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Sousa BLSC, Dos Santos Rosa T, Silvino VO, Barros EML, de Luca Corrêa H, do Prado DML, Veras-Silva AS, de Souza MD, de Lima CEB, de Oliveira LFL, Dos Santos MAP. Physical and autonomic functionality in women with breast cancer pre and post chemotherapy: a case control study. BMC Sports Sci Med Rehabil 2024; 16:5. [PMID: 38167062 PMCID: PMC10763182 DOI: 10.1186/s13102-023-00797-y] [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: 07/24/2023] [Accepted: 12/19/2023] [Indexed: 01/05/2024]
Abstract
BACKGROUND Breast cancer (BC) is one of the most incident types of cancer among women in the world. Although chemotherapy is an effective way to treat several types of cancer, it may also cause serious complications, including cardiotoxicity. This study aimed to identify the impact of chemotherapy on functional capacity, muscle strength and autonomic function. METHODS Ten breast cancer patients in therapeutic follow-up (TG) and ten women without comorbidities (CG) participated in the study (46±8.87 years old). Both groups were evaluated at two time points, before and 20 weeks after the start of chemotherapy. Functional capacity and muscle strength were assessed by 6-minute walk test (6MWT) and handgrip test, respectively. Autonomic function was assessed by heart rate variability analysis. RESULTS TG presented greater reductions in the handgrip test for the non-dominant hand (TG ↓15.2%; CG: ↑1.1%, p<0.05) compared to GC. However, no significant differences were found regarding VO2max (p>0.05) and 6MWT total distance (p>0.05). Regarding the heart rate variability variables before and after follow-up period, rMSSD (CG= 39.15±37.66; TG= 14.89±8.28, p= 0.01) and SDNN (CG= 55.77±40.03; TG= 26.30±10.37, p= 0.02) showed effect in the group and time interaction, whereas the LF/HF ratio presented significant difference only in the time analysis (CG= 2.24±2.30; TG= 2.84±1.82, p= 0.04). CONCLUSION Chemotherapy used in the treatment of breast cancer patients resulted in decreased muscle strength and autonomic imbalance. The data suggests that chemotherapy may carry the risk of developing cardiovascular disease. TRIAL REGISTRATION Registration not required.
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Affiliation(s)
- Bruna Lorena Soares Cavalcante Sousa
- Nucleus of Study in Physiology Applied to Performance and Health (NEFADS), Federal University of Piaui, Teresina, PI, Brazil.
- Rehabilitation Sciences Program, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil.
- University Federal of Minas Gerais (UFMG), 641 Ministro Pedro Borges Street, Tabuleta, Teresina, PI, 64019650, Brazil.
| | | | - Valmir Oliveira Silvino
- Nucleus of Study in Physiology Applied to Performance and Health (NEFADS), Federal University of Piaui, Teresina, PI, Brazil
- Rede Nordeste de Biotecnologia (RENORBIO), Federal University of Piaui, Teresina, PI, Brazil
| | - Esmeralda Maria Lustosa Barros
- Nucleus of Study in Physiology Applied to Performance and Health (NEFADS), Federal University of Piaui, Teresina, PI, Brazil
- Rede Nordeste de Biotecnologia (RENORBIO), Federal University of Piaui, Teresina, PI, Brazil
- Department of Biophysics and Physiology, Federal University of Piaui, Teresina, PI, Brazil
| | - Hugo de Luca Corrêa
- Department of Physical Education, Catholic University of Brasilia, Brasilia, DF, Brazil
| | | | | | - Mariana Duarte de Souza
- Rehabilitation Sciences Program, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
| | - Carlos Eduardo Batista de Lima
- Clinical Research Center of the University Hospital, Federal University of Piaui, Empresa Brasileira de Serviços Hospitalares (EBSERH), Teresina, PI, Brazil
| | | | - Marcos Antonio Pereira Dos Santos
- Nucleus of Study in Physiology Applied to Performance and Health (NEFADS), Federal University of Piaui, Teresina, PI, Brazil
- Rede Nordeste de Biotecnologia (RENORBIO), Federal University of Piaui, Teresina, PI, Brazil
- Department of Biophysics and Physiology, Federal University of Piaui, Teresina, PI, Brazil
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Geraldes V, Caldeira E, Afonso A, Machado F, Amaro-Leal Â, Laranjo S, Rocha I. Cardiovascular Dysautonomia in Patients with Breast Cancer. Open Cardiovasc Med J 2022. [DOI: 10.2174/18741924-v16-e2206271] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Breast cancer is the most frequent malignant disease among women, being responsible for a considerable percentage of fatalities and comorbidities every year. Despite advances in early detection and therapy, evidence shows that breast cancer survivors are at increased risk of developing other chronic conditions, such as cardiovascular diseases.
Autonomic dysfunction is an emerging, but poorly understood topic that has been suggested as a risk factor for cardiovascular disease in breast cancer patients. It clinically manifests through persistently elevated heart rates and abnormal heart rate variability, even before any signs of cardiovascular dysfunction appear. Since changes in the left ventricular ejection fraction only manifest when myocardial injury has already occurred, it has been hypothesized that autonomic dysfunction can constitute an early biomarker of cardiovascular impairment in breast cancer patients.
This review focuses on the direct and indirect effects of cancer and its treatment on the autonomic nervous system in breast cancer patients. We highlight the mechanisms potentially involved in cancer and antineoplastic therapy-related autonomic imbalance and review the potential strategies to prevent and/or attenuate autonomic dysfunction.
There are gaps in the current knowledge; more research in this area is needed to identify the relevance of autonomic dysfunction and define beneficial interventions to prevent cardiovascular disease in breast cancer patients.
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