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Clinical, Echocardiographic, and Biomarker Associations With Impaired Cardiorespiratory Fitness Early After HER2-Targeted Breast Cancer Therapy. JACC CardioOncol 2021; 3:678-691. [PMID: 34988476 PMCID: PMC8702792 DOI: 10.1016/j.jaccao.2021.08.010] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2021] [Revised: 08/16/2021] [Accepted: 08/20/2021] [Indexed: 01/04/2023] Open
Abstract
Background Cardiorespiratory fitness (CRF) is reduced in cancer survivors and predicts cardiovascular disease (CVD)–related and all-cause mortality. However, routine measurement of CRF is not always feasible. Objectives The purpose of this study was to identify clinical, cardiac biomarker, and imaging measures associated with reduced peak oxygen consumption (VO2peak) (measure of CRF) early post–breast cancer therapy to help inform CVD risk. Methods Consecutive women with early-stage HER2+ breast cancer receiving anthracyclines and trastuzumab were recruited prospectively. Within 6 ± 2 weeks of trastuzumab completion, we collected clinical information, systolic/diastolic echocardiographic measures, high-sensitivity troponin I, B-type natriuretic peptide, and VO2peak using a cycle ergometer. Regression models were used to examine the association between VO2peak and clinical, imaging, and cardiac biomarkers individually and in combination. Results Among 147 patients (age 52.2 ± 9.3 years), the mean VO2peak was 19.1 ± 5.0 mL O2·kg−1·min−1 (84.2% ± 18.7% of predicted); 44% had a VO2peak below threshold for functional independence (<18 mL O2·kg−1·min−1). In multivariable analysis, absolute global longitudinal strain (GLS) (β = 0.58; P = 0.007), age per 10 years (β: -1.61; P = 0.001), and E/e’ (measure of diastolic filling pressures) (β = -0.45; P = 0.038) were associated with VO2peak. GLS added incremental value in explaining the variability in VO2peak. The combination of age ≥50 years, E/e’ ≥7.8, and GLS <18% identified a high probability (85.7%) of compromised functional independence, whereas age <50 years, E/e’ <7.8, and GLS ≥18% identified a low probability (0%). High-sensitivity troponin I and B-type natriuretic peptide were not associated with VO2peak. Conclusions Readily available clinical measures were associated with VO2peak early post–breast cancer therapy. A combination of these parameters had good discrimination to identify patients with compromised functional independence and potentially increased future CVD risk.
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Key Words
- BNP, B-type natriuretic peptide
- CORE, cardio-oncology rehabilitation
- CPET, cardiopulmonary exercise test
- CRF, cardiorespiratory fitness
- CTRCD, cancer therapy–related cardiac dysfunction
- GLS, global longitudinal strain
- LV, left ventricle/ventricular
- LVEF, left ventricular ejection fraction
- LVMi, left ventricular mass index
- VO2peak, peak oxygen consumption
- anthracyclines
- cardiopulmonary exercise testing
- echocardiography
- exercise training
- global longitudinal strain
- hsTnI, high-sensitivity troponin I
- trastuzumab
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Lavín-Pérez AM, Collado-Mateo D, Mayo X, Liguori G, Humphreys L, Copeland RJ, Jiménez A. Effects of high-intensity training on the quality of life of cancer patients and survivors: a systematic review with meta-analysis. Sci Rep 2021; 11:15089. [PMID: 34301995 PMCID: PMC8302720 DOI: 10.1038/s41598-021-94476-y] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2021] [Accepted: 07/07/2021] [Indexed: 12/12/2022] Open
Abstract
Cancer and associated medical treatments affect patients' health-related quality of life (HRQoL) by decreasing functional dimensions of physical, social, cognitive, and emotional well-being, while increasing short and late-term symptoms. Exercise, however, is demonstrated to be a useful therapy to improve cancer patients' and survivors' HRQoL, yet the effectiveness of high-intensity training (HIT) exercise is uncertain. This systematic review and meta-analysis aimed to analyse the effects of HIT on HRQoL dimensions in cancer patients and survivors as well as evaluate the optimal prescription of HIT. The search followed the Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines (PRISMA) and examined Web of Science and PubMed (Medline) databases. Data were analysed utilizing Review Manager Software. Twenty-two articles were included in the systematic review and 17 in the meta-analysis. Results showed HIT improved global quality of life, physical functioning, role functioning, social functioning, cognitive functioning, fatigue, pain, dyspnea, and insomnia, compared to an inactive control group, yet no differences were found between HIT and low to moderate-intensity exercise interventions. Particular improvements in HRQoL were observed during cancer treatment and with a training duration of more than eight weeks, a frequency of 2 days/week, and a volume of at least 120 min/week, including 15 min or more of HIT. Our findings whilst encouraging, highlight the infancy of the extant evidence base for the role of HIT in the HRQoL of cancer patients and survivors.
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Affiliation(s)
- Ana Myriam Lavín-Pérez
- PhD International School, Program of Epidemiology and Public Health (Interuniversity), Rey Juan Carlos University, 28933, Móstoles, Spain
- Centre for Sport Studies, Rey Juan Carlos University, 28943, Fuenlabrada, Spain
- GO fitLAB, Ingesport, 28003, Madrid, Spain
| | - Daniel Collado-Mateo
- Centre for Sport Studies, Rey Juan Carlos University, 28943, Fuenlabrada, Spain.
| | - Xián Mayo
- Centre for Sport Studies, Rey Juan Carlos University, 28943, Fuenlabrada, Spain
| | - Gary Liguori
- University of Rhode Island, Kingston, 02881, USA
| | - Liam Humphreys
- Advanced Wellbeing Research Centre, College of Health, Wellbeing and Life Sciences, Sheffield Hallam University, Sheffield, S9 3TU, UK
| | - Robert James Copeland
- Advanced Wellbeing Research Centre, College of Health, Wellbeing and Life Sciences, Sheffield Hallam University, Sheffield, S9 3TU, UK
| | - Alfonso Jiménez
- Centre for Sport Studies, Rey Juan Carlos University, 28943, Fuenlabrada, Spain
- GO fitLAB, Ingesport, 28003, Madrid, Spain
- Advanced Wellbeing Research Centre, College of Health, Wellbeing and Life Sciences, Sheffield Hallam University, Sheffield, S9 3TU, UK
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3
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Kanegusuku H, Peçanha T, Silva-Batista C, Miyasato RS, Silva Júnior NDD, Mello MTD, Piemonte MEP, Ugrinowitsch C, Forjaz CLDM. Effects of resistance training on metabolic and cardiovascular responses to a maximal cardiopulmonary exercise test in Parkinson`s disease. EINSTEIN-SAO PAULO 2021; 19:eAO5940. [PMID: 33886934 PMCID: PMC8051939 DOI: 10.31744/einstein_journal/2021ao5940] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2020] [Accepted: 12/05/2020] [Indexed: 11/16/2022] Open
Abstract
Objective: To evaluate the effects of resistance training on metabolic and cardiovascular responses during maximal cardiopulmonary exercise testing in patients with Parkinson’s disease. Methods: Twenty-four patients with Parkinson’s disease (modified Hoehn and Yahr stages 2 to 3) were randomly assigned to one of two groups: Control or Resistance Training. Patients in the Resistance Training Group completed an exercise program consisting of five resistance exercises (two to four sets of six to 12 repetitions maximum per set) twice a week. Patients in the Control Group maintained their usual lifestyle. Oxygen uptake, systolic blood pressure and heart rate were assessed at rest and during cycle ergometer-based maximal cardiopulmonary exercise testing at baseline and at 12 weeks. Assessments during exercise were conducted at absolute submaximal intensity (slope of the linear regression line between physiological variables and absolute workloads), at relative submaximal intensity (anaerobic threshold and respiratory compensation point) and at maximal intensity (maximal exercise). Muscle strength was also evaluated. Results: Both groups had similar increase in peak oxygen uptake after 12 weeks of training. Heart rate and systolic blood pressure measured at absolute and relative submaximal intensities and at maximal exercise intensity did not change in any of the groups. Muscle strength increased in the Resistance Training but not in the Control Group after 12 weeks. Conclusion: Resistance training increases muscle strength but does not change metabolic and cardiovascular responses during maximal cardiopulmonary exercise testing in patients with Parkinson’s disease without cardiovascular comorbidities.
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Yu AF, Flynn JR, Moskowitz CS, Scott JM, Oeffinger KC, Dang CT, Liu JE, Jones LW, Steingart RM. Long-term Cardiopulmonary Consequences of Treatment-Induced Cardiotoxicity in Survivors of ERBB2-Positive Breast Cancer. JAMA Cardiol 2021; 5:309-317. [PMID: 31939997 DOI: 10.1001/jamacardio.2019.5586] [Citation(s) in RCA: 34] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Importance Trastuzumab improves outcomes in patients with ERBB2-positive (formerly HER2) breast cancer but is associated with treatment-induced cardiotoxicity, most commonly manifest by an asymptomatic decline in left ventricular ejection fraction (LVEF). Little is known to date regarding the long-term effects of treatment-induced cardiotoxicity on cardiopulmonary function in patients who survive trastuzumab-treated breast cancer. Objective To determine whether treatment-induced cardiotoxicity recovers or is associated with long-term cardiopulmonary dysfunction in survivors of ERBB2-positive breast cancer. Design, Setting, and Participants This cross-sectional case-control study enrolled patients with nonmetastatic ERBB2-positive breast cancer after completion of trastuzumab-based therapy (median, 7.0 [interquartile range (IQR), 6.2-8.7] years after therapy) who met 1 of 2 criteria: (1) cardiotoxicity (TOX group) developed during trastuzumab treatment (ie, asymptomatic decrease of LVEF≥10% from baseline to <55% [n = 22]) or (2) no evidence of cardiotoxicity during trastuzumab treatment (NOTOX group [n = 20]). Patients were treated at the Memorial Sloan Kettering Cancer Center. Fifteen healthy control participants (HC group) were also enrolled for comparison purposes. All groups were frequency matched by age strata (<55, 55-64, and ≥65 years). Data were collected from September 9, 2016, to August 10, 2018, and analyzed from November 20, 2018, to August 12, 2019. Main Outcomes and Measures Speckle-tracking echocardiography and maximal cardiopulmonary exercise testing were performed to measure indices of left ventricular function (including LVEF and global longitudinal strain [GLS]) and peak oxygen consumption (peak VO2). Results A total of 57 participants (median age, 60.8 [IQR, 52.7-65.7] years) were included in the analysis. Overall, 38 of 42 patients with breast cancer (90%) were treated with anthracyclines before trastuzumab. Resting mean (SD) LVEF was significantly lower in the TOX group (56.9% [5.2%]) compared with the NOTOX (62.4% [4.0%]) and HC (65.3% [2.9%]) groups; similar results were found for GLS (TOX group, -17.8% [2.2%]; NOTOX group, -19.8% [2.2%]; HC group, -21.3% [1.8%]) (P < .001). Mean peak VO2 in the TOX group (22.9 [4.4] mL/kg/min) was 15% lower compared with the NOTOX group (27.0 [5.3] mL/kg/min; P = .03) and 25% lower compared with the HC group (30.5 [3.4] mL/ kg/min; P < .001). In patients with breast cancer, GLS was significantly associated with peak VO2 (β coefficient, -0.75; 95% CI, -1.32 to -0.18). Conclusions and Relevance Treatment-induced cardiotoxicity appears to be associated with long-term marked impairment of cardiopulmonary function and may contribute to increased risk of late-occurring cardiovascular disease in survivors of ERBB2-positive breast cancer.
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Affiliation(s)
- Anthony F Yu
- Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, New York.,Weill Cornell Medical College, New York, New York
| | - Jessica R Flynn
- Department of Epidemiology and Biostatistics, Memorial Sloan Kettering Cancer Center, New York, New York
| | - Chaya S Moskowitz
- Department of Epidemiology and Biostatistics, Memorial Sloan Kettering Cancer Center, New York, New York
| | - Jessica M Scott
- Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, New York.,Weill Cornell Medical College, New York, New York
| | | | - Chau T Dang
- Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, New York.,Weill Cornell Medical College, New York, New York
| | - Jennifer E Liu
- Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, New York.,Weill Cornell Medical College, New York, New York
| | - Lee W Jones
- Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, New York.,Weill Cornell Medical College, New York, New York
| | - Richard M Steingart
- Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, New York.,Weill Cornell Medical College, New York, New York
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5
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Maginador G, Lixandrão ME, Bortolozo HI, Vechin FC, Sarian LO, Derchain S, Telles GD, Zopf E, Ugrinowitsch C, Conceição MS. Aerobic Exercise-Induced Changes in Cardiorespiratory Fitness in Breast Cancer Patients Receiving Chemotherapy: A Systematic Review and Meta-Analysis. Cancers (Basel) 2020; 12:cancers12082240. [PMID: 32796499 PMCID: PMC7463807 DOI: 10.3390/cancers12082240] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2020] [Revised: 07/21/2020] [Accepted: 07/30/2020] [Indexed: 12/20/2022] Open
Abstract
While performing aerobic exercise during chemotherapy has been proven feasible and safe, the efficacy of aerobic training on cardiorespiratory fitness (CRF) in women with breast cancer undergoing chemotherapy has not yet been systematically assessed. Therefore, the objective of this work was to determine (a) the efficacy of aerobic training to improve CRF; (b) the role of aerobic training intensity (moderate or vigorous) on CRF response; (c) the effect of the aerobic training mode (continuous or interval) on changes in CRF in women with breast cancer (BC) receiving chemotherapy. A systematic review and meta-analysis were conducted as per PRISMA guidelines, and randomized controlled trials comparing usual care (UC) and aerobic training in women with BC undergoing chemotherapy were eligible. The results suggest that increases in CRF are favored by (a) aerobic training when compared to usual care; (b) vigorous-intensity aerobic exercise (64–90% of maximal oxygen uptake, VO2max) when compared to moderate-intensity aerobic exercise (46–63% of VO2max); and (c) both continuous and interval aerobic training are effective at increasing the VO2max. Aerobic training improves CRF in women with BC undergoing chemotherapy. Notably, training intensity significantly impacts the VO2max response. Where appropriate, vigorous intensity aerobic training should be considered for women with BC receiving chemotherapy.
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Affiliation(s)
- Guilherme Maginador
- Department of Obstetrics and Gynecology, Faculty of Medical Sciences, University of Campinas, Campinas, São Paulo 13083-881, Brazil; (G.M.); (H.I.B.); (L.O.S.); (S.D.)
| | - Manoel E. Lixandrão
- School of Physical Education and Sport, University of São Paulo, São Paulo 05508-030, Brazil; (M.E.L.); (F.C.V.); (G.D.T.); (C.U.)
| | - Henrique I. Bortolozo
- Department of Obstetrics and Gynecology, Faculty of Medical Sciences, University of Campinas, Campinas, São Paulo 13083-881, Brazil; (G.M.); (H.I.B.); (L.O.S.); (S.D.)
| | - Felipe C. Vechin
- School of Physical Education and Sport, University of São Paulo, São Paulo 05508-030, Brazil; (M.E.L.); (F.C.V.); (G.D.T.); (C.U.)
| | - Luís O. Sarian
- Department of Obstetrics and Gynecology, Faculty of Medical Sciences, University of Campinas, Campinas, São Paulo 13083-881, Brazil; (G.M.); (H.I.B.); (L.O.S.); (S.D.)
| | - Sophie Derchain
- Department of Obstetrics and Gynecology, Faculty of Medical Sciences, University of Campinas, Campinas, São Paulo 13083-881, Brazil; (G.M.); (H.I.B.); (L.O.S.); (S.D.)
| | - Guilherme D. Telles
- School of Physical Education and Sport, University of São Paulo, São Paulo 05508-030, Brazil; (M.E.L.); (F.C.V.); (G.D.T.); (C.U.)
| | - Eva Zopf
- Department of Exercise Oncology, Mary MacKillop Institute for Health Research, Australian Catholic University, Melbourne 3000, Australia;
| | - Carlos Ugrinowitsch
- School of Physical Education and Sport, University of São Paulo, São Paulo 05508-030, Brazil; (M.E.L.); (F.C.V.); (G.D.T.); (C.U.)
| | - Miguel S. Conceição
- Department of Obstetrics and Gynecology, Faculty of Medical Sciences, University of Campinas, Campinas, São Paulo 13083-881, Brazil; (G.M.); (H.I.B.); (L.O.S.); (S.D.)
- School of Physical Education and Sport, University of São Paulo, São Paulo 05508-030, Brazil; (M.E.L.); (F.C.V.); (G.D.T.); (C.U.)
- Faculty of Physical Education, University of Campinas, Campinas 13083-851, Brazil
- Correspondence: ; Tel.: +55-11-3091-8733
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6
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Scott JM, Zabor EC, Schwitzer E, Koelwyn GJ, Adams SC, Nilsen TS, Moskowitz CS, Matsoukas K, Iyengar NM, Dang CT, Jones LW. Efficacy of Exercise Therapy on Cardiorespiratory Fitness in Patients With Cancer: A Systematic Review and Meta-Analysis. J Clin Oncol 2018; 36:2297-2305. [PMID: 29894274 DOI: 10.1200/jco.2017.77.5809] [Citation(s) in RCA: 171] [Impact Index Per Article: 28.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Purpose To evaluate the effects of exercise therapy on cardiorespiratory fitness (CRF) in randomized controlled trials (RCTs) among patients with adult-onset cancer. Secondary objectives were to evaluate treatment effect modifiers, safety, and fidelity. Methods A systematic search of PubMed, Embase, Cumulative Index to Nursing and Allied Health Literature, and the Cochrane Library was conducted to identify RCTs that compared exercise therapy to a nonexercise control group. The primary end point was change in CRF as evaluated by peak oxygen consumption (VO2peak; in mL O2 × kg-1 × min-1) from baseline to postintervention. Subgroup analyses evaluated whether treatment effects differed as a function of exercise prescription (ie, modality, schedule, length, supervision), study characteristics (ie, intervention timing, primary cancer site), and publication year. Safety was defined as report of any adverse event (AE); fidelity was evaluated by rates of attendance, adherence, and loss to follow-up. Results Forty-eight unique RCTs that represented 3,632 patients (mean standard deviation age, 55 ± 7.5 years; 68% women); 1,990 (55%) and 1,642 (45%) allocated to exercise therapy and control/usual care groups, respectively, were evaluated. Exercise therapy was associated with a significant increase in CRF (+2.80 mL O2 × kg-1 × min-1) compared with no change (+0.02 mL O2 × kg-1 × min-1) in the control group (weighted mean differences, +2.13 mL O2 × kg-1 × min-1; 95% CI, 1.58 to 2.67; I2, 20.6; P < .001). No statistical significant differences were observed on the basis of any treatment effect modifiers. Thirty trials (63%) monitored AEs; a total of 44 AEs were reported. The mean standard deviation loss to follow-up, attendance, and adherence rates were 11% ± 13%, 84% ± 12%, and 88% ± 32%, respectively. Conclusion Exercise therapy is an effective adjunctive therapy to improve CRF in patients with cancer. Our findings support the recommendation of exercise therapy for patients with adult-onset cancer.
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Affiliation(s)
- Jessica M Scott
- Jessica M. Scott, Emily C. Zabor, Scott C. Adams, Chaya S. Moskowitz, Konstantina Matsoukas, Neil M. Iyengar, Chau T. Dang, Lee W. Jones, Memorial Sloan Kettering Cancer Center; Graeme J. Koelwyn, New York University Langone Medical Center; and Chaya S. Moskowitz, Neil M. Iyengar, Chau T. Dang, Lee W. Jones, Weill Cornell Medical College, New York, NY; Emily Schwitzer, Duke University Medical Center, Durham, NC; and Tormod S. Nilsen, The Norwegian School of Sport Sciences, Oslo, Norway
| | - Emily C Zabor
- Jessica M. Scott, Emily C. Zabor, Scott C. Adams, Chaya S. Moskowitz, Konstantina Matsoukas, Neil M. Iyengar, Chau T. Dang, Lee W. Jones, Memorial Sloan Kettering Cancer Center; Graeme J. Koelwyn, New York University Langone Medical Center; and Chaya S. Moskowitz, Neil M. Iyengar, Chau T. Dang, Lee W. Jones, Weill Cornell Medical College, New York, NY; Emily Schwitzer, Duke University Medical Center, Durham, NC; and Tormod S. Nilsen, The Norwegian School of Sport Sciences, Oslo, Norway
| | - Emily Schwitzer
- Jessica M. Scott, Emily C. Zabor, Scott C. Adams, Chaya S. Moskowitz, Konstantina Matsoukas, Neil M. Iyengar, Chau T. Dang, Lee W. Jones, Memorial Sloan Kettering Cancer Center; Graeme J. Koelwyn, New York University Langone Medical Center; and Chaya S. Moskowitz, Neil M. Iyengar, Chau T. Dang, Lee W. Jones, Weill Cornell Medical College, New York, NY; Emily Schwitzer, Duke University Medical Center, Durham, NC; and Tormod S. Nilsen, The Norwegian School of Sport Sciences, Oslo, Norway
| | - Graeme J Koelwyn
- Jessica M. Scott, Emily C. Zabor, Scott C. Adams, Chaya S. Moskowitz, Konstantina Matsoukas, Neil M. Iyengar, Chau T. Dang, Lee W. Jones, Memorial Sloan Kettering Cancer Center; Graeme J. Koelwyn, New York University Langone Medical Center; and Chaya S. Moskowitz, Neil M. Iyengar, Chau T. Dang, Lee W. Jones, Weill Cornell Medical College, New York, NY; Emily Schwitzer, Duke University Medical Center, Durham, NC; and Tormod S. Nilsen, The Norwegian School of Sport Sciences, Oslo, Norway
| | - Scott C Adams
- Jessica M. Scott, Emily C. Zabor, Scott C. Adams, Chaya S. Moskowitz, Konstantina Matsoukas, Neil M. Iyengar, Chau T. Dang, Lee W. Jones, Memorial Sloan Kettering Cancer Center; Graeme J. Koelwyn, New York University Langone Medical Center; and Chaya S. Moskowitz, Neil M. Iyengar, Chau T. Dang, Lee W. Jones, Weill Cornell Medical College, New York, NY; Emily Schwitzer, Duke University Medical Center, Durham, NC; and Tormod S. Nilsen, The Norwegian School of Sport Sciences, Oslo, Norway
| | - Tormod S Nilsen
- Jessica M. Scott, Emily C. Zabor, Scott C. Adams, Chaya S. Moskowitz, Konstantina Matsoukas, Neil M. Iyengar, Chau T. Dang, Lee W. Jones, Memorial Sloan Kettering Cancer Center; Graeme J. Koelwyn, New York University Langone Medical Center; and Chaya S. Moskowitz, Neil M. Iyengar, Chau T. Dang, Lee W. Jones, Weill Cornell Medical College, New York, NY; Emily Schwitzer, Duke University Medical Center, Durham, NC; and Tormod S. Nilsen, The Norwegian School of Sport Sciences, Oslo, Norway
| | - Chaya S Moskowitz
- Jessica M. Scott, Emily C. Zabor, Scott C. Adams, Chaya S. Moskowitz, Konstantina Matsoukas, Neil M. Iyengar, Chau T. Dang, Lee W. Jones, Memorial Sloan Kettering Cancer Center; Graeme J. Koelwyn, New York University Langone Medical Center; and Chaya S. Moskowitz, Neil M. Iyengar, Chau T. Dang, Lee W. Jones, Weill Cornell Medical College, New York, NY; Emily Schwitzer, Duke University Medical Center, Durham, NC; and Tormod S. Nilsen, The Norwegian School of Sport Sciences, Oslo, Norway
| | - Konstantina Matsoukas
- Jessica M. Scott, Emily C. Zabor, Scott C. Adams, Chaya S. Moskowitz, Konstantina Matsoukas, Neil M. Iyengar, Chau T. Dang, Lee W. Jones, Memorial Sloan Kettering Cancer Center; Graeme J. Koelwyn, New York University Langone Medical Center; and Chaya S. Moskowitz, Neil M. Iyengar, Chau T. Dang, Lee W. Jones, Weill Cornell Medical College, New York, NY; Emily Schwitzer, Duke University Medical Center, Durham, NC; and Tormod S. Nilsen, The Norwegian School of Sport Sciences, Oslo, Norway
| | - Neil M Iyengar
- Jessica M. Scott, Emily C. Zabor, Scott C. Adams, Chaya S. Moskowitz, Konstantina Matsoukas, Neil M. Iyengar, Chau T. Dang, Lee W. Jones, Memorial Sloan Kettering Cancer Center; Graeme J. Koelwyn, New York University Langone Medical Center; and Chaya S. Moskowitz, Neil M. Iyengar, Chau T. Dang, Lee W. Jones, Weill Cornell Medical College, New York, NY; Emily Schwitzer, Duke University Medical Center, Durham, NC; and Tormod S. Nilsen, The Norwegian School of Sport Sciences, Oslo, Norway
| | - Chau T Dang
- Jessica M. Scott, Emily C. Zabor, Scott C. Adams, Chaya S. Moskowitz, Konstantina Matsoukas, Neil M. Iyengar, Chau T. Dang, Lee W. Jones, Memorial Sloan Kettering Cancer Center; Graeme J. Koelwyn, New York University Langone Medical Center; and Chaya S. Moskowitz, Neil M. Iyengar, Chau T. Dang, Lee W. Jones, Weill Cornell Medical College, New York, NY; Emily Schwitzer, Duke University Medical Center, Durham, NC; and Tormod S. Nilsen, The Norwegian School of Sport Sciences, Oslo, Norway
| | - Lee W Jones
- Jessica M. Scott, Emily C. Zabor, Scott C. Adams, Chaya S. Moskowitz, Konstantina Matsoukas, Neil M. Iyengar, Chau T. Dang, Lee W. Jones, Memorial Sloan Kettering Cancer Center; Graeme J. Koelwyn, New York University Langone Medical Center; and Chaya S. Moskowitz, Neil M. Iyengar, Chau T. Dang, Lee W. Jones, Weill Cornell Medical College, New York, NY; Emily Schwitzer, Duke University Medical Center, Durham, NC; and Tormod S. Nilsen, The Norwegian School of Sport Sciences, Oslo, Norway
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7
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Abstract
Cardio-oncology is an emerging discipline focused predominantly on the detection and management of cancer treatment-induced cardiac dysfunction (cardiotoxicity), which predisposes to development of overt heart failure or coronary artery disease. The direct adverse consequences, as well as those secondary to anticancer therapeutics, extend beyond the heart, however, to affect the entire cardiovascular-skeletal muscle axis (ie, whole-organism cardiovascular toxicity). The global nature of impairment creates a strong rationale for treatment strategies that augment or preserve global cardiovascular reserve capacity. In noncancer clinical populations, exercise training is an established therapy to improve cardiovascular reserve capacity, leading to concomitant reductions in cardiovascular morbidity and its attendant symptoms. Here, we overview the tolerability and efficacy of exercise on cardiovascular toxicity in adult patients with cancer. We also propose a conceptual research framework to facilitate personalized risk assessment and the development of targeted exercise prescriptions to optimally prevent or manage cardiovascular toxicity after a cancer diagnosis.
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Affiliation(s)
- Jessica M Scott
- Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY (J.M.S., D.G., L.W.H.).
| | - Tormod S Nilsen
- Department of Physical Performance, Norwegian School of Sports Sciences, Oslo, Norway (T.S.N.)
| | - Dipti Gupta
- Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY (J.M.S., D.G., L.W.H.)
| | - Lee W Jones
- Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY (J.M.S., D.G., L.W.H.)
- Weill Cornell Medical College, New York, NY (J.L.W.J.)
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8
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Santa Mina D, Au D, Brunet J, Jones J, Tomlinson G, Taback N, Field D, Berlingeri A, Bradley H, Howell D. Effects of the community-based Wellspring Cancer Exercise Program on functional and psychosocial outcomes in cancer survivors. ACTA ACUST UNITED AC 2017; 24:284-294. [PMID: 29089795 DOI: 10.3747/co.23.3585] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
PURPOSE In this study, we examined the effects of a 30-week community-based exercise program on cancer-related fatigue, quality of life, and other health-related outcomes in a sample of adults with mixed cancer diagnoses. METHODS This prospective cohort study looked at outcomes for participants involved in the Wellspring Cancer Exercise Program in southern Ontario. The program consisted of an initial phase of two supervised sessions weekly for 10 weeks and a transition phase of one supervised session weekly for the subsequent 20 weeks. Outcomes were measured at baseline and every 10 weeks throughout the intervention, as well as at 16 weeks after program completion. RESULTS During a period of 13 months, 229 of the 355 cancer survivors who enrolled in the exercise program consented to participate in the study. Participants attended 71% of the supervised exercise sessions in the initial phase and 49% in the transition phase. From baseline to the end of the initial phase, significant improvements in cancer-related fatigue, 6-minute walk test, social well-being, systolic blood pressure, balance, and physical activity volume were observed. During the transition phase, health-related quality of life and emotional well-being improved significantly. CONCLUSIONS The Wellspring Cancer Exercise Program is associated with clinically meaningful improvements in cancer-related fatigue and functional aerobic capacity. Several other aspects of well-being in cancer survivors also improved for participants in the program. Community-based cancer exercise programs such as the Wellspring Cancer Exercise Program can improve well-being for cancer survivors and can provide an effective option that enhances sustainability and accessibility to exercise services for this population.
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Affiliation(s)
- D Santa Mina
- University of Toronto and.,University Health Network, Toronto, ON
| | - D Au
- University of Toronto and.,University Health Network, Toronto, ON
| | - J Brunet
- University of Ottawa, Ottawa, ON
| | - J Jones
- University of Toronto and.,University Health Network, Toronto, ON
| | - G Tomlinson
- University of Toronto and.,University Health Network, Toronto, ON
| | | | | | | | - H Bradley
- Wellspring Cancer Support Network, ON
| | - D Howell
- University of Toronto and.,University Health Network, Toronto, ON
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9
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Santa Mina D, Au D, Brunet J, Jones J, Tomlinson G, Taback N, Field D, Berlingeri A, Bradley H, Howell D. Effects of the community-based Wellspring Cancer Exercise Program on functional and psychosocial outcomes in cancer survivors. ACTA ACUST UNITED AC 2017. [PMID: 29089795 DOI: 10.3747/co.24.3585] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
PURPOSE In this study, we examined the effects of a 30-week community-based exercise program on cancer-related fatigue, quality of life, and other health-related outcomes in a sample of adults with mixed cancer diagnoses. METHODS This prospective cohort study looked at outcomes for participants involved in the Wellspring Cancer Exercise Program in southern Ontario. The program consisted of an initial phase of two supervised sessions weekly for 10 weeks and a transition phase of one supervised session weekly for the subsequent 20 weeks. Outcomes were measured at baseline and every 10 weeks throughout the intervention, as well as at 16 weeks after program completion. RESULTS During a period of 13 months, 229 of the 355 cancer survivors who enrolled in the exercise program consented to participate in the study. Participants attended 71% of the supervised exercise sessions in the initial phase and 49% in the transition phase. From baseline to the end of the initial phase, significant improvements in cancer-related fatigue, 6-minute walk test, social well-being, systolic blood pressure, balance, and physical activity volume were observed. During the transition phase, health-related quality of life and emotional well-being improved significantly. CONCLUSIONS The Wellspring Cancer Exercise Program is associated with clinically meaningful improvements in cancer-related fatigue and functional aerobic capacity. Several other aspects of well-being in cancer survivors also improved for participants in the program. Community-based cancer exercise programs such as the Wellspring Cancer Exercise Program can improve well-being for cancer survivors and can provide an effective option that enhances sustainability and accessibility to exercise services for this population.
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Affiliation(s)
- D Santa Mina
- University of Toronto and.,University Health Network, Toronto, ON
| | - D Au
- University of Toronto and.,University Health Network, Toronto, ON
| | - J Brunet
- University of Ottawa, Ottawa, ON
| | - J Jones
- University of Toronto and.,University Health Network, Toronto, ON
| | - G Tomlinson
- University of Toronto and.,University Health Network, Toronto, ON
| | | | | | | | - H Bradley
- Wellspring Cancer Support Network, ON
| | - D Howell
- University of Toronto and.,University Health Network, Toronto, ON
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10
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Kampshoff CS, Chinapaw MJM, Brug J, Twisk JWR, Schep G, Nijziel MR, van Mechelen W, Buffart LM. Randomized controlled trial of the effects of high intensity and low-to-moderate intensity exercise on physical fitness and fatigue in cancer survivors: results of the Resistance and Endurance exercise After ChemoTherapy (REACT) study. BMC Med 2015; 13:275. [PMID: 26515383 PMCID: PMC4625937 DOI: 10.1186/s12916-015-0513-2] [Citation(s) in RCA: 118] [Impact Index Per Article: 13.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/02/2015] [Accepted: 10/12/2015] [Indexed: 12/19/2022] Open
Abstract
BACKGROUND International evidence-based guidelines recommend physical exercise to form part of standard care for all cancer survivors. However, at present, the optimum exercise intensity is unclear. Therefore, we aimed to evaluate the effectiveness of a high intensity (HI) and low-to-moderate intensity (LMI) resistance and endurance exercise program compared with a wait list control (WLC) group on physical fitness and fatigue in a mixed group of cancer survivors who completed primary cancer treatment, including chemotherapy. METHODS Overall, 277 cancer survivors were randomized to 12 weeks of HI exercise (n = 91), LMI exercise (n = 95), or WLC (n = 91). Both interventions were identical with respect to exercise type, duration and frequency, and only differed in intensity. Measurements were performed at baseline (4-6 weeks after primary treatment) and post-intervention. The primary outcomes were cardiorespiratory fitness (peakVO2), muscle strength (grip strength and 30-second chair-stand test), and self-reported fatigue (Multidimensional Fatigue Inventory; MFI). Secondary outcomes included health-related quality of life, physical activity, daily functioning, body composition, mood, and sleep disturbances. Multilevel linear regression analyses were performed to estimate intervention effects using an intention-to-treat principle. RESULTS In the HI and LMI groups, 74 % and 70 % of the participants attended more than 80 % of the prescribed exercise sessions, respectively (P = 0.53). HI (β = 2.2; 95 % CI, 1.2-3.1) and LMI (β = 1.3; 95 % CI, 0.3-2.3) exercise showed significantly larger improvements in peakVO2 compared to WLC. Improvements in peakVO2 were larger for HI than LMI exercise (β = 0.9; 95 % CI, -0.1 to 1.9), but the difference was not statistically significant (P = 0.08). No intervention effects were found for grip strength and the 30-second chair-stand test. HI and LMI exercise significantly reduced general and physical fatigue and reduced activity (MFI subscales) compared to WLC, with no significant differences between both interventions. Finally, compared to WLC, we found benefits in global quality of life and anxiety after HI exercise, improved physical functioning after HI and LMI exercise, and less problems at work after LMI exercise. CONCLUSIONS Shortly after completion of cancer treatment, both HI and LMI exercise were safe and effective. There may be a dose-response relationship between exercise intensity and peakVO2, favoring HI exercise. HI and LMI exercise were equally effective in reducing general and physical fatigue. TRIAL REGISTRATION This study was registered at the Netherlands Trial Register [ NTR2153 ] on the 5th of January 2010.
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Affiliation(s)
- Caroline S Kampshoff
- VU University Medical Center, Department of Public & Occupational Health, and the EMGO Institute for Health and Care Research, Amsterdam, The Netherlands.
| | - Mai J M Chinapaw
- VU University Medical Center, Department of Public & Occupational Health, and the EMGO Institute for Health and Care Research, Amsterdam, The Netherlands.
| | - Johannes Brug
- VU University Medical Center, Department of Epidemiology and Biostatistics and the EMGO Institute for Health and Care Research, De Boelelaan 1089a, 1081 HV, Amsterdam, The Netherlands.
| | - Jos W R Twisk
- VU University Medical Center, Department of Epidemiology and Biostatistics and the EMGO Institute for Health and Care Research, De Boelelaan 1089a, 1081 HV, Amsterdam, The Netherlands.
| | - Goof Schep
- Máxima Medical Center, Department of Sports Medicine, Veldhoven, The Netherlands.
| | - Marten R Nijziel
- Máxima Oncology Center, Eindhoven and Veldhoven, The Netherlands.
| | - Willem van Mechelen
- VU University Medical Center, Department of Public & Occupational Health, and the EMGO Institute for Health and Care Research, Amsterdam, The Netherlands.
| | - Laurien M Buffart
- VU University Medical Center, Department of Epidemiology and Biostatistics and the EMGO Institute for Health and Care Research, De Boelelaan 1089a, 1081 HV, Amsterdam, The Netherlands.
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11
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Running away from side effects: physical exercise as a complementary intervention for breast cancer patients. Clin Transl Oncol 2014; 17:180-96. [PMID: 24894838 DOI: 10.1007/s12094-014-1184-8] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2014] [Accepted: 04/11/2014] [Indexed: 10/25/2022]
Abstract
The number of breast cancer survivors increases every year, thanks to the development of new treatments and screening techniques. However, patients present with numerous side effects that may affect their quality of life. Exercise has been demonstrated to reduce some of these side effects, but in spite of this, few breast cancer patients know and follow the exercise recommendations needed to remain healthy. In this review, we describe the different breast cancer treatments and the related side effects and implications of exercise in relation to these. We propose that exercise could be an integrative complementary intervention to improve physiological, physical and psychological factors that affect survival and quality of life of these patients. For that reason, the main objective of this review is to provide a general overview of exercise benefits in breast cancer patients and recommendations of how to design exercise interventions in patients with different side effects.
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12
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Jones LW, Liang Y, Pituskin EN, Battaglini CL, Scott JM, Hornsby WE, Haykowsky M. Effect of exercise training on peak oxygen consumption in patients with cancer: a meta-analysis. Oncologist 2011; 16:112-20. [PMID: 21212429 DOI: 10.1634/theoncologist.2010-0197] [Citation(s) in RCA: 199] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
BACKGROUND We conducted a meta-analysis to determine the effects of supervised exercise training on peak oxygen consumption (VO(2peak)) in adults with cancer. METHODS A literature review using Ovid MEDLINE (1950-2010), the Cochrane Central Register of Controlled Trials (1991-2010), AMED (1985-2010), Embase (1988-2010), PubMed (1966-2010), Scopus (1950-2010), and Web of Science (1950-2010) was performed to identify randomized controlled trials examining the effects of supervised exercise training on measurement of VO(2peak) (via gas exchange analysis) in adults with cancer. Studies were selected using predetermined criteria, and two independent reviewers extracted data. Weighted mean differences (WMDs) were calculated using random effect models. RESULTS Six studies evaluated VO(2peak) involving a total of 571 adult cancer patients (exercise, n = 344; usual care control, n = 227). Pooled data indicated that exercise training was associated with a statistically significant increase in VO(2peak) (WMD, 2.90 ml·kg(-1)·min(-1); 95% confidence interval [CI], 1.16-4.64); however, significant heterogeneity was evident in this estimate (I(2), 87%). Usual care (control) was associated with a significant decline in VO(2peak) from baseline to postintervention (WMD, -1.02 ml·kg(-1)·min(-1); 95% CI, -1.46 to -0.58; I(2), 22%). Sensitivity analyses indicated superior improvements in VO(2peak) for studies conducted for a shorter duration (<4 months) and following the completion of adjuvant therapy (p-values < .001). Exercise training was not associated with a higher incidence of adverse events, although safety was not rigorously monitored or reported. CONCLUSIONS Supervised exercise training is associated with significant improvements in VO(2peak) following a diagnosis of early-stage cancer, with minimal adverse events.
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Affiliation(s)
- Lee W Jones
- Box 3085, Department of Radiation Oncology, Duke University Medical Center, Durham, North Carolina 27710, USA.
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13
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Abstract
OPThe benefits of exercise in patients with chronic disease have been studied extensively over the last half century. In contrast, investigation of the role of exercise following a diagnosis of cancer has received comparably less attention. In this article, we review the efficacy of exercise training in specific areas across the cancer survivorship continuum [i.e., pre-surgery, post-surgery during adjuvant therapy, following the completion of primary adjuvant therapy (survivorship), and palliation], with a view toward future research. The current evidence base provides strong but preliminary evidence that exercise training is a well-tolerated and safe adjunct therapy that can mitigate several common treatment-related side-effects among cancer patients with early disease both during and following adjuvant therapy although many questions remain unanswered. Preliminary evidence in this area supports that exercise therapy may be an important consideration in multidisciplinary management of patients following a cancer diagnosis.
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14
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Rationale and design of the Exercise Intensity Trial (EXCITE): A randomized trial comparing the effects of moderate versus moderate to high-intensity aerobic training in women with operable breast cancer. BMC Cancer 2010; 10:531. [PMID: 20925920 PMCID: PMC2965727 DOI: 10.1186/1471-2407-10-531] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2010] [Accepted: 10/06/2010] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND The Exercise Intensity Trial (EXcITe) is a randomized trial to compare the efficacy of supervised moderate-intensity aerobic training to moderate to high-intensity aerobic training, relative to attention control, on aerobic capacity, physiologic mechanisms, patient-reported outcomes, and biomarkers in women with operable breast cancer following the completion of definitive adjuvant therapy. METHODS/DESIGN Using a single-center, randomized design, 174 postmenopausal women (58 patients/study arm) with histologically confirmed, operable breast cancer presenting to Duke University Medical Center (DUMC) will be enrolled in this trial following completion of primary therapy (including surgery, radiation therapy, and chemotherapy). After baseline assessments, eligible participants will be randomized to one of two supervised aerobic training interventions (moderate-intensity or moderate/high-intensity aerobic training) or an attention-control group (progressive stretching). The aerobic training interventions will include 150 mins.wk⁻¹ of supervised treadmill walking per week at an intensity of 60%-70% (moderate-intensity) or 60% to 100% (moderate to high-intensity) of the individually determined peak oxygen consumption (VO₂peak) between 20-45 minutes/session for 16 weeks. The progressive stretching program will be consistent with the exercise interventions in terms of program length (16 weeks), social interaction (participants will receive one-on-one instruction), and duration (20-45 mins/session). The primary study endpoint is VO₂peak, as measured by an incremental cardiopulmonary exercise test. Secondary endpoints include physiologic determinants that govern VO₂peak, patient-reported outcomes, and biomarkers associated with breast cancer recurrence/mortality. All endpoints will be assessed at baseline and after the intervention (16 weeks). DISCUSSION EXCITE is designed to investigate the intensity of aerobic training required to induce optimal improvements in VO₂peak and other pertinent outcomes in women who have completed definitive adjuvant therapy for operable breast cancer. Overall, this trial will inform and refine exercise guidelines to optimize recovery in breast and other cancer survivors following the completion of primary cytotoxic therapy. TRIAL REGISTRATION NCT01186367.
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15
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Wiggins MS, Simonavice EM. Cancer prevention, aerobic capacity, and physical functioning in survivors related to physical activity: a recent review. Cancer Manag Res 2010; 2:157-64. [PMID: 21188106 PMCID: PMC3004575 DOI: 10.2147/cmar.s7461] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2010] [Indexed: 11/23/2022] Open
Abstract
According to recent published reports, over 12 million new cases of cancer were estimated worldwide for 2007. Estimates from 2008 predict that cancer will account for 22.8% of all deaths in the US. Another report stated 50% to 75% of cancer deaths in the US are related to smoking, poor dietary choices, and physical inactivity. A 2004 report indicated obesity and/or a sedentary lifestyle increases the risk of developing several types of cancer. Conversely, several large-scale cohort studies point to the positive relationship between physical activity and a reduction in cancer risk. In addition, research over the last few years has clearly shown cardiorespiratory benefits, increases in quality of life (QOL), and increases in physical functioning for cancer survivors who engage in exercise programs. Thus, the purpose of this review is to highlight three areas related to cancer and physical activity. First, information concerning the prevention of cancer through physical activity is addressed. Second, recent studies identifying changes in volume of oxygen uptake (VO(2)) and/or cardiorespiratory functioning involving exercise with cancer survivors is presented. Third, studies identifying changes in cancer survivors' physical functional capacity and QOL are presented. Finally, a summary of the review is offered.
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Affiliation(s)
- Matthew S Wiggins
- Department of Kinesiology, University of Wisconsin-Eau Claire, Eau Claire, WI, USA
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16
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Motivational readiness for physical activity and quality of life in long-term lung cancer survivors. Lung Cancer 2008; 61:117-22. [PMID: 18243406 DOI: 10.1016/j.lungcan.2007.12.012] [Citation(s) in RCA: 58] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2007] [Revised: 11/16/2007] [Accepted: 12/11/2007] [Indexed: 01/19/2023]
Abstract
Little is known about the relationship between motivational readiness for physical activity and quality of life (QOL) in long-term lung cancer survivors. Long-term survivors are considered those who are living 5 years or more following a cancer diagnosis. This project examined the relationship between a self-report measure of motivational readiness for physical activity and QOL in a sample of 272 long-term lung cancer survivors. Participants (54% male, average age 70 years old) completed the mailed survey an average of 6 years after being diagnosed with lung cancer. Survey measures included the stage of change for physical activity and a set of single item QOL and symptom scales. Thirty-seven percent of respondents reported they currently engaged in regular physical activity (a total of 30 min or more per day, at least 5 days per week). Kruskal-Wallis tests revealed that those who reported engaging in regular physical activity reported a better overall QOL, better QOL on all five domains of QOL functioning (mental, physical, social, emotional, and spiritual), and fewer symptoms compared to those with a sedentary lifestyle. Physical activity level may have important QOL and symptom management benefits for long-term lung cancer survivors.
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17
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Andersen BL, Shelby RA, Golden-Kreutz DM. RCT of a psychological intervention for patients with cancer: I. mechanisms of change. J Consult Clin Psychol 2007; 75:927-38. [PMID: 18085909 PMCID: PMC2441974 DOI: 10.1037/0022-006x.75.6.927] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Little is known about the therapeutic processes contributing to efficacy of psychological interventions for patients with cancer. Data from a randomized clinical trial yielding robust biobehavioral and health effects (B. L. Andersen et al., 2004, 2007) were used to examine associations between process variables, treatment utilization, and outcomes. Novel findings emerged. Patients were highly satisfied with the treatment, but their higher levels of felt support (group cohesion) covaried with lower distress and fewer symptoms. Also, specific treatment strategies were associated with specific outcomes, including lower distress, improved dietary habits, reduced symptomatology, and higher chemotherapy dose intensity. These data provide a comprehensive test of multiple therapeutic processes and mechanisms for biobehavioral change with an intervention including both intensive and maintenance phases.
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