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Linhares BG, Linhares DG, Boppre G, Zacca R. New insights into cardioprotection in breast cancer patients undergoing physical exercise during chemotherapy: A systematic review and meta-analysis. Curr Probl Cardiol 2024; 49:102743. [PMID: 39053681 DOI: 10.1016/j.cpcardiol.2024.102743] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2024] [Accepted: 07/10/2024] [Indexed: 07/27/2024]
Abstract
BACKGROUND Chemotherapy associated with breast cancer often induces cardiotoxicity, which compromises patients' health and quality of life. OBJECTIVE To verify the effect of physical exercise on chemotherapy-induced cardiotoxicity, through the assessment of cardiac function in patients with breast cancer. METHODS A systematic review and meta-analysis of clinical studies was conducted to evaluate the effectiveness of physical training in chemotherapy-induced cardiomyopathy in the PubMed, Web of Sciences and Scopus databases. Thirteen studies were included in the systematic review and eleven studies in the data meta-analysis. RESULTS Global longitudinal strain presents a cardioprotective effect when compared to the control group (Heterogeneity: Chi² = 12.81, df = 10 (p = 0.23); I² = 22 %.) Test for global effect: Z = 2, 13 (p = 0.03). Physical training is more effective (test for subgroup differences, p = 0.031) in attenuating the impairment of %GLS induced by chemotherapy if performed concomitantly with exposure to chemotherapy (95 % CI; Heterogeneity: Chi² = 7.49, gl = 5 (p = 0.19); I² = 33 %; Test for global effect: Z = 2.33 (p = 0.02) when compared after chemotherapy treatment, or in the long term (for 12 months or more). However, without benefits in LVEF (Heterogeneity: Chi² = 42.14, df = 10 (p < 0.00001); I² = 76 %) Test for global effect: Z = 2.51 (p = 0.01) Conclusion: Exercise training is a cardioprotective approach in breast cancer patients who experience chemotherapy-induced cardiotoxicity. Exercise during exposure to chemotherapy has greater effects on preserving cardiac function.
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Affiliation(s)
- Bruno Gama Linhares
- Research Center in Physical Activity, Health, and Leisure (CIAFEL), Faculty of Sport, University of Porto, Porto, Portugal.
| | - Diego Gama Linhares
- Postgraduate Program in Exercise and Sport Sciences, Rio de Janeiro State University, Rio de Janeiro, Brazil; Laboratory of Exercise and Sport, Institute of Physical Education and Sports, Rio de Janeiro State University, Rio de Janeiro, Brazil
| | - Giorjines Boppre
- Research Center in Physical Activity, Health, and Leisure (CIAFEL), Faculty of Sport, University of Porto, Porto, Portugal; Laboratory for Integrative and Translational Research in Population Health (ITR), University of Porto, Porto, Portugal; Nucleus of Research in Human Motricity Sciences, Universidad Adventista de Chile, Chillán, Chile
| | - Rodrigo Zacca
- Research Center in Physical Activity, Health, and Leisure (CIAFEL), Faculty of Sport, University of Porto, Porto, Portugal; Laboratory for Integrative and Translational Research in Population Health (ITR), University of Porto, Porto, Portugal
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Gao Y, Ling Y, Wu H, Zhang P, Zhou J, Gu H, Yang J, Zhou Y, Zhong Z, Chi J. Swimming training attenuates doxorubicin induced cardiomyopathy by targeting the mir-17-3p/KEAP1/NRF2 axis. Biochem Biophys Res Commun 2024; 739:150568. [PMID: 39178797 DOI: 10.1016/j.bbrc.2024.150568] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2024] [Revised: 07/24/2024] [Accepted: 08/19/2024] [Indexed: 08/26/2024]
Abstract
Doxorubicin (DOX), as a first-line anticancer drug, is widely used in the treatment of various cancers. However, its clinical application is restricted due to its severe cardiac toxicity. Previous studies have indicated exercise training can alleviate the DOX-induced cardiotoxicity (DIC), but the underlying mechanism remains unclear. Our research has discovered, post-exercise, an elevated expression level of mir-17-3p, but in DIC its level decreases. Therefore, we further studied the effect of exercise mir-17-3p axis on DIC. In vivo, we simulated DIC mouse model, followed by an intervention using swimming and adenovirus to inhibit mir-17-3p. We found that inhibition of mir-17-3p can weaken the protection of exercise against DIC, presenting as weakened heart function. Besides, the levels of Malondialdehyde and Fe2+ in the cardiac tissue increased, along with diminished glutathione peroxidase 4 and Solute Carrier Family 7 Member 11 levels, and a decline in the concentration of glutathione, causing an increase in ferroptosis. Moreover, in vitro, we used dual-luciferase assay to confirm that Kelch Like ECH Associated Protein 1 (KEAP1) can be a target gene of mir-17-3p. We used Keap1/NFE2 Like BZIP Transcription Factor 2 (NRF2) inhibitor brusatol and Stimulator of Interferon Response CGAMP Interactor 1 (STING) agonist SR-717 to verify the mir-17-3p/KEAP1 axis can affect the Cyclic GMP-AMP Synthase (CGAS)/STING pathway, leading to further ferroptosis in DIC. This manifested as a reduction in ferroptosis. In summary, our research suggests swimming training enhances the levels of mir-17-3p, thereby activating the KEAP1/NRF2 pathway, and weakening the CGAS/STING pathway, improving ferroptosis in DIC.
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Affiliation(s)
- Yefei Gao
- Department of Cardiology, The First Affiliated Hospital of ShaoXing University, Shaoxing University, Shaoxing, 312000, Zhejiang, China
| | - Yan Ling
- The First Affiliated Hospital of ShaoXing University, Shaoxing University, Shaoxing, 312000, Zhejiang, China
| | - Haowei Wu
- Department of Cardiology, The First Affiliated Hospital of ShaoXing University, Shaoxing University, Shaoxing, 312000, Zhejiang, China
| | - Peipei Zhang
- The First Affiliated Hospital of ShaoXing University, Shaoxing University, Shaoxing, 312000, Zhejiang, China
| | - Jiedong Zhou
- The First Affiliated Hospital of ShaoXing University, Shaoxing University, Shaoxing, 312000, Zhejiang, China
| | - Haodi Gu
- The First Affiliated Hospital of ShaoXing University, Shaoxing University, Shaoxing, 312000, Zhejiang, China
| | - Juntao Yang
- Department of Cardiology, The First Affiliated Hospital of ShaoXing University, Shaoxing University, Shaoxing, 312000, Zhejiang, China
| | - Yan Zhou
- Department of Cardiology, The First Affiliated Hospital of ShaoXing University, Shaoxing University, Shaoxing, 312000, Zhejiang, China.
| | - Zuoquan Zhong
- The First Affiliated Hospital of ShaoXing University, Shaoxing University, Shaoxing, 312000, Zhejiang, China.
| | - Jufang Chi
- Department of Cardiology, Zhuji People's Hospital, Zhejiang, China.
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Wernhart S, Rassaf T. Relevance of Cardiovascular Exercise in Cancer and Cancer Therapy-Related Cardiac Dysfunction. Curr Heart Fail Rep 2024; 21:238-251. [PMID: 38696059 PMCID: PMC11090948 DOI: 10.1007/s11897-024-00662-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 04/03/2024] [Indexed: 05/14/2024]
Abstract
PURPOSE OF THE REVIEW Cancer therapy-related cardiac dysfunction (CTRCD) has been identified as a threat to overall and cancer-related survival. Although aerobic exercise training (AET) has been shown to improve cardiorespiratory fitness (CRF), the relationship between specific exercise regimens and cancer survival, heart failure development, and reduction of CTRCD is unclear. In this review, we discuss the impact of AET on molecular pathways and the current literature of sports in the field of cardio-oncology. RECENT FINDINGS Cardio-oncological exercise trials have focused on variations of AET intensity by using moderate continuous and high intensity interval training, which are applicable, safe, and effective approaches to improve CRF. AET increases CRF, reduces cardiovascular morbidity and heart failure hospitalization and should thus be implemented as an adjunct to standard cancer therapy, although its long-term effect on CTRCD remains unknown. Despite modulating diverse molecular pathways, it remains unknown which exercise regimen, including variations of AET duration and frequency, is most suited to facilitate peripheral and central adaptations to exercise and improve survival in cancer patients.
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Affiliation(s)
- Simon Wernhart
- Department of Cardiology and Vascular Medicine, West German Heart- and Vascular Center, University Hospital Essen, University Duisburg-Essen, Hufelandstrasse 55, 45147, Essen, Germany.
| | - Tienush Rassaf
- Department of Cardiology and Vascular Medicine, West German Heart- and Vascular Center, University Hospital Essen, University Duisburg-Essen, Hufelandstrasse 55, 45147, Essen, Germany
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Antunes P, Joaquim A, Sampaio F, Nunes C, Ascensão A, Vilela E, Teixeira M, Oliveira J, Capela A, Amarelo A, Leão I, Marques C, Viamonte S, Alves A, Esteves D. Exercise Training Benefits Health-Related Quality of Life and Functional Capacity during Breast Cancer Chemotherapy: A Randomized Controlled Trial. Med Sci Sports Exerc 2024; 56:600-611. [PMID: 38051110 DOI: 10.1249/mss.0000000000003341] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/07/2023]
Abstract
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.
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Affiliation(s)
| | | | | | - Célia Nunes
- Department of Mathematics and Center of Mathematics and Applications, University of Beira Interior, Covilhã, PORTUGAL
| | - António Ascensão
- Laboratory of Metabolism and Exercise (LaMetEx), Research Centre in Physical Activity, Health and Leisure (CIAFEL), Laboratory for Integrative and Translational Research in Population Health (ITR), Faculty of Sports, University of Porto, Porto, PORTUGAL
| | - Eduardo Vilela
- Department of Cardiology, Centro Hospitalar de Vila Nova de Gaia/Espinho, Vila Nova de Gaia, PORTUGAL
| | - Madalena Teixeira
- Department of Cardiology, Centro Hospitalar de Vila Nova de Gaia/Espinho, Vila Nova de Gaia, PORTUGAL
| | - Jorge Oliveira
- Department of Cardiology, Centro Hospitalar de Vila Nova de Gaia/Espinho, Vila Nova de Gaia, PORTUGAL
| | | | | | | | - Cristiana Marques
- Department of Medical Oncology, Centro Hospitalar de Vila Nova de Gaia/Espinho, Vila Nova de Gaia, PORTUGAL
| | | | | | - Dulce Esteves
- Research Center in Sport Sciences, Health and Human Development (CIDESD), Sport Sciences Department, University of Beira Interior, PORTUGAL
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Amin AM, Khlidj Y, Abuelazm M, Ibrahim AA, Tanashat M, Imran M, Nazir A, Shaikhkhalil H, Abdelazeem B. The efficacy and safety of exercise regimens to mitigate chemotherapy cardiotoxicity: a systematic review and meta-analysis of randomized controlled trials. CARDIO-ONCOLOGY (LONDON, ENGLAND) 2024; 10:10. [PMID: 38395955 PMCID: PMC10885653 DOI: 10.1186/s40959-024-00208-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/05/2023] [Accepted: 02/05/2024] [Indexed: 02/25/2024]
Abstract
BACKGROUND Cardiotoxicity is one of the most common adverse events of the chemotherapy. Physical exercise was shown to be cardioprotective. We aim to estimate the efficacy and safety of exercise in cancer patients receiving cardiotoxic chemotherapy. METHODS We conducted a systematic review and meta-analysis of randomized controlled trials (RCTs), which were retrieved by systematically searching PubMed, Web of Science, SCOPUS, Cochrane, Clinical Trials.gov, and MedRxiv through July 17th, 2023. We used RevMan V. 5.4 to pool dichotomous data using risk ratio (RR) and continuous data using mean difference (MD), with a 95% confidence interval (CI). PROSPERO ID CRD42023460902. RESULTS We included thirteen RCTs with a total of 952 patients. Exercise significantly increased VO2 peak (MD: 1.95 with 95% CI [0.59, 3.32], P = 0.005). However, there was no significant effect regarding left ventricular ejection fraction, global longitudinal strain, cardiac output, stroke volume, left ventricular end-diastolic volume, left ventricular end-systolic volume, E/A ratio, resting heart rate, peak heart rate, resting systolic blood pressure, and resting diastolic blood pressure. Also, there was no significant difference regarding any adverse events (AEs) (RR: 4.44 with 95% CI [0.47, 41.56], P = 0.19), AEs leading to withdrawal (RR: 2.87 with 95% CI [0.79, 10.43], P = 0.11), serious AEs (RR: 3.00 with 95% CI [0.14, 65.90], P = 0.49), or all-cause mortality (RR: 0.25 with 95% CI [0.03, 2.22], P = 0.21). CONCLUSION Exercise is associated with increased VO2 peak in cancer patients receiving cardiotoxic chemotherapy. However, there was no significant difference between exercise and usual care regarding the echocardiographic and safety outcomes.
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Affiliation(s)
| | - Yehya Khlidj
- Faculty of Medicine, Algiers University, Algiers, Algeria
| | | | | | | | - Muhammad Imran
- University College of Medicine and Dentistry, The University of Lahore, Lahore, Pakistan
| | - Abubakar Nazir
- Faculty of Medicine, King Edward Medical University, Lahore, Pakistan
| | | | - Basel Abdelazeem
- Department of Cardiology, West Virginia University, Morgantown, WV, USA
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Herranz-Gómez A, Suso-Martí L, Varangot-Reille C, Barrachina-Gauchia L, Casaña J, López-Bueno L, Calatayud J, Cuenca-Martínez F. The Benefit of Exercise in Patients With Cancer Who Are Receiving Chemotherapy: A Systematic Review and Network Meta-Analysis. Phys Ther 2024; 104:pzad132. [PMID: 37792792 DOI: 10.1093/ptj/pzad132] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/21/2022] [Revised: 06/08/2023] [Accepted: 09/30/2023] [Indexed: 10/06/2023]
Abstract
OBJECTIVE This study aimed to determine which therapeutic exercise-based intervention is most effective in improving cardiorespiratory fitness (CRF) in patients with cancer receiving chemotherapy. METHODS The authors conducted a systematic review with network meta-analysis in MEDLINE (PubMed), Embase, Cumulative Index to Nursing and Allied Health Literature, Scopus, SPORTDiscus, and Web of Science. The authors employed the Physiotherapy Evidence Database and the Revised Cochrane Risk of Bias Tool for Randomized Trials to assess the methodological quality and risk of bias, respectively. RESULTS A total of 27 studies were included. Data were pooled using a random-effects model. Adding aerobic training (moderate to high intensity), with or without resistance training, to usual care versus usual care was statistically significant, with a small beneficial effect (aerobic training: standardized mean difference = 0.46; 95% CI= 0.17 to 0.75; aerobic and resistance training: standardized mean difference = 0.26; 95% CI = 0.00 to 0.52) for peak oxygen consumption at the postintervention assessment. CONCLUSION Therapeutic exercise-based interventions to improve short-term CRF in patients with cancer receiving chemotherapy should include moderate- to high-intensity aerobic exercise, with or without resistance training. IMPACT It is important to improve CRF in the oncological population due to its relationship with mortality. The results showed the benefit of exercise to improve cardiorespiratory fitness in the oncology population receiving chemotherapy treatment.
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Affiliation(s)
- Aida Herranz-Gómez
- Department of Physiotherapy, Faculty of Health Sciences, European University of Valencia, Valencia, Spain
- Exercise Intervention for Health Research Group (EXINH-RG), Department of Physiotherapy, University of Valencia, Valencia, Spain
| | - Luis Suso-Martí
- Exercise Intervention for Health Research Group (EXINH-RG), Department of Physiotherapy, University of Valencia, Valencia, Spain
| | - Clovis Varangot-Reille
- Centre Hospitalier Lyon Sud, Hospices Civils de Lyon, Département d´Anesthésie-Réanimation, Lyon, Pierre-Bénite, France
| | - Laia Barrachina-Gauchia
- Exercise Intervention for Health Research Group (EXINH-RG), Department of Physiotherapy, University of Valencia, Valencia, Spain
| | - José Casaña
- Exercise Intervention for Health Research Group (EXINH-RG), Department of Physiotherapy, University of Valencia, Valencia, Spain
| | - Laura López-Bueno
- Exercise Intervention for Health Research Group (EXINH-RG), Department of Physiotherapy, University of Valencia, Valencia, Spain
| | - Joaquín Calatayud
- Exercise Intervention for Health Research Group (EXINH-RG), Department of Physiotherapy, University of Valencia, Valencia, Spain
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Schneider C, Ryffel C, Stütz L, Rabaglio M, Suter TM, Campbell KL, Eser P, Wilhelm M. Supervised exercise training in patients with cancer during anthracycline-based chemotherapy to mitigate cardiotoxicity: a randomized-controlled-trial. Front Cardiovasc Med 2023; 10:1283153. [PMID: 38111886 PMCID: PMC10725952 DOI: 10.3389/fcvm.2023.1283153] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2023] [Accepted: 11/20/2023] [Indexed: 12/20/2023] Open
Abstract
Background Exercise training (ET) has been shown to mitigate cardiotoxicity of anthracycline-based chemotherapies (AC) in animal models. Data from randomized controlled trials in patients with cancer are sparse. Methods Patients with breast cancer or lymphoma receiving AC were recruited from four cancer centres and randomly assigned to 3 months supervised ET. Primary outcome was change in left ventricular global longitudinal strain (GLS) from baseline (before AC) to post AC (AC-end) compared between the EXduringAC group, who participated in an exercise intervention during AC including the provision of an activity tracker, and the control group EXpostAC, who received an activity tracker only. Secondary outcome parameters were changes in high sensitivity Troponin T (hsTnT), NT-pro-brain natriuretic peptide (NT-proBNP), peak oxygen consumption (peak VO2) and objectively measured physical activity (PA) during this same time-period. All assessments were repeated at a 12-week follow-up from AC-end, when also the EXpostAC group had completed the ET, that started after AC. In exploratory analyses, robust linear models were performed to assess the association of PA with changes in echocardiographic parameters and biomarkers of LV function. Results Fifty-seven patients (median age 47 years; 95% women) were randomized to EXduringAC (n = 28) and EXpostAC (n = 29) group. At AC-end, GLS deteriorated in both study groups (albeit insignificantly) with 7.4% and 1.0% in EXduringAC (n = 18) and EXpostAC (n = 18), respectively, and hsTnT and NT-proBNP significantly increased in both groups, without difference between groups for any parameter. Change in peak VO2 (-1.0 and -1.1 ml/kg/min) at AC-end was also similar between groups as was duration of moderate-to-vigorous PA (MVPA) with a median of 33 [26, 47] min/day and 32 [21, 59] min/day in the EXduringAC and EXpostAC group, respectively. In the robust linear model including the pooled patient population, MVPA was significantly associated with a more negative GLS and lesser increase in hsTnT at AC-end. Conclusion In this small scale RCT, supervised ET during AC was not superior to wearing a PA tracker to mitigate cardiotoxicity. The dose-response relationship between PA and cardioprotective effects during AC found in our and previous data supports the notion that PA should be recommended to patients undergoing AC. Clinical Trial Registration ClinicalTrials.gov, identifier NCT03850171.
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Affiliation(s)
- Caroline Schneider
- Centre for Rehabilitation & Sports Medicine, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
- Graduate School for Health Sciences, University of Bern, Bern, Switzerland
| | - Christoph Ryffel
- Department of Cardiology, Inselspital, Bern University Hospital, Bern, Switzerland
| | - Laura Stütz
- Centre for Rehabilitation & Sports Medicine, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Manuela Rabaglio
- Department of Medical Oncology, Inselspital, Bern University Hospital, Bern, Switzerland
| | - Thomas M. Suter
- Department of Cardiology, Inselspital, Bern University Hospital, Bern, Switzerland
| | - Kristin L. Campbell
- Department of Physical Therapy, Faculty of Medicine, University of British Columbia, Vancouver, BC, Canada
| | - Prisca Eser
- Centre for Rehabilitation & Sports Medicine, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
- Department of Cardiology, Inselspital, Bern University Hospital, Bern, Switzerland
| | - Matthias Wilhelm
- Centre for Rehabilitation & Sports Medicine, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
- Department of Cardiology, Inselspital, Bern University Hospital, Bern, Switzerland
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Murray J, Bennett H, Selva-Nayagam S, Joshi R, Bezak E, Perry R. Impact of Aerobic Training on Cardiovascular Function, Fitness, and Patient Reported Outcomes During Anthracycline Chemotherapy: A Case Series in Women With Breast Cancer. Integr Cancer Ther 2023; 22:15347354231210874. [PMID: 37961905 PMCID: PMC10647937 DOI: 10.1177/15347354231210874] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2023] [Revised: 08/22/2023] [Accepted: 10/13/2023] [Indexed: 11/15/2023] Open
Abstract
BACKGROUND Chemotherapy for breast cancer can increase the risk of cancer therapy related cardiac dysfunction (CTRCD). Exercise has been proposed to prevent CTRCD, however, research to date has indicated high degrees of individual variability following exercise interventions in this population. AIM This study aimed to explore the impact of regular, individualized aerobic exercise on CTRCD incidence (defined by global longitudinal strain [GLS]) during and immediately upon the completion of dose-dense anthracycline (DDAC) chemotherapy in 5 women with breast cancer. METHODS Five women receiving DDAC with stage I-III breast cancer enrolled. Participants underwent resting echocardiography and exercise testing before, during, upon the completion of, and 3 months after the completion of DDAC treatment to measure GLS and aerobic fitness (VO2peak). Participants opted-in to an individualized 8-week aerobic exercise intervention (3 sessions per week, 24 sessions total) or standard care for the duration of their DDAC treatment. Data for each participant were presented descriptively. RESULTS Four of the 5 participants completed the exercise intervention during DDAC treatment (adherence 79.2%-91.7%). Mild asymptomatic CTRCD occurred in 2 of the 4 exercising participants, of whom both were at an increased risk (one was >65 years of age and diagnosed with hypertension, with the other receiving trastuzumab prior to DDAC treatment). Varied responses in VO2peak were observed and did not align with changes in GLS. The only participant not to complete the exercise intervention reported poorer health related quality of life and increased cancer related fatigue at all measurement timepoints. CONCLUSION This study details the individual variability in cardiovascular responses to exercise that can occur during DDAC treatment in women with breast cancer, which can inform exercise professionals and researchers when designing individualized exercise programs for this population.
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Affiliation(s)
- James Murray
- Allied Health and Human Performance, University of South Australia, Adelaide, SA, Australia
| | - Hunter Bennett
- Allied Health and Human Performance, University of South Australia, Adelaide, SA, Australia
| | | | - Rohit Joshi
- Cancer Centre, Lyell McEwin Hospital, Adelaide, SA, Australia
| | - Eva Bezak
- Allied Health and Human Performance, University of South Australia, Adelaide, SA, Australia
- Department of Physics, University of Adelaide, Adelaide, SA, Australia
| | - Rebecca Perry
- Allied Health and Human Performance, University of South Australia, Adelaide, SA, Australia
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