CRF (MD 0.41, 95% CI -2.24 to 3.05, on FACT-F; MID 3; 2 studies, 230 participants), medium-term QoL (MD 6.79, 95% CI -4.39 to 17.97, on EORTC QLQ C-30; MID 10; 1 study, 62 participants), and long-term QoL (MD 1.51, 95% CI -3.40 to 6.42, on EORTC QLQ C-30; MID 10; 2 studies, 230 participants) (all very low-certainty evidence). For adverse events (any grade and follow-up), we did not perform meta-analysis due to heterogeneous definitions, reporting, and measurement (9 RCTs, 955 participants; very low-certainty evidence). Cardiovascular training after anticancer therapy versus no training for people with cancer We included 13 studies (1109 participants); nine studies contributed data to quantitative analyses (756 participants). We are uncertain about the effects of cardiovascular training on short-term CRF (MD 3.62, 95% CI 0 to 7.13, on FACT-F; MID 3; 6 studies, 497 participants), long-term CRF (MD -0.80, 95% CI -1.72 to 0.13, on the Fatigue Symptom Inventory (FSI), scale 1 to 10, higher values mean worse outcome; MID 1; 2 studies, 262 participants), short-term QoL (MD 3.70, 95% CI -0.14 to 7.41, on the Functional Assessment of Cancer Therapy - General (FACT-G), scale 0 to 108, higher values mean better outcome; MID 4; 8 studies, 642 participants), long-term QoL (MD 3.10, 95% CI -1.12 to 7.32, on FACT-G; MID 4; 1 study, 201 participants), and adverse events (risk ratio (RR) 2.71, 95% CI 0.58 to 12.67; 1 study, 50 participants) (all very low-certainty evidence). There were no data for medium-term CRF and QoL.

AUTHORS' CONCLUSIONS

Moderate-certainty evidence shows that cardiovascular training by people with cancer during their anticancer therapy slightly reduces short-term CRF and results in little to no difference in short-term QoL. We do not know whether cardiovascular training increases or decreases medium-term CRF/QoL, and long-term CRF/QoL. There is very low-certainty evidence (due to heterogeneous definitions, reporting and measurement) evaluating whether the training increases or decreases adverse events. In people with cancer who perform cardiovascular training after anticancer therapy, we are uncertain about the effects on short-term CRF/QoL, long-term CRF/QoL, and adverse events. We identified a lack of evidence concerning cardiovascular training before anticancer therapy and on safety outcomes. The 36 ongoing and 12 completed, but unpublished, studies could help close this gap, and could contribute to improving the effect estimates and certainty.

FUNDING

This Cochrane review was funded by the Federal Ministry of Education and Research of Germany, grant number: FKZ 01KG2017.

REGISTRATION

Protocol available via DOI: 10.1002/14651858.CD015211.

Effects of Exercise in Adults With Cancer Pain: A Systematic Review and Network Meta-Analysis

CONTEXT

Pain is one of the most common symptoms of cancer patients, affecting the patient's physical, psychological, behavioral, social relations and other aspects. Previous studies have demonstrated that exercise is effective for cancer pain, and the optimal exercise is still unknown.

OBJECTIVES

This study aimed to compare the effects of different exercise interventions on cancer pain in adults.

METHODS

Randomized control trials identified from medical literature databases that reported effects of exercise in adults with cancer pain were included in this study. Literature screening and data extraction were conducted independently by 2 researchers. Cochrane Bias Assessment 2.0 was used to assess the quality of the literature, and Stata 15.0 software was used for Network meta-analysis.

RESULTS

Forty-one studies were included, involving 3537 patients with cancer pain. The types of exercise involved included aerobic exercise, medium intensity continuous training, high-intensity interval training, resistance exercise, mind-body exercise and comprehensive exercise program (CEP). The results suggested that CEP was more effective than the usual care in relieving pain intensity in cancer patients [SMD = -1.96,95% CI (-3.47, -0.44)] (SUCRA = 97.9%). Mind-body exercise outperformed usual care in reducing pain interference in cancer patients [SMD = -0.65, 95% CI (-1.21, -0.09)] (SUCRA = 83.8%).

CONCLUSION

Current evidence shows that CEP is the best way to relieve the pain intensity of cancer patients, and mind-body exercise is the best way to reduce pain interference of cancer patients. Due to the limited number and quality of the included studies, the above conclusions need to be further verified by more high-quality studies.

Effect of different exercise types on quality of life in patients with breast cancer: A network meta-analysis of randomized controlled trials

BACKGROUND

Exercise is a rehabilitation strategy for patients with breast cancer; however, the optimal type of exercise remains uncertain. This study aimed to compare the effects of five exercise types on the quality of life of patients with breast cancer and provide a basis for their exercise rehabilitation.

METHODS

As of May 2024, we searched four databases: Embase, PubMed, Web of Science, and Cochrane Library, and included randomized controlled trials that analyzed the effect of exercise on the quality of life of patients with breast cancer. A network meta-analysis was performed using a frequency-based framework.

RESULTS

Forty-five papers involving 4092 participants were included. The five types of exercises included were all significant in the direct comparison with the control group, except yoga and mind-body exercises. Aerobic, resistance, and combination exercises were associated with quality of life. However, in indirect comparisons, only mind-body exercise versus resistance exercise had a significant effect. The effect of exercise on the quality of life(total health status) of patients with breast cancer was ranked based on surface under the cumulative ranking curve (SUCRA) values combined with effect sizes as follows: aerobic exercise (SUCRA = 84.1) > combined exercise (SUCRA = 78.8) > resistance exercise (SUCRA = 66.4) > yoga (SUCRA = 39.3) > mind-body exercise (SUCRA = 27.2) > usual care (SUCRA = 4.1).

CONCLUSIONS

Exercise can rehabilitate the quality of life of patients with breast cancer, and aerobic exercise may be the best type of exercise to improve their quality of life(total health status).

A scoping review of studies exploring physical activity and cognition among persons with cancer

PURPOSE

This scoping review aimed to identify and synthesize published studies on physical activity (PA) and cognition among persons with cancer and elucidate knowledge gaps.

METHODS

Articles were identified through electronic and manual searches (02/21 and 03/22) using the following inclusion criteria: (1) empirical, peer-reviewed publication in English, (2) sample comprised persons with cancer, and (3) reported at least one statistical association between PA and cognition. Multiple reviewers independently performed study selection and data extraction, and results were mapped in tabular and narrative form.

RESULTS

Ninety-seven articles were eligible; these were largely published from 2017 to 2022 (54.6%), conducted in high-income countries (96.9%), and presented (quasi-)experimental studies (73.2%). Samples predominantly comprised women with breast cancer (48.5%), and recruitment often occurred post-treatment (63.9%). PA interventions included: aerobic (32.3%), resistance (4.8%), combined aerobic/resistance (38.7%), mind-body (19.4%), or other PA (4.8%). Most (66%) articles reported inconclusive findings; 32% were positive (in support of PA promoting cognition or vice versa), and 2.1% were negative. Diverse samples and studies with long-term follow-up were scarce.

CONCLUSIONS

The state of knowledge is insufficient and more rigorous, large-scale studies are required to provide definitive conclusions about the cognitive benefits of PA among persons with cancer.

IMPLICATIONS FOR CANCER SURVIVORS

Cancer-related cognitive impairment (CRCI) thwarts quality of life. This review summarizes what is known about the association between PA and cognition among persons with cancer and concludes that the evidence is currently equivocal. Hence, it remains uncertain if PA interventions can reduce CRCI, and large-scale PA intervention trials explicitly designed to promote cognition are greatly needed.

Potential Benefits from Physical Exercise in Advanced Cancer Patients Undergoing Systemic Therapy? A Narrative Review of the Randomized Clinical Trials

DESIGN

The purpose of this review is the analysis of the literature concerning the effects of physical exercise in cancer patients undergoing medical oncologic treatment. Papers were retrieved from the scrutiny of 15 reviews/meta-analyses published in the last 2 years, which, however, pooled different populations of patients (surgical and medical patients, receiving or not an oncologic therapy, harboring a cancer, or being survivors).

RESULTS

We reviewed the data of 35 RCTs on the use of physical exercise in cancer patients, distinguishing well-nourished from malnourished patients. The conclusions of our study are the following: No major difference between well-nourished and malnourished patients as regards compliance/adherence with physical exercise and outcomes. Compliance with physical exercise was reported in about 70% of the studies. Compared with a control group receiving the usual care, in patients who practiced physical exercise, a benefit in some parameters of physical function and quality of life and lean body mass (LBM) was reported in 61%, 47%, and 12%, respectively, of the studies in non-malnourished patients, and in 50%, 100%, and 36%, respectively, of the studies in malnourished patients. The benefit in LBM was more frequently reported in weight-losing patients. There was no strict association among the results of different outcomes (muscle function vs. quality of life vs. LBM). There are still some ill-defined issues, including the optimal physical regimen (with some authors favoring high-intensity interval training and resistance) and the place of exercising (patients usually preferring home exercises, which, however, have been proved less efficacious).

The effectiveness of different non-pharmacological therapies on cancer-related fatigue in cancer patients:A network meta-analysis

BACKGROUND

Cancer-related fatigue is the most common symptom of subjective and persistent nature in cancer patients, which almost runs through the whole process of disease and treatment and rehabilitation, seriously affects the effect of anti-tumor treatment and reduces the quality of life of patients. Non-pharmacological management is one of the key links to relieve cancer-related fatigue, however, there are many types of non-pharmacological management and the related guidelines do not recommend the optimal nursing program for cancer-related fatigue. In our study, Network Meta-analysis was used to compare the effectiveness of different non-pharmacological therapies in Cancer-related fatigue to make their treatment and care more clinically valuable.

METHODS

Randomized controlled trials about non-pharmacological therapies for cancer-related fatigue were searched in Chinese and English databases including China National Knowledge Infrastructure, Wanfang Data Knowledge Service Platform, Chinese Scientific Journal database, Chinese Biomedical Database, Google Scholar, Pubmed, Web of science, Cochrane Library, Sci-Hub, ScienceDirect, and other relevant medical websites including Medlive and DingXiangYuan. The search time was from the establishment of the database to December 2023. The quality of the included Randomized controlled trials was evaluated by two trained researchers using the Cochrane Risk of Bias Assessment Tool, and data were independently extracted from the included literature and analyzed by reticulated Meta-analysis using Stata 18.0 statistical software.

RESULTS

A total of 49 studies with 24 non-drug management methods, and 3887 patients were included. The results of network meta-analysis showed that the use of massage therapy to improve cancer-related fatigue had a more significant advantage over conventional nursing measures and other non-pharmacological therapies in cancer patients, followed by infrared laser moxibustion and ginger-isolated moxibustion with traditional Chinese medicine characteristics, while the worst effect was strengthening excise.

CONCLUSIONS

The existing evidence shows that massage therapy has the best effect in the intervention of cancer-related fatigue. However, due to the diversity of non-pharmacological therapies and the small number of studies included in each therapy, the coverage of this study is insufficient, and more large-sample, multi-center and high-quality randomized controlled trials are needed for further verification in the future.

Resistance training for fatigue in people with cancer

BACKGROUND

Cancer-related fatigue (CRF) is one of the most common symptoms associated with cancer and its treatment. Different types of exercise have demonstrated beneficial effects on CRF. Previous evidence syntheses provided promising but inconclusive results when focusing on the effects of resistance training.

OBJECTIVES

To evaluate the effects of resistance training on CRF in people with cancer and, specifically, to compare the effects of resistance training with no training on CRF at: different periods of treatment in relation to anticancer therapy (before, during, or after anticancer therapy); different periods of assessment (up to 12 weeks after the intervention, between more than 12 weeks and less than six months after the intervention, or six months or longer after the intervention). Moreover, we wanted to compare the effects of resistance training with no training on quality of life (QoL), adverse events, depression, and anxiety.

SEARCH METHODS

We performed an extensive literature search in eight databases including CENTRAL, Medline, and Embase in October 2023. We searched trial registries for ongoing studies, and we integrated results from update searches of previously published Cochrane reviews.

SELECTION CRITERIA

We included randomised controlled trials (RCTs) that compared resistance training with no training in adults with any type of cancer who received resistance training initiated before, during, or after anticancer therapy. Eligible RCTs needed to evaluate CRF or QoL. Resistance training had to be structured, last for at least five sessions, and include face-to-face instruction. We excluded studies that randomised fewer than 20 participants per group.

DATA COLLECTION AND ANALYSIS

We used standard Cochrane methodology. For analyses, we pooled short-term, medium-term, and long-term effects (i.e. up to 12 weeks, between more than 12 weeks and less than six months, and six months or longer, after the intervention). We assessed risk of bias and certainty of the evidence using Cochrane's risk of bias tool (RoB 1), and the GRADE approach, respectively.

MAIN RESULTS

We included 21 RCTs with a total of 2221 participants, with diverse types of cancer, who received resistance training initiated during (14 studies), or after (7 studies) anticancer therapy. None of the studies investigated the effects of resistance training initiated before anticancer therapy. Here, we present the results on CRF, QoL, and adverse events. Results on depression and anxiety are reported in the full review. Resistance training during anticancer therapy Resistance training probably has a beneficial effect compared with no training on short-term CRF (mean difference (MD) on Functional Assessment of Chronic Illness Therapy - Fatigue scale (FACIT-Fatigue) 3.90, 95% confidence interval (CI) 1.30 to 6.51; scale from 0 to 52, higher values mean better outcome, minimal important difference (MID) 3; 12 RCTs, 1120 participants; moderate-certainty evidence). The evidence is very uncertain about the effect of resistance training compared with no training on medium-term CRF (MD on Multidimensional Fatigue Inventory -8.33, 95% CI -18.34 to 1.68; scale from 20 to 100, higher values mean worse outcome, MID 11.5; 1 RCT, 47 participants; very low-certainty evidence). The evidence is very uncertain about the effect of resistance training compared with no training on long-term CRF (MD on FACIT-Fatigue -0.70, 95% CI -4.16 to 2.76; 1 RCT, 133 participants; very low-certainty evidence). Resistance training may have a small beneficial effect compared with no training on short-term QoL (MD on EORTC QoL Questionnaire C30 - global health (QLQ-C30) 4.93, 95% CI 2.01 to 7.85; scale from 0 to 100, higher values mean better outcome, MID 10; 12 RCTs, 1117 participants; low-certainty evidence). The evidence is very uncertain about the effect of resistance training compared with no training on medium-term QoL (MD on QLQ-C30 6.48, 95% CI -4.64 to 17.60; 1 RCT, 42 participants; very low-certainty evidence). The evidence is very uncertain about the effect of resistance training compared with no training on long-term QoL (MD on Functional Assessment of Cancer Therapy - Anemia (FACT-An) 0.50, 95% CI -8.46 to 9.46; scale from 0 to 188; higher values mean better outcome, MID 7; 1 RCT, 133 participants; very low-certainty evidence). Only two RCTs (116 participants) reported data on adverse events for both the resistance training and the control arm. The evidence is very uncertain about the effect of resistance training compared with no training on the occurrence of adverse events (very low-certainty evidence). Resistance training after anticancer therapy The evidence is very uncertain about the effect of resistance training compared with no training on short-term CRF (MD on Chalder Fatigue Scale -0.27, 95% CI -2.11 to 1.57; scale from 0 to 33, higher values mean worse outcome, MID 2.3; 3 RCTs, 174 participants; very low-certainty evidence). Resistance training may have a small beneficial effect or no effect compared with no training on short-term QoL (MD on QLQ-C30 3.87, 95% CI -1.22 to 8.97; 4 RCTs, 243 participants; low-certainty evidence). None of the studies reported data on medium-, or long-term effects on CRF or QoL. Only three RCTs (238 participants) reported data on adverse events for both the resistance training and the control arm. The evidence is very uncertain about the effect of resistance training compared with no training on the occurrence of adverse events (very low-certainty evidence).

AUTHORS' CONCLUSIONS

Our review demonstrates beneficial effects of resistance training during anticancer therapy compared with no training on short-term CRF and QoL for people with cancer. Resistance training after anticancer therapy may also have a small beneficial effect on short-term QoL. Data on medium-, and long-term effects are sparse. In order to facilitate evidence syntheses beyond a narrative report of the data, investigators of resistance training programmes should report adverse events more consistently and completely for all study arms, including control groups.

Impact of resistance training on fatigue among breast cancer patients undergoing chemotherapy: a systematic review and meta-analysis

PURPOSE

The effects of aerobic exercise interventions for reducing fatigue after cancer treatment are well-established, and the effect of resistance training remains uncertain. Therefore, this systematic review and meta-analysis aim to analyze the effect of resistance training and combined resistance and endurance training on cancer-related fatigue (CRF) in breast cancer patients.

METHODS

A systematic search for randomized controlled trials (RCTs) was conducted on the PubMed, SPORTDiscus, Embase, and Cochrane databases, focusing on the effect of supervised resistance training and combined supervised resistance and endurance training on CRF. Random-effect models were employed for calculating the standardized mean difference (SMD). Risk of bias was assessed with risk of bias 2 (RoB2), and certainty of evidence was judged according to the GRADE approach.

RESULTS

A total of 9 RCTs with 1512 participants were included, and data from 866 participants in 8 RCTs were used for the meta-analysis. The risk of bias was deemed low in seven studies, while one study exhibited attrition bias, and one showed possible selection bias. Resistance training probably reduce the total fatigue (SMD= -0.30, 95% CI -0.52, -0.08, p=0.008), with individual studies showing small effects on physical and emotional CRF. A combined resistance and endurance training reduce total fatigue (SMD= -0.34, 95% CI -0.51, -0.17, p= 0.0001), with individual studies indicating moderate effects on physical fatigue, in daily life fatigue, and small effects on emotional and cognitive CRF.

CONCLUSION

Both supervised resistance training and combined resistance and endurance training have a small effect on total CRF. There is a trend towards an influence of intensity, with higher intensity potentially resulting in lower total CRF.

Comparative Effects of Exercise Interventions and Mindfulness-Based Interventions for Cognitive Impairment and Quality of Life in Breast Cancer Survivors During or After Cancer Treatment: A Systematic Review and Bayesian Network Meta-analysis

OBJECTIVE

The aim of this network meta-analysis was to compare the improvement effects of various exercise interventions and mindfulness-based interventions to determine the best interventions for the improvement of cognitive impairment.

DESIGN

Seven databases were searched to screen randomized controlled trials of exercise interventions and mindfulness-based interventions to improve cognitive impairment. The network meta-analysis was performed using Revman 5.3, R 4.2.1 and ADDIS 1.16.8 software.

RESULTS

Thirty-four randomized controlled trials involving 14 interventions were included in the study. In terms of cognitive function, except for mindfulness-based stress reduction, all interventions showed significantly greater improvement in cognitive function compared with conventional therapy. Physical activity and Qigong showed better effect in improving executive function. In terms of improving verbal memory, compensatory cognitive training, neurofeedback training, Qigong, and sham Qigong were more effective than other interventions. On performing surface under the cumulative ranking curve analysis, acceptance and commitment therapy, neurofeedback training, Qigong, and mediation had the best effects on cognitive function, quality of life, executive function, and processing speed, respectively.

CONCLUSIONS

Mindfulness-based interventions were found to be more effective than exercise interventions for alleviating cognitive impairment. More robust randomized controlled trials focusing on acceptance and commitment therapy for cognitive impairment are required to support the current evidence.

Relationship between nausea and vomiting and physical activity in patients with lung cancer undergoing first chemotherapy

Objective

Nausea and vomiting are the distressing and debilitating side effects of chemotherapy. This study explores the relationship between the degree of nausea and vomiting and physical activity in patients with lung cancer during the first chemotherapy cycle.

Design

A total of 107 patients with lung cancer who received platinum drugs during chemotherapy in a hospital in Shanghai, China, in 2023 were involved in this study. Data were collected with medical record system and self-reported questionnaires.Questionnaires included the International Physical Activity Questionnaire (IPAQ) and Index of Nausea, Vomiting, and Retching (INVR). IPAQ was used before chemotherapy; INVR was used on the second and sixth day of chemotherapy, followed by the analysis of the correlation between physical activity status and degree of nausea and vomiting during chemotherapy. The influencing factors of nausea and vomiting during chemotherapy in patients with lung cancer were analyzed using logistic regression analysis.

Results

More than half of the patients experienced nausea, vomiting or retching related symptoms after chemotherapy, and the proportion of moderate to high physical activity was 50.5%. Univariate analysis showed that the degree of nausea and vomiting was influenced by factors such as age, gender, and history of drinking (P < 0.05). The degree of nausea and vomiting was negatively correlated with physical activity (P < 0.05). The multivariate linear analysis showed that gender, history of drinking, and moderate and high physical activity are contributing factors to nausea and vomiting during chemotherapy (P < 0.05).

Conclusion

Moderate and high physical activity before chemotherapy is a protective factor for nausea and vomiting in patients with lung cancer. Physical activity can not only improve the degree of nausea and vomiting in patients with lung cancer but also reduce the incidence in these patients during the first chemotherapy cycle.

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.

Effects of concurrent aerobic and strength training in women diagnosed with non-metastatic breast cancer: a systematic review and meta-analysis

PURPOSE

To investigate the potential impact of concurrent aerobic and strength training (CT) on women diagnosed with breast cancer.

METHODS

Articles published in English and indexed in the PubMed, Web of Science, SPORTDiscus, The Cochrane Library, PsycINFO, EMBASE, and CINAHL Plus databases from their inception to 12 December 2023 were searched. Eligible studies were randomized controlled trials that involved CT and assessed cardiorespiratory fitness, cancer-related fatigue, and quality of life (QoL) using specialized tools. Subgroup analyses were conducted as per treatment status and characteristics. Risk of bias was evaluated with the Cochrane risk-of-bias tool (RoB 2.0).

RESULTS

This study included 29 studies involving 2071 participants. CT was found to significantly improve patients' cardiorespiratory fitness (weighted mean difference = 4.24 mL/kg/min, 95% confidence interval (CI) = 1.93-6.55, P < 0.001), cancer-related fatigue (standardized mean difference (SMD) =  - 0.74, 95% CI =  - 1.05 to - 0.44, P < 0.001), and QoL (SMD = 0.76, 95% CI = 0.50-1.01, P < 0.001). The analysis of secondary outcomes found that CT could significantly improve patients' body composition, anxiety, pain, sleep disorders, and anorexia and enhance upper and lower limb muscle strength, but was ineffective on depression.

CONCLUSION

For women with breast cancer, CT significantly enhances cardiorespiratory fitness, alleviates cancer-related fatigue, and improves QoL. The health benefits of CT are inferior in the postmenopausal cohort compared to the overall study population.

IMPLICATIONS FOR CANCER SURVIVORS

CT is advisable for female breast cancer survivors due to its significant effectiveness in mitigating cancer-related fatigue, enhancing cardiorespiratory fitness, and improving the QoL.

Five-year follow-up of the OptiTrain trial on concurrent resistance and high-intensity interval training during chemotherapy for patients with breast cancer

The protocol predefined aim of this study is to assess sustained effects of the OptiTrain trial on several health outcomes, 5 years after the baseline assessment. The OptiTrain study was a prospective, randomised controlled trial with 240 patients with breast cancer undergoing adjuvant chemotherapy that compared the effects of 16 weeks of two exercise programs, RT-HIIT and AT-HIIT, with usual care (UC). After a 5-year follow-up, eligible participants were evaluated for the primary outcome of cancer-related fatigue (CRF) and secondary outcomes including quality of life, symptoms, muscle strength, cardiorespiratory fitness, body mass, physical activity, and sedentary behavior. Statistical analysis was conducted using linear mixed models adjusted for baseline values. Tumour profile and menopausal status were additionally adjusted for CRF. Mean differences (MD), 95% confidence intervals (CIs), and standardized effect sizes (ES) were reported. At the 5-year follow-up, there were no statistically significant differences in total CRF between the intervention groups and the UC group. RT-HIIT reported significantly reduced pain sensitivity at the gluteus MD = 79.00 (95% CI 10.17, 147.83, ES = 0.55) compared to UC. Clinically meaningful differences for an increase in cognitive CRF and cardiorespiratory fitness were observed for the AT-HIIT versus UC group, and for lower limb strength for the RT-HIIT versus UC group, albeit without statistical significance. Engaging in targeted exercise during adjuvant chemotherapy for breast cancer provides short-term benefits in reducing fatigue and maintaining physical function. However, our 5-year follow-up indicates that these effects are limited in the long term. This underscores the need to support breast cancer survivors maintain their PA levels throughout their survivorship journey.

Social Representativeness and Intervention Adherence-A Systematic Review of Clinical Physical Activity Trials in Breast Cancer Patients

Objectives

Representativeness in physical activity randomised controlled trials (RCT) in breast cancer patients is essential to analyses of feasibility and validity considering privileged- social groups. A step-by-step exclusion of less privileged groups through the trial process could reinforce health inequality. This study aimed at examining representativeness in breast cancer (BC) physical activity trials, investigate associations between socio-economic status (SES) and intervention adherence, and explore associations between representativeness and the relationship between SES and intervention adherence.

Methods

Systematic, computerised searches were performed in PubMed, CINAHL, AMED, EMBASE and PsycINFO. Additional citation-based searches retrieved 37 articles. Distributions of education level, ethnicity, and marital status in study samples were compared to national populations data to estimate representativeness in less privileged groups.

Results

A preponderance of studies favoured educated, married and white patients. Only six studies reported SES-adherence associations, hampering conclusions on this relationship and possible associations between representativeness and an SES-adherence relationship.

Conclusion

Less educated, unmarried and non-white individuals may be underrepresented in BC physical activity RCTs, while SES-adherence associations in such trials are inconclusive. Unintentional social misrepresentations may indicate that disguised inequity warrants revived attention.

Effects of different exercise interventions on chemotherapy-related cognitive impairment in patients with breast cancer: a study protocol for systematic review and network meta-analysis

INTRODUCTION

Breast cancer stands as the most prevalent type of cancer affecting women globally, and chemotherapy plays a pivotal role in its treatment by diminishing tumour recurrence and enhancing the survival rates of patients. However, chemotherapy-related cognitive impairment (CRCI) often occurs in patients undergoing treatment. Although multiple clinical trials have indicated that exercise therapy can improve CRCI in patients with breast cancer, there are variations in the types of exercise interventions and their effectiveness. We aim to perform a pioneering network meta-analysis (NMA) to assess and prioritise the effectiveness of various exercise interventions in enhancing cognitive function in patients with breast cancer undergoing chemotherapy.

METHODS AND ANALYSIS

We will search multiple databases, including PubMed, Web of Science, Cochrane, Embase, China National Knowledge Infrastructure, VIP Database for Chinese Technical Periodicals, Wanfang and Sinomed databases, from their inception to May 2023. The main outcome is the cognitive function changes in patients with breast cancer, including subjective and objective results. We will specifically include randomised controlled trials reported in English and Chinese languages, whose primary outcome consists of an assessment of the cognitive function of patients with breast cancer using standardised and validated assessment tools, encompassing both subjective and objective outcomes. The quality of all the trials included will be evaluated based on 'Version 2 of the Cochrane tool for assessing the risk of bias in randomized controlled trials (RoB2)'. We will conduct a Bayesian NMA to thoroughly evaluate and compare the effectiveness of different exercise interventions. We will use cumulative ranking probability plots to estimate the ranking of the best interventions for various exercises. Network plots and funnel plots will be employed to display the study sizes and participants of each exercise intervention, as well as potential publication biases.

ETHICS AND DISSEMINATION

The study findings will be shared via peer-reviewed journals to ensure the highest quality and credibility of the research. As the reporting will not include any private patient data, there are no ethical considerations associated with this protocol.

PROSPERO REGISTRATION NUMBER

CRD42023406597.

A Feasibility Randomized Controlled Trial of Prehabilitation During Neoadjuvant Chemotherapy for Women with Breast Cancer: A Mixed Methods Study

BACKGROUND

Limited data exist regarding the role of multimodal prehabilitation during neoadjuvant chemotherapy (NACT) for breast cancer. Determining large trial feasibility and identifying signals of prehabilitation benefit are needed.

PATIENTS AND METHODS

We conducted a randomized controlled feasibility trial of multimodal prehabilitation versus usual care during NACT among women diagnosed with non-metastatic breast cancer. Intervention participants received an individualized exercise program, dietetic support, and stress management counseling during NACT. The trial assessed feasibility via rates of recruitment, attrition, adherence, and study-related adverse events. Physical fitness (Six Minute Walk Test, grip strength, anthropometrics) and patient-reported outcomes were assessed at baseline, after NACT completion, and 6 months after surgery as exploratory outcomes, and analyzed using linear mixed effects models. Qualitative data were collected from a subsample to understand feasibility and acceptability of prehabilitation.

RESULTS

A total of 72 participants were enrolled from the 123 eligible patients (recruitment rate of 53%). There was a 13% attrition rate and no intervention-related adverse events. Participants in the prehabilitation group had better 6-min walk distance at the post-chemotherapy timepoint [between group difference of 49.43 m, 95% confidence interval (CI) - 118.1, 19.2] and at the post-surgery timepoint (27.3, 95% CI -96.8, 42.2) compared with the control group. Prehabilitation participants reported better quality of life, less fatigue, and improved physical activity levels compared with usual care participants. Interviews revealed that the intervention had a positive impact on the treatment experience.

CONCLUSIONS

This study demonstrated feasibility and improvement in physical and psychosocial outcomes. Larger trials assessing intervention efficacy to confirm indications of prehabilitation benefit are warranted.

Exercise Training Benefits Health-Related Quality of Life and Functional Capacity during Breast Cancer Chemotherapy: A Randomized Controlled Trial

PURPOSE

To examine the effectiveness of a supervised exercise training program (SETP) on health-related quality of life (HRQoL) and functional capacity in women with breast cancer (BC) undergoing chemotherapy.

METHODS

Ninety-three women with early-stage BC were randomly allocated to a SETP plus usual care (exercise, n = 47) or usual care alone (UC, n = 46). The SETP included three sessions per week, combining aerobic and resistance training, conducted concurrently over the chemotherapy. The EORTC Cancer Quality-of-Life-Questionnaire-Core-30 (QLQ-C30) and the BC-specific module (QLQ-BR23) were used to assess HRQoL. Functional capacity was analyzed by maximum voluntary handgrip strength (MVHS) and by the 30-s chair sit-to-stand test (30-s CST). These endpoints were assessed at baseline (t0); middle (t1; after 8 or 12 wk of t0); and at the end of chemotherapy (t2; after 20 wk of t0). Mean changes from baseline were assessed by an intention-to-treat approach.

RESULTS

Mixed linear model analyses showed that Exercise group experienced less deterioration in several domains of QLQ-C30 at t2, including in global health status/QoL (Δ = 9.39 units; P = 0.034), QLQ-C30 summary score (Δ = 8.08 units; P < 0.001), physical (Δ = 15.14 units; P < 0.001), role ( Δ = 21.81 units; P < 0.001), cognitive (Δ = 9.16 units; P = 0.032) and social functioning (Δ = 11.67 units; P = 0.038), compared with the UC group. Similarly, Exercise group exhibited significant lower levels of fatigue (Δ = -20.19 units; P < 0.001) and appetite loss (Δ = -13.69 units; P = 0.034), compared with the UC group. Significant between-group differences were observed on MVHS of the tumor/surgery upper limb side (Δ = 2.64 kg; P < 0.001) and contralateral limb (Δ = 2.22 kg; P < 0.001), and on the 30-s CST score (Δ = 3.56repetitions; P < 0.001), favoring the Exercise group. No differences were observed on QLQ-BR23 domains.

CONCLUSIONS

Exercise training was an effective complementary therapy to prevent the deterioration of HRQoL and functional capacity during chemotherapy in women with early-stage BC.

Feasibility metrics of exercise interventions during chemotherapy: A systematic review

BACKGROUND

Exercise has been shown to play an important role in managing chemotherapy-related side effects, preserving skeletal muscle mass, and attenuating decline in cardiorespiratory fitness associated with chemotherapy treatment, however, the feasibility of how these exercise programs are being delivered has yet to be synthesized. The objective of this review was to measure the rates of recruitment, adherence, and retention to exercise programs delivered for cancer patients during chemotherapy.

METHODS

Relevant studies were identified through a search of MEDLINE, Cochrane, EMBASE and CINAHL databases from January 2002 to July 2022 using keywords relating to exercise interventions during chemotherapy. Title and abstract screening, full text review, data extraction, and quality assessment were all performed independently by two reviewers.

RESULTS

A total of 36 studies were included in the review. The mean recruitment rate for the included studies was 62.39% (SD = 19.40; range 25.7-95%). Travel was the most common reason for declining recruitment in these trials. Adherence rates ranged from 17-109%, however the definition of adherence varied greatly between studies. Mean retention rates for the exercise groups was 84.1% (SD = 12.7; range 50-100%), with chemotherapy side effects being the most common reason why participants dropped out of these trials.

CONCLUSION

Multiple challenges exist for cancer patients during chemotherapy and careful consideration needs to be given when designing an exercise program for this population. Future research should include public and patient involvement to ensure exercise programs are pragmatic and patient centred.

Assessment of Integrative Therapeutic Methods for Improving the Quality of Life and Functioning in Cancer Patients-A Systematic Review

Background: Cancer rehabilitation represents a series of measures adopted for the recovery of psychological, emotional, social, and financial functioning in the case of cancer patients. The purpose of this study is to identify the main elements of therapeutic management in the field of medical rehabilitation, as well as integrative, complementary medicine and holistic approaches that can be performed on the oncological patient. Methods: This systematic literature review follows the methodology outlined in the "Preferred Reporting Items for Systematic Reviews and Meta-Analysis" ("PRISMA") statement, which is an internationally recognized and widely accepted standard. Results: Active rehabilitative therapies offer therapeutic options for improving the functioning and quality of life of oncological patients; these therapies comprehensively address both the physical and psychological aspects of the disease. This review also includes the latest novelties and nanotechnologies applied in oncological rehabilitation, for example, drugs (or supplements) inspired by nature. Conclusions: Physical and rehabilitation medicine, mostly using stimulating therapeutic methods, was recently added to the list of contraindications in the management of oncological patients, both as an approach to the pathological concept itself and as an approach to the main clinical consequences and functional aspects of oncological therapies. Integrative, complementary medicine presents an important therapeutic resource in the case of oncological patients. Advanced studies are needed in the future to further ascertain the role of these therapies.

Various interventions for cancer-related fatigue in patients with breast cancer: a systematic review and network meta-analysis

Purpose

To investigate the effects of various intervention approaches on cancer-related fatigue (CRF) in patients with breast cancer.

Method

Computer searches were conducted on PubMed, Embase, Cochrane Library, Web of Science, China National Knowledge Infrastructure (CNKI), China Science and Technology Journal Database (VIP), and Wanfang databases from their establishment to June 2023. Selection was made using inclusion and exclusion criteria, and 77 articles were included to compare the effects of 12 interventions on patients with breast cancer.

Results

Seventy-seven studies with 12 various interventions were examined. The network findings indicated that cognitive behavioral therapy (CBT) (SMD, -1.56; 95%CI, -3.08~-0.04), Chinese traditional exercises (CTE) (SMD, -0.85; 95%CI, -1.34~-0.36), aerobic exercise (AE) (SMD, -0.77; 95%CI, -1.09~-0.45), multimodal exercise (ME) (SMD, -0.75; 95%CI, -1.26~-0.25), music interventions (MI) (SMD, -0.74; 95%CI, -1.45~-0.03), and yoga (YG) (SMD, -0.44; 95%CI, -0.83 to -0.06) can reduce CRF more than the control group (CG). For relaxation exercises (RE) (MD, -6.69; 95%CI, -9.81~-3.57), MI (MD, -5.45; 95%CI, -7.98~-2.92), AE (MD, -4.34; 95%CI, -5.90~-2.78), ME (MD, -3.47; 95%CI, -4.95~-1.99), YG (MD, -2.07; 95%CI, -3.56~-0.57), and mindfulness training (MD, -1.68; 95%CI, -2.91~-0.46), PSQI improvement was superior to CG. In addition, for CTE (MD, 11.39; 95%CI, 4.11-18.66), YG (MD, 11.28; 95%CI, 1.63-20.93), and AE (MD, 9.34; 95%CI, 0.26~18.42), Functional Assessment of Cancer Therapy-Breast improvement was superior to CG.

Conclusion

Cognitive behavioral therapy (CBT) is the most effective measure for alleviating CRF in patients with breast cancer and Relaxation exercises (RE) is the most effective measure for improving sleep quality. In addition, Chinese traditional exercises (CTE) is the best measure for enhancing quality of life. Additional randomized controlled trials (RCTs) are expected to further investigate the efficacy and mechanisms of these interventions.

Systematic review registration

https://www.crd.york.ac.uk/prospero/, identifier CRD42023471574.

Physical activity and pain in people with cancer: a systematic review and meta-analysis

PURPOSE

Physical activity can provide analgesic benefit but its effect on cancer-related pain is unclear. This review synthesised and appraised the evidence for the effect of physical activity on pain in people living with or beyond cancer.

METHODS

A systematic search of Ovid Medline and Embase was performed to identify randomised controlled trials (RCTs), randomised cross-over studies (RXTs), and prospective observational studies that examined physical activity and pain outcomes in adults living with or beyond cancer. Meta-analyses were performed to generate effect estimates. Risk of bias was assessed, and the GRADE system was used to assess evidence quality.

RESULTS

One hundred twenty-one studies (n = 13,806), including 102 RCTs, 6 RXTs, and 13 observational studies, met the criteria for inclusion. Meta-analyses of RCTs identified a decrease in pain intensity (n = 3734; standardised mean difference (SMD) - 0.30; 95% confidence interval (CI) - 0.45, - 0.15) and bodily pain (n = 1170; SMD 0.28; 95% CI 0.01, 0.56) but not pain interference (n = 207; SMD - 0.13, 95% CI - 0.42, 0.15) following physical activity interventions. Individual studies also identified a reduction in pain sensitivity but not analgesic use, although meta-analysis was not possible for these outcomes. High heterogeneity between studies, low certainty in some effect estimates, and possible publication bias meant that evidence quality was graded as very low to low.

CONCLUSION

Physical activity may decrease pain in people living with and beyond cancer; however, high heterogeneity limits the ability to generalise this finding to all people with cancer or to specific types of cancer-related pain.

The Effect of High-Intensity Interval Training on Quality of Life and Incidence of Chemotherapy Side Effects in Women With Breast Cancer

Women with breast cancer (BC) experience multiple symptoms related to neoadjuvant chemotherapy (NAC) treatment that impair their functioning and quality of life (QoL). This study aimed to explore the effect of high-intensity aerobic interval training (HIIT) on quality of life and NAC side effects in women with BC.

METHODS

56 patients (48.56 (7.84) years, range 35-64 years) diagnosed locally advanced (stage II-III) ER + BC receiving doxorubicin/cyclophosphamide-based NAC were randomly assigned to the HIIT group and a control group (CG) for 6 months. The HIIT group performed 2 to 3 HIIT sessions per week according to the study protocol (4 × 4 minutes at 85%-95% peak heart rate (HR)). The CG followed the standard of care instructions by the oncologists. To assess the QoL participants completed the EORTC QLQ-C30 with the additional BC module of QLQ BR-23. Weekly self-reports on NAC side effects were collected through online survey.

RESULTS

Study data were analyzed for 37 participants (nHIIT = 17, nCON = 20) who reported at least 14 (60%) weeks. HIIT was effective to reduce BC symptom scale outcomes (ES = 0.113, P = .048), and alleviate systemic therapy side effects (ES = 0.154, P = .020) and cancer related symptoms (ES = 0.124, P = .038). The most common side effect participants experienced at least 1 to 4 days/week was pain (average 50.9% and 56.8% for HIIT and CG, respectively), followed by sleep disturbances (average 50.9% and 49.9%, respectively). About 31% in both groups experienced sleep disturbances 5 to 7 days/week. The NAC induced physical, social and fatigue side effects had significantly lower incidence in HIIT group, while psychological side effects were significantly more common in training group.

CONCLUSIONS

HIIT is an effective physical exercise program to maintain higher quality of life and help to reduce some of NAC induced side effects for women with BC.

Measurement of Cognitive Function in Exercise Oncology Studies in Patients Treated With Chemotherapy: A Scoping Review

Cancer-associated cognitive deficits following chemotherapy have received increased attention in clinical research. Exercise has been shown to preserve cognitive function in cancer patients, though the overall effect is mixed. Here we present a scoping review of the published literature summarizing methods used to assess cognitive function in exercise oncology trials. Methods: PubMed, PsycINFO and CINAHL databases were searched using keywords "cognition," "cancer" OR "neoplasm" OR "tumor," "chemotherapy" and "exercise" OR "physical activity." Studies eligible for inclusion include prospective studies that were published in English in peer-reviewed journals that include a method of assessing cognitive function in adult cancer patients, in which an exercise modality or method of quantifying exercise habits was evident. Studies were excluded if they included a pediatric population, patients that were not diagnosed with cancer, or were systematic/narrative/scoping reviews, protocol papers or dissertation/theses. Results: A total of 29 studies met the inclusion criteria. In total, 29 unique assessments were used to evaluate cognitive function, including patient-reported outcomes (PROs; n = 8) and objective (n = 21) methods. More than half (n = 17) of included studies relied on PROs while 12 studies utilized objective measures of cognitive function Cognitive domains of the PROs were limited in scope, focusing on memory and attention/concentration while the objective measures were broader and inclusive of multiple domains. Conclusion: The results of this review indicate that mixed approaches to evaluating cognitive function in cancer patients pose a major limitation to understanding the role of exercise as an integrative approach. The evidence demonstrates a need for more uniform assessment of cognitive function in exercise oncology trials.

Effect of Exercise Therapy on Cancer-Related Fatigue in Patients With Breast Cancer: A Systematic Review and Network Meta-analysis

OBJECTIVE

This study aimed to explore the efficacy of different exercise therapies in reducing fatigue in patients with breast cancer.

DESIGN

PubMed, Embase, Web of Science, Cochrane Library, Cumulative Index to Nursing and Allied Health Literature, China Biology Medicine, China National Knowledge Infrastructure, Database of Chinese Sci-tech Periodicals, and Wanfang databases were searched from their inception to March 2022. The authors independently screened all randomized controlled trials of exercise therapy in patients with breast cancer. A network meta-analysis was performed using Stata 16.0 software.

RESULTS

Seventy-eight studies were analyzed, with 167 comparisons and 6235 patients. The network results showed that stretching (standardized mean difference = -0.74, confidence interval = -1.43 to -0.06), yoga (standardized mean difference = -0.49, confidence interval = -0.75 to -0.22), combined exercise (standardized mean difference = -0.47, confidence interval = -0.70 to -0.24), aerobic exercise (standardized mean difference = -0.46, confidence interval = -0.66 to -0.26), and resistance exercise (standardized mean difference = -0.42, confidence interval = -0.77 to -0.08) significantly reduced fatigue. Pairwise comparisons confirmed that yoga, combined exercise, aerobic exercise, and resistance exercise were positively associated with fatigue relief. However, no significant association was identified between reduced fatigue and traditional Chinese exercises or stretching.

CONCLUSIONS

The most effective exercise therapy to relieve cancer-related fatigue in patients with breast cancer was yoga, followed by combined aerobic and resistance exercises. It is expected that more randomized controlled trials will be conducted to further explore the efficacy and mechanisms of exercise.

Rates of compliance and adherence to high-intensity interval training: a systematic review and Meta-analyses

BACKGROUND

To determine rates of compliance (i.e., supervised intervention attendance) and adherence (i.e., unsupervised physical activity completion) to high-intensity interval training (HIIT) among insufficiently active adults and adults with a medical condition, and determine whether compliance and adherence rates were different between HIIT and moderate-intensity continuous training (MICT).

METHODS

Articles on adults in a HIIT intervention and who were either insufficiently active or had a medical condition were included. MEDLINE, EMBASE, PsychINFO, SPORTDiscus, CINAHL, and Web of Science were searched. Article screening and data extraction were completed by two independent reviewers. Risk of bias was assessed using RoB 2.0 or ROBINS-I. Meta-analyses were conducted to discern differences in compliance and adherence between HIIT vs. MICT. Sensitivity analyses, publication bias, sub-group analyses, and quality appraisal were conducted for each meta-analysis.

RESULTS

One hundred eighty-eight unique studies were included (n = 8928 participants). Compliance to HIIT interventions averaged 89.4% (SD:11.8%), while adherence to HIIT averaged 63% (SD: 21.1%). Compliance and adherence to MICT averaged 92.5% (SD:10.6%) and 68.2% (SD:16.2%), respectively. Based on 65 studies included in the meta-analysis, compliance rates were not different between supervised HIIT and MICT interventions [Hedge's g = 0.015 (95%CI: - 0.088-0.118), p = .78]. Results were robust and low risk of publication bias was detected. No differences were detected based on sub-group analyses comparing medical conditions or risk of bias of studies. Quality of the evidence was rated as moderate over concerns in the directness of the evidence. Based on 10 studies, adherence rates were not different between unsupervised HIIT and MICT interventions [Hedge's g = - 0.313 (95%CI: - 0.681-0.056), p = .096]. Sub-group analysis points to differences in adherence rates dependent on the method of outcome measurement. Adherence results should be interpreted with caution due to very low quality of evidence.

CONCLUSIONS

Compliance to HIIT and MICT was high among insufficiently active adults and adults with a medical condition. Adherence to HIIT and MICT was relatively moderate, although there was high heterogeneity and very low quality of evidence. Further research should take into consideration exercise protocols employed, methods of outcome measurement, and measurement timepoints.

REGISTRATION

This review was registered in the PROSPERO database and given the identifier CRD42019103313.

Comparative effects of different types of exercise on health-related quality of life during and after active cancer treatment: A systematic review and network meta-analysis

BACKGROUND

The positive influence of most types of exercise has been reported repeatedly, but what the most effective exercise approaches are for improving health-related quality of life (HRQoL) in people with cancer remains unknown. The aim of this systematic review and network meta-analysis was to synthesize the evidence from intervention studies to assess the effects of different types of exercise on HRQoL during and after cancer treatment.

METHODS

MEDLINE, SPORTDiscus, the Cochrane Library, Web of Science, and Scopus were searched for randomized controlled trials aimed at testing the effects of exercise interventions meant to improve HRQoL in people with cancer. Separate analyses were conducted for HRQoL as measured by general and cancer-specific questionnaires. We also evaluated whether the effects of exercise were different during and after cancer treatment in both the physical and mental HRQoL domains.

RESULTS

In total, 93 studies involving 7435 people with cancer were included. Network effect size estimates comparing exercise intervention vs. usual care were significant for combined exercise (0.35, 95% confidence interval (95%CI): 0.14-0.56) for HRQoL as measured by general questionnaires, and for combined (0.31, 95%CI: 0.13-0.48), mind-body exercise (0.54, 95%CI: 0.18-0.89), and walking (0.39, 95%CI: 0.04-0.74) for HRQoL as measured by cancer-specific questionnaires.

CONCLUSION

Exercise programs combining aerobic and resistance training can be recommended to improve HRQoL during and after cancer treatment. The scarcity and heterogeneity of these studies prevents us from making recommendations about other exercise modalities due to insufficient evidence.

Clinical updates on the effects of high intensity interval training (HIIT) exercise in people diagnosed with cancer. A systematic review and meta-analysis

OBJECTIVES

To provide an updated critical evaluation on the effectiveness of high intensity interval training (HIIT) on health outcomes amongst cancer survivors.

DESIGN

Systematic review and meta-analysis.

METHODS

A systematic search was conducted using databases CINAHL and Medline (via EBSCOhost platform), Scopus, Web of Science Core Collection, and the Cochrane Central Register of Controlled Trials. Randomised, controlled, exercise trials involving cancer survivors were eligible. Data on the effects of HIIT amongst individuals diagnosed with cancer at any stage were included. Risk of bias was assessed with the Mixed Methods Appraisal Tool (MMAT). Standardised mean differences (SMD) were calculated to compare differences between exercise and usual care. Meta-analyses (including subgroup analyses) were undertaken on the primary outcome of interest, which was aerobic fitness. Secondary outcomes were fatigue, quality of life, physical function, muscle strength, pain, anxiety, depression, upper-body strength, lower-body strength, systolic and diastolic blood pressure.

RESULTS

Thirty-five trials from forty-seven publications were included, with intervention durations ranging between 4 and 18 weeks. Breast cancer participants were represented in the highest number of trials (n = 13, 37 %). Significant effects in favour of HIIT exercise for improving aerobic fitness, quality of life, pain and diastolic blood pressure were observed (SMD range: 0.25-0.58, all p < 0.01).

CONCLUSIONS

Participation in HIIT exercise was associated with higher retention and improvements in aerobic fitness, quality of life, pain and diastolic blood pressure. The present results provide updated contemporary evidence for clinicians (e.g., exercise physiologists and physiotherapists) to prescribe HIIT exercise for cancer survivors to improve health before, during and following treatment.

Effects of High-Intensity Interval Training and Combined High-Intensity Interval Training Programs on Cancer-Related Fatigue and Cancer Pain: A Systematic Review and Meta-analysis

PURPOSE

This systematic review and meta-analysis assessed the effectiveness of high-intensity interval training (HIIT) alone and combined HIIT programs compared with usual care on cancer-related fatigue (CRF) and pain related to cancer or cancer-related treatments.

METHODS

Articles published prior to January 2023 were searched in the following digital databases: PubMed, Cochrane Database of Systematic Reviews and Cochrane Controlled Clinical Trials (CENTRAL), Web of Science, Scopus and ScienceDirect. Randomized controlled trials were included that met the following criteria: (i) adult cancer patients and survivors (>18 yr old); (ii) HIIT or combined HIIT programs versus usual care; (iii) assessment of fatigue and pain. Cochrane tool was used for assessing Risk of Bias (RoB) and Review Manager (RevMan 5.2) was used for data analysis.

RESULTS

Based on limited number (12) of studies included, we found HIIT and combined HIIT interventions have significant effect sizes on reducing both CRF (standardized mean difference, 0.63; 95% confidence interval, 0.42-0.84; P < 0.001) and cancer-associated pain (standardized mean difference, 0.44; 95% confidence interval, 0.25-0.63; P < 0.001).

CONCLUSIONS

This systematic review and meta-analysis indicate that HIIT and combined HIIT programs can reduce CRF and pain.

High-intensity interval training in breast cancer patients: A systematic review and meta-analysis

BACKGROUND

Women with breast cancer and improved survival often experience treatment-related impairments. High-intensity interval training (HIIT) has emerged as a promising exercise therapy modality for adult cancer patients. However, the overall effects of HIIT in breast cancer patients remain scarce and controversial. Therefore, we conducted a systematic review and meta-analysis to comprehensively evaluate the impact of HIIT on health-related outcomes in breast cancer patients.

METHODS

We searched the PubMed, Embase, and Web of Science from inception to November 7, 2022. Eligible studies included randomized controlled trials that compared HIIT interventions with usual care (UC) or MICT in breast cancer patients. The primary outcome assessed was physical fitness, and exploratory outcomes included body composition, blood-borne biomarkers, and patient-reported outcomes. Summary data were extracted, and standardized mean differences (SMD) were calculated for meta-analysis. For outcomes that could not be pooled, a systematic review was conducted.

RESULTS

Our analysis included 19 articles from 10 studies, encompassing 532 participants who met the inclusion criteria. Pooled results demonstrated that HIIT was superior to UC in improving peak oxygen uptake (VO2peak ). The SMD for VO2peak (L/min) and VO2peak (mL/kg/min) was 0.79 (95% CI 0.13, 1.45) and 0.59 (95% CI 0.01, 1.16), respectively. No significant differences in VO2peak were found between the HIIT and MICT groups. Meta-analyses on body composition and blood-borne biomarkers showed no significant differences between HIIT and UC. Systematic review indicated favorable effects of HIIT on muscle strength, fatigue, and emotional well-being.

CONCLUSIONS

HIIT is a time-efficient alternative to MICT for improving VO2peak and may also enhance muscle strength and alleviate fatigue and emotional symptoms in breast cancer patients. HIIT should be considered as an important component of exercise prescription in breast cancer care. Further studies with larger cohorts are needed to determine the clinical significance of HIIT-induced changes in terms of other outcomes in women with breast cancer.

The Effect of Exercise on Pain in People with Cancer: A Systematic Review with Meta-analysis

INTRODUCTION

Cancer-related pain is common and undertreated. Exercise is known to have a pain-relieving effect in non-cancer pain.

OBJECTIVES

This systematic review aimed to evaluate (1) the effect of exercise on cancer-related pain in all cancers, and (2) whether the effect of exercise differed according to exercise mode, degree of supervision, intervention duration and timing (during or after cancer treatment), pain types, measurement tool and cancer type.

METHODS

Electronic searches were undertaken in six databases to identify exercise studies evaluating pain in people with cancer, published prior to 11 January 2023. All stages of screening and data extraction were conducted independently by two authors. The Cochrane risk of bias tool for randomised trials (RoB 2) was used and overall strength of evidence was assessed using the GRADE approach. Meta-analyses were performed overall and by study design, exercise intervention and pain characteristics.

RESULTS

In total, 71 studies reported in 74 papers were eligible for inclusion. The overall meta-analysis included 5877 participants and showed reductions in pain favouring exercise (standardised mean difference - 0.45; 95% confidence interval - 0.62, - 0.28). For most (> 82%) of the subgroup analyses, the direction of effect favoured exercise compared with usual care, with effect sizes ranging from small to large (median effect size - 0.35; range - 0.03 to - 1.17). The overall strength of evidence for the effect of exercise on cancer-related pain was very low.

CONCLUSION

The findings provide support that exercise participation does not worsen cancer-related pain and that it may be beneficial. Better pain categorisation and inclusion of more diverse cancer populations in future research would improve understanding of the extent of benefit and to whom.

PROSPERO REGISTRATION NUMBER

CRD42021266826.

Neo-train: study protocol and feasibility results for a two-arm randomized controlled trial investigating the effect of supervised exercise during neoadjuvant chemotherapy on tumour response in patients with breast cancer

BACKGROUND

Prehabilitation with exercise interventions during neoadjuvant chemotherapy (NACT) is effective in reducing physical and psychosocial chemotherapy-related adverse events in patients with cancer. In preclinical studies, data also support a growth inhibitory effect of aerobic exercise on the tumour microenvironment with possible improved chemotherapy delivery but evidence in human patients is limited. The aim of the study here described is to investigate if supervised exercise with high-intensity aerobic and resistance training during NACT can improve tumour reduction in patients with breast cancer.

METHODS

This parallel two-armed randomized controlled trial is planned to include 120 women aged ≥ 18 years with newly diagnosed breast cancer starting standard NACT at a university hospital in Denmark (a total of 90 participants needed according to the power calculation and allowing 25% (n = 30) dropout). The participants will be randomized to usual care or supervised exercise consisting of high-intensity interval training on a stationary exercise bike and machine-based progressive resistance training offered three times a week for 24 weeks during NACT, and screening-based advice to seek counselling in case of moderate-severe psychological distress (Neo-Train program). The primary outcome is tumour size change (maximum diameter of the largest lesion in millimetre) measured by magnetic resonance imaging prior to surgery. Secondary outcomes include clinical/pathological, physical and patient-reported measures such as relative dose intensity of NACT, hospital admissions, body composition, physical fitness, muscle strength, health-related quality of life, general anxiety, depression, and biological measures such as intratumoural vascularity, tumour infiltrating lymphocytes, circulating tumour DNA and blood chemistry. Outcomes will be measured at baseline (one week before to 1-2 weeks after starting NACT), during NACT (approximately week 7, 13 and 19), pre-surgery (approximately week 21-29), at surgery (approximately week 21-30) and 3 months post-surgery (approximately 33-42 weeks from baseline).

DISCUSSION

This study will provide novel and important data on the potential benefits of supervised aerobic and resistance exercise concomitant to NACT on tumour response and the tumour microenvironment in patients with breast cancer, with potential importance for survival and risk of recurrence. If effective, our study may help increase focus of exercise as an active part of the neoadjuvant treatment strategy.

TRIAL REGISTRATION

The trial was registered at ClinicalTrials.gov (NCT04623554) on November 10, 2020.

Effectiveness of Therapeutic Exercise Models on Cancer-Related Fatigue in Patients With Cancer Undergoing Chemotherapy: A Systematic Review and Network Meta-analysis

OBJECTIVE

To assess and compare the effectiveness of different exercise modalities in reducing cancer-related fatigue (CRF) in patients with cancer undergoing chemotherapy. Exercise intensities for selected exercise types were also compared.

DATA SOURCES

We conducted a search in MEDLINE, Embase, CINAHL, Scopus, SPORTDiscus, and Web of Science from inception to October 15, 2021.

STUDY SELECTION

Randomized controlled trials concerning the effectiveness of exercise modalities on CRF in patients with cancer undergoing chemotherapy were included.

DATA EXTRACTION

Study characteristics were extracted using a structured protocol. Methodological quality was assessed employing the PEDro scale and risk of bias was assessed using the Revised Cochrane Risk of Bias Tool for Randomized Trials. The certainty of evidence was assessed based on Grading of Recommendations, Assessment, Development and Evaluation. The measure of effect used was the adjusted standardized mean difference (SMD) or Hedge's g, together with the corresponding 95% confidence intervals (CI).

DATA SYNTHESIS

Forty-seven studies were included. Data were pooled employing a random-effects model. There was a trend that adding low-intensity aerobic and resistance exercise (SMD=1.28, 95% CI -0.18; 2.75, P=.086), or moderate-intensity aerobic and resistance exercise (SMD=0.85; 95% CI -0.12; 1.82, P=.087), was more effective than adding flexibility training to usual care (UC). There was also a trend that UC alone was less effective than adding moderate-intensity aerobic and resistance exercise (SMD=-0.47, 95% CI -0.96, 0.02, P=.060) to UC.

CONCLUSIONS

The addition of low- to moderate-intensity aerobic and/or resistance exercise demonstrated a positive trend for improvement in CRF in patients with cancer undergoing chemotherapy, when compared with UC alone or UC with flexibility training.

Exercise improves the outcome of anticancer treatment with ultrasound-hyperthermia-enhanced nanochemotherapy and autophagy inhibitor

It has been shown that exercise has a direct impact on tumor growth along with functional improvement. Previous studies have shown that exercise decreases the risk of cancer recurrence across various types of cancer. It was indicated that exercise stimulates the immune system to fight cancer. Previous study demonstrated that pulsed-wave ultrasound hyperthermia (pUH) combined with PEGylated liposomal doxorubicin (PLD) and chloroquine (CQ) inhibits 4T1 tumors growth and delays their recurrence. In this study, we investigated if the combinatorial treatment with high-intensity interval training (HIIT) combined with pUH-enhanced PLD delivery and CQ improved the outcome. The mouse experiment composed of three groups, HIIT+PLD+pUH+CQ group, PLD+pUH+CQ group, and the control group. HIIT+PLD+pUH+CQ group received 6 weeks of HIIT (15 min per day, 5 days per week) before 4T1 tumor implantation. Seven days later, they received therapy with PLD (10 mg/kg) + pUH (3 MHz, 50% duty cycle, 0.65 W/cm2, 15min) + CQ (50 mg/kg daily). Results showed that HIIT+PLD+pUH+CQ significantly reduced the tumor volumes and brought about longer survival of tumor-bearing mice than PLD+pUH+CQ did. Blood cell components were analyzed and showed that neutrophil and reticulocytes decreased while lymphocytes increased after exercise.

Association of Second-generation Antiandrogens With Cognitive and Functional Toxic Effects in Randomized Clinical Trials: A Systematic Review and Meta-analysis

Importance

The use of second-generation antiandrogens (AAs) in the treatment of prostate cancer is increasing. Retrospective evidence suggests an association between second-generation AAs and adverse cognitive and functional outcomes, but further data from prospective trials are needed.

Objective

To examine whether evidence from randomized clinical trials (RCTs) in prostate cancer supports an association between second-generation AAs and cognitive or functional toxic effects.

Data Sources

PubMed, EMBASE, and Scopus (inception to September 12, 2022).

Study Selection

Randomized clinical trials of second-generation AAs (abiraterone, apalutamide, darolutamide, or enzalutamide) among individuals with prostate cancer that reported cognitive toxic effects, asthenic toxic effects (eg, fatigue, weakness), or falls were evaluated.

Data Extraction and Synthesis

Study screening, data abstraction, and bias assessment were completed independently by 2 reviewers following the Preferred Reporting Items for Systematic Reviews and Meta-analyses and Enhancing the Quality and Transparency of Health Research reporting guidelines. Tabular counts for all-grade toxic effects were determined to test the hypothesis formulated before data collection.

Main Outcomes and Measures

Risk ratios (RRs) and SEs were calculated for cognitive toxic effects, asthenic toxic effects, and falls. Because fatigue was the asthenic toxic effect extracted from all studies, data on fatigue are specified in the results. Meta-analysis and meta-regression were used to generate summary statistics.

Results

The systematic review included 12 studies comprising 13 524 participants. Included studies had a low risk of bias. An increased risk of cognitive toxic effects (RR, 2.10; 95% CI, 1.30-3.38; P = .002) and fatigue (RR, 1.34; 95% CI, 1.16-1.54; P < .001) was noted among individuals treated with second-generation AAs vs those in the control arms. The findings were consistent in studies that included traditional hormone therapy in both treatment arms for cognitive toxic effects (RR, 1.77; 95% CI, 1.12-2.79; P = .01) and fatigue (RR, 1.32; 95% CI, 1.10-1.58; P = .003). Meta-regression supported that, across studies, increased age was associated with a greater risk of fatigue with second-generation AAs (coefficient, 0.75; 95% CI, 0.04-0.12; P < .001). In addition, the use of second-generation AAs was associated with an increased risk of falls (RR, 1.87; 95% CI, 1.27-2.75; P = .001).

Conclusions and Relevance

The findings of this systematic review and meta-analysis suggest that second-generation AAs carry an increased risk of cognitive and functional toxic effects, including when added to traditional forms of hormone therapy.

A randomized trial to evaluate the effects of a supervised exercise program on insomnia in patients with non-metastatic breast cancer undergoing chemotherapy: design of the FATSOMCAN study

BACKGROUND

Up to 70% of breast cancer patients report symptoms of insomnia during and after treatment. Despite the ubiquity of insomnia symptoms, they are under-screened, under-diagnosed and poorly managed in breast cancer patients. Sleep medications treat symptoms but are ineffective to cure insomnia. Other approaches such as cognitive behavioral therapy for insomnia, relaxation through yoga and mindfulness are often not available for patients and are complex to implement. An aerobic exercise program could be a promising treatment and a feasible option for insomnia management in breast cancer patients, but few studies have investigated the effects of such a program on insomnia.

METHODS

This multicenter, randomized clinical trial evaluate the effectiveness of a moderate to high intensity physical activity program (45 min, 3 times per week), lasting 12 weeks, in minimizing insomnia, sleep disturbances, anxiety/depression, fatigue, and pain, and in enhancing cardiorespiratory fitness. Patients with breast cancer be recruited from six hospitals in France and randomly allocated to either the "training" or the "control" group. Baseline assessments include questionnaires [Insomnia Severity Index (ISI), Pittsburgh Sleep Quality Index questionnaire (PSQI), Hospital Anxiety Depression Scale (HADS), Epworth Sleepiness Scale (ESS)], home polysomnography (PSG), and 7-day actigraphy coupled with completion of a sleep diary. Assessments are repeated at the end of training program and at six-month follow-up.

DISCUSSION

This clinical trial will provide additional evidence regarding the effectiveness of physical exercise in minimizing insomnia during and after chemotherapy. If shown to be effective, exercise intervention programs will be welcome addition to the standard program of care offered to patients with breast cancer receiving chemotherapy.

TRIAL REGISTRATION

National Clinical Trials Number (NCT04867096).

Effects of exercise mode and intensity on patient-reported outcomes in cancer survivors: a four-arm intervention trial

PURPOSE

The aim of this study was to compare the effects of different exercise modes (aerobic, resistance) and intensity prescriptions (standard, polarized, undulating) on patient-reported outcomes (PROs) in cancer survivors.

METHODS

107 breast or prostate cancer survivors (52% females, age 58 ± 10 years, 6-52 weeks after primary therapy) performed one out of four training programs, two sessions/week, over 12 weeks: work rate-matched vigorous intensity aerobic training (ATStandard, n = 28) and polarized intensity aerobic training (ATPolarized, n = 26) as well as volume-matched moderate intensity resistance training (RTStandard, n = 26) and daily undulating intensity resistance training (RTUndulating, n = 27). Health-related quality of life (HRQoL, EORTC-QLQ-C30) and cancer-related fatigue (CRF, MFI-20) were assessed at baseline, at the end of intervention and after a 12-week follow-up without further prescribed exercise.

RESULTS

Over the intervention period, HRQoL-function-scales of the EORTC-QLQ-C30 improved over time (p = .007), but no group*time interaction was observed (p = .185). Similarly, CRF values of the MFI-20 improved over time (p = .006), but no group*time interaction was observed (p = .663). When including the follow-up period and pooling the AT and the RT groups, HRQoL-function-scales developed differently between groups (p = .022) with further improvements in RT and a decline in AT. For CRF no significant interaction was found, but univariate analyses showed a non-significant trend of more sustainable effects in RT.

CONCLUSIONS

AT and RT with different work rate-/volume-matched intensity prescriptions elicits positive effects on HRQoL and CRF, without one regimen being significantly superior to another over the intervention period. However, RT might result in more sustainable effects compared to AT over a follow-up period without any further exercise prescription.

CLINICAL TRIAL REGISTRATION

The study was registered at clinicaltrials.gov (NCT02883699).

Experience of using a virtual reality rehabilitation management platform for breast cancer patients: a qualitative study

PURPOSES

Postoperative rehabilitation of upper limb function is crucial for breast cancer. Therefore, we developed a rehabilitation management platform using virtual reality to improve rehabilitation compliance and effect. The purpose of this research was to understand the user usability experience of breast cancer patients about the postoperative rehabilitation management of upper limb function using virtual reality.

METHODS

A qualitative descriptive research was designed. We used a maximum difference purpose sampling method. According to the inclusion and exclusion criteria, a 3-armor hospital in Changchun was selected for the recruitment. A one-on-one semi-structured interviews were conducted with patients after breast cancer operation. The Colaizzi seven-step analysis method was used to classify data under summarized themes.

RESULTS

Twenty patients participated in this semi-structured interview. User experience could be summarized into four themes as follows: 1) experience and feeling after using the virtual reality rehabilitation management platform; 2) factors influencing the use of the virtual reality rehabilitation management platform; 3) willingness to recommend the virtual reality rehabilitation management platform to peers; and 4) suggestions to improve the virtual reality rehabilitation management platform.

CONCLUSIONS

Breast cancer patients who used the rehabilitation management platform had a good experience, and their recognition and satisfaction were high. The use of the platform is influenced by many factors, and most patients are willing to recommend this platform to their peers. Future studies should be conducted according to patients' feedback and suggestions on how to further optimize and improve the platform.

The role of exercise for pain management in adults living with and beyond cancer: a systematic review and meta-analysis

BACKGROUND

Pain is a common side effect of cancer or cancer treatment that negatively impacts biopsychosocial wellbeing and quality of life. Exercise is a potential intervention to manage pain that is safe and has multiple benefits. The objective was to determine the role of exercise in cancer pain management.

METHODS

We completed a systematic review and meta-analysis of exercise interventions in adults with any type or stage of cancer by searching Ovid MEDLINE®, Embase, APA PsycInfo, the Cochrane Central Register of Controlled Trials, CINAHL, and SPORTDiscus. We included experimental and quasi-experimental designs where pain was measured as an outcome. Data synthesis included narrative and tabular summary. A meta-analysis was performed on studies powered to detect the effect of exercise on pain. Study quality was evaluated using the Cochrane risk of bias tool and certainty of evidence was evaluated using the GRADE tool.

RESULTS

Seventy-six studies were included. Studies were predominantly conducted in breast cancer and exercise usually included a combination of aerobic and strength training. Ten studies were included in the meta-analysis demonstrating a significant effect for exercise in decreasing pain (estimated average standard mean difference (SMD) was g =  - 0.73 (95% CI: - 1.16 to - 0.30)); however, the overall effect prediction interval was large. Overall risk of bias for most studies was rated as some concerns and the grading of evidence certainty was low.

CONCLUSION

There are limitations in the evidence for exercise to manage cancer-related pain. Further research is needed to understand the role of exercise in a multimodal pain management strategy.

Diet and physical activity interventions in Black and Latina women with breast cancer: A scoping review

Background

A growing number of lifestyle interventions are being developed to promote weight loss and adoption of a healthful lifestyles among breast cancer survivors; yet Black and Latina women remain underrepresented.

Purpose

We performed a scoping review of the available peer-reviewed literature to describe and compare the content, design, methods, and primary outcomes of current diet and/or physical activity (PA) interventions after a breast cancer diagnosis among Black and Latina women.

Methods

We queried PubMed, EMBASE, CINAHL, MEDLINE, and Clinicaltrials.gov up to October 1, 2022, to identify all randomized controlled trials of diet and/or PA after diagnosis of breast cancer with a majority (>50%) of Black or Latina participants.

Results

Twenty-two randomized controlled trials were included in this review (five efficacy, twelve pilot, five on-going). Nine trials were among Latinas (two diet, four PA, and three diet/PA), six among Blacks (one PA and five diet/PA) and seven included both populations (five PA and two diet/PA), all of which examined different endpoints. Two of the five efficacy studies achieved their a priori outcome (one diet trial improved short term dietary intake; one PA trial achieved clinically significant improvements in metabolic syndrome score), both in Latinas. Eight pilot trials intervened on both diet and PA and three of them found favorable behavioral changes. Three (two for Latinas and one for Blacks) out of the nine diet and PA trials and three (all for Latinas) efficacy trials incorporated a culturally focused approach (i.e., traditional foods, music, Spanish content, bicultural health coaches, spirituality). Overall, four trials, including one efficacy trial, had one-year follow-up data, with three finding sustained behavior change. Electronic/mobile components were incorporated in five trials and one involved informal care givers. Most of the trials were geographically limited to the Northeast USA (n=8, NY, NC, DC, NJ) and Texas (n=4).

Conclusions

Most of the trials we identified were pilot or feasibility studies and of short duration, demonstrating the need for large randomized controlled efficacy lifestyle interventions among Black and Latina breast cancer survivors. Culturally tailored programing was limited but is an important component to incorporate in future trials in these populations.

Effect of Physical Activity During Chemotherapy on Cognitive Function in Cancer Survivors: A Systematic Review and Meta-Analysis

Purpose: To determine if cancer survivors who perform physical activity (PA) during chemotherapy have improved levels of cognitive function compared to those who do not. Method: E-databases (Ovid MEDLINE, Embase, CINAHL, PsycINFO, AMED) were searched from inception to February 4, 2020. Quantitative studies that assessed cognitive outcomes for adults with any cancer type who received chemotherapy concurrent with PA were selected. Risk of bias was assessed using Cochrane's RoB 2, ROBINS-I, and Newcastle-Ottawa scales. A meta-analysis was performed using standardized mean difference (SMD). Results: Twenty-two studies (15 randomized controlled trials [RCTs] and 7 non-RCTs) met the inclusion criteria. The meta-analysis demonstrated that combined resistance and aerobic training had a small yet statistically significant effect on social cognition compared to usual care (SMD 0.23 [95% CI: 0.04, 0.42], p = 0.020). Conclusions: Combined resistance and aerobic exercise may benefit social cognition in cancer survivors undergoing chemotherapy. Due to high risk of bias and low quality of evidence of included studies, we recommend further investigation to support these findings and make specific PA recommendations.

Exercise volume load in women with breast cancer: Study protocol for the ABRACE randomized clinical trial

Background

An increased number of breast cancer patients are challenged by acute and persistent treatment side effects. Oncology guidelines have been establishing physical exercise to counteract several treatment-related toxicities throughout cancer care. However, evidence regarding the optimal dose-response, feasibility, and the minimal resistance exercise volume and/or intensity remains unclear. The ABRACE Study will assess the impact of different resistance training volumes (i.e., single or multiple sets) combined with aerobic exercise on physical and psychological outcomes of breast cancer patients undergoing primary treatment.

Methods

This study is a randomized, controlled, three-armed parallel trial. A total of 84 participants, aged ≥18 years, with breast cancer stages I-III, initiating adjuvant or neoadjuvant chemotherapy (≤50% of sessions completed) will be randomized to multiple sets resistance training plus aerobic training group, single set resistance training plus aerobic training group or control group. Neuromuscular and cancer-related fatigue (primary outcomes), muscle strength, muscle thickness, muscle quality by echo intensity, body composition, cardiorespiratory capacity, functional performance, upper-body endurance and quality of life will be measured before and after the 12-week intervention. Our analysis will follow the intention-to-treat approach and per-protocol criteria, with additional sub-group analysis.

Discussion

Findings support prescribing exercise during chemotherapy for breast cancer and elucidate the potential role of different resistance training volumes as a management strategy for physical and psychological impairments in women with early-stage breast cancer. Our main hypothesis is for superiority in physical and psychological outcomes for both training groups compared to the control group, with no difference between single or multiple sets groups.

Trial registration

Clinical trials NCT03314168.

Physical rehabilitation for the management of cancer-related fatigue during cytotoxic treatment: a systematic review with meta-analysis

OBJECTIVE

To assess the effect of physical therapy on cancer-related fatigue (CRF) during cytotoxic anticancer treatment.

METHODS

Systematic review with meta-analysis of randomized clinical trials published from 2010 to 2021 (EMBASE, MEDLINE, PEDro; SciELO, and LILACS). Studies assessing the effect of supervised physical therapy (IG) for the management of CRF on adults undergoing anticancer treatment compared with a control group (CG) covering usual care or any uncontrolled practice, such as recommendations about exercise and health education, were included in this review.

RESULTS

A total of 22 studies were included in the SR and 21 in the meta-analysis, resulting in 1.992 individuals (CG = 973 and IG = 1.019). There was a reduction in general fatigue [SMD =  - 0.69; 95%CI (- 1.15, - 0.22) p < 0.01; I² = 87%; NNT = 3], with greater weight attributed to combined exercise (44%). Physical fatigue also reduced [SMD =  - 0.76; 95%CI (- 1.13, - 0.39) p < 0.01; I² = 90%; NNT = 2], with greater weight for resistance exercise (50%) and greater effect with combined exercise [SMD =  - 1.90; 95%CI (- 3.04, - 0.76) p < 0.01; I ² = 96%]. There was reduction in general fatigue with moderate intensity (74%) [SMD =  - 0.89; 95%CI (- 1.61, - 0.17) p < 0.02; I² = 90%] and physical fatigue [SMD =  - 1.00; 95%CI (- 1.54, - 0.46) p < 0.01; I² = 92%], while high intensity reduced only general fatigue [SMD =  - 0.35; 95%CI (- 0.51, - 0.20) p < 0.01; I² = 0%]. The number of overall and weekly sessions has been shown to contribute to the reduction of CRF.

CONCLUSION

Physical rehabilitation with moderate intensity promoted greater relief of general and physical fatigue. Even after controlling for high heterogeneity, the quality of evidence, summarized in GRADE, was considered moderate for general fatigue and low for physical fatigue.

Effects of high-intensity interval training on health-related quality of life in chronic lymphocytic leukemia: A pilot study

INTRODUCTION

Chronic lymphocytic leukemia (CLL) is the most common incurable leukemia/lymphoma in the United States. Individuals with CLL are at risk for disability, frailty, and cancer-specific complications that negatively affect health-related quality of life (HRQOL). High-intensity interval training (HIIT) and resistance training (RT) are safe and feasible for individuals with chronic diseases and when combined, they may be beneficial for reducing cancer-related fatigue, symptom burden, and global quality of life. However, no studies have examined the impact of HIIT or RT on HRQOL in CLL. The purpose of this study was to investigate the effects of a 12-week HIIT and RT (HIIT+RT) intervention on HRQOL in adults with treatment naïve CLL.

MATERIALS AND METHODS

Changes in HRQOL was a secondary outcome in this pilot study. Individuals with CLL (63.9 ± 8.5 yrs) were non-randomly assigned to 12 weeks of HIIT+RT or a control group. The HIIT+RT protocol consisted of three 30-min sessions/week of HIIT and two sessions/week of RT. The control group maintained usual daily activities. We assessed pre and post HRQOL using the Functional Assessment of Cancer Therapy-Lymphoma (FACT-Lym) questionnaire with domains of physical (PWB), social (SWB), emotional (EWB), functional (FWB), and general (FACT-G) well-being as well as a lymphoma-specific subscale (LymS). We used a two-way mixed analysis of variance to assess changes in HRQOL. We calculated effect size (ES) using Cohen's d.

RESULTS

Fifteen participants (HIIT+RT: n = 9; Control: n = 6) completed the study and questionnaire. Scores for FWB improved following HIIT+RT (21.7 ± 3.4 to 23.9 ± 3.2; ES = 1.38) compared to controls (25.7 ± 2.2 to 25.7 ± 2.3). The HIIT+RT group experienced clinically meaningful improvements in total FACT-Lym, FWB, FACT-G, and LymS. The control group had clinically meaningful changes only in LymS.

DISCUSSION

The large effect sizes and clinically meaningful improvements associated with 12 weeks of HIIT+RT support the potential benefits of this type of exercise program for FWB, lymphoma-specific symptoms, and general well-being in CLL. A future randomized trial with an adequately powered sample size is needed to evaluate these findings.

TRIAL REGISTRATION

NCT04950452.

The synergistic effect of physical activity and nutrition to improve the quality of life in breast cancer patients: a systemic review

PURPOSE

Medical recommendations for balanced control of exercise, physical activity, and nutritional intake after breast cancer diagnosis remain unclear. Therefore, this review aims to summarize effective exercise methods and dietary opinions by reviewing clinical trial results.

METHODS

We systematically reviewed studies that evaluated 1) the relationship between exercise methods and quality of life improvement in patients with breast cancer and 2) the recommendations for physical activity, exercise, nutrition, and potential ways to improve life after breast cancer. To conduct this literature review, we searched the PubMed database for articles published until October 1, 2022, using the terms "physical activity OR exercise," "breast cancer," and "nutrition." After a primary review of the retrieved articles, we included clinical trials in this systematic review.

RESULTS

We hypothesized that physical activity improves the quality of life after the onset of breast cancer, suggesting that a balanced approach to aerobic exercise and resistance exercise increases the efficacy of anticancer treatment. From a nutritional point of view, it is recommended that both physical activity and diet management are necessary for patients with breast cancer.

CONCLUSION

Customized exercise and diet can help with weight loss, the reduction of cancer-induced fatigue, the regulation of hormonal changes, the reduction of inflammatory factors, and the improvement of mental health and vitality. Understanding the integrated mechanisms of physical activity and nutritional balance will improve the quality of life of patients with breast cancer. Therefore, it is necessary to continuously advance exercise programs and develop an alimentary balance control program.

Physical Activity and Health-Related Quality of Life in Women With Breast Cancer: A Meta-Analysis

BACKGROUND

Physical activity (PA) is associated with improved health-related quality of life (HRQoL) among women with breast cancer; however, uncertainty remains regarding PA types and dose (frequency, duration, intensity) and various HRQoL measures. A systematic review and meta-analysis of randomized controlled trials was conducted to clarify whether specific types and doses of physical activity was related to global and specific domains of HRQoL, as part of the Global Cancer Update Programme, formerly known as the World Cancer Research Fund-American Institute for Cancer Research Continuous Update Project.

METHODS

PubMed and CENTRAL databases were searched up to August 31, 2019. Weighted mean differences (WMDs) in HRQoL scores were estimated using random effects models. An independent expert panel graded the evidence.

RESULTS

A total of 79 randomized controlled trials (14 554 breast cancer patients) were included. PA interventions resulted in higher global HRQoL as measured by the Functional Assessment of Cancer Therapy-Breast (WMD = 5.94, 95% confidence intervals [CI] = 2.64 to 9.24; I2 = 59%, n = 12), Functional Assessment of Cancer Therapy-General (WMD = 4.53, 95% CI = 1.94 to 7.13; I2 = 72%, n = 18), and European Organization for Research and Treatment of Cancer Quality of Life Questionnaire-C30 (WMD = 6.78, 95% CI = 2.61 to 10.95; I2 = 76.3%, n = 17). The likelihood of causality was considered probable that PA improves HRQoL in breast cancer survivors. Effects were weaker for physical function and mental and emotional health. Evidence regarding dose and type of PA remains insufficient for firm conclusions.

CONCLUSION

PA results in improved global HRQoL in breast cancer survivors with weaker effects observed for physical function and mental and emotional health. Additional research is needed to define the impact of types and doses of activity on various domains of HRQoL.