Hispanic ethnicity as a moderator of the effects of aerobic and resistance exercise on physical fitness and quality-of-life in breast cancer survivors

Effectiveness of aerobic exercise intervention on cardiovascular disease risk in female breast cancer: a systematic review with meta-analyses

BACKGROUND

Cardiovascular disease (CVD) has become the leading cause of competitive mortality in female breast cancer (BC). Regular aerobic exercise (AE) has been widely accepted as an effective intervention to reduce cardiovascular risk in a variety of different clinical conditions. This study is aimed at evaluating the efficacy and safety of AE on cardiovascular risk factors in female BC and assessing the quality of the synthesized evidence.

METHODS

We searched five English databases (Cochrane Library, PubMed, Embase, Scopus, and Web of Science) from inception to January 2023. Randomized controlled trials (RCTs) and cohort trials studying the effects of AE intervention on cardiovascular disease risk in female breast cancer were included. We used Stata 16 for data synthesis, Risk of Bias 2, and the Newcastle-Ottawa Scale for methodological quality evaluation and assessed the certainty of the synthesized evidence in the Grading of Recommendations, Assessment, Development and Evaluations (GRADE) approach.

RESULTS

Forty RCTs and 6 cohort trials involving 44,877 BC patients showed AE reduced the incidence of CVD events by 29.4% [risk ratio (RR) = 0.706, 95% confidence interval (CI) (0.659, 0.757), low certainty] and coronary artery disease events by 36% [RR = 0.640, 95% CI (0.561, 0.729), low certainty]. AE improved LVEF, and reduced weight and hip circumference. The subgroup analysis results showed that nonlinear AE increased VO2max by 5.354 ml·kg·min-1 [mean difference (MD) = 5.354, 95% CI (2.645, 8.062), very low certainty] and reduced fat mass by 4.256 kg [MD = 4.256, 95% CI (-3.839, -0.094), very low certainty]. While linear AE reduced low-density lipoprotein cholesterol (LDL-C) by 8.534 mg/dL [MD = -8.534, 95% CI (-15.511, -1.557), low certainty]. The sensitivity analysis results showed that each trial did not affect the impact index of the highly heterogeneous outcomes.

CONCLUSIONS

Our study indicates that AE has a positive effect in reducing cardiovascular risk factors. The individualization principle of AE deserves more attention in the future. This will provide new ideas to reduce CVD events and improve the quality of life in female BC patients. However, further research on AE in female BC should take into account long-term and well-designed administration to draw definitive conclusions.

Alternative Mental Health Interventions for Hispanic Women With Breast Cancer: A State of the Science Review

Introduction: Current disadvantages in accessing healthcare services, particularly mental health resources, result in increased psychological dysfunction among Hispanic women with advanced breast cancer. Little is known about using alternative nonpharmacological therapies for Hispanic women experiencing psychological distress secondary to a breast cancer diagnosis. This state-of-the-science paper synthesizes current culturally appropriate alternative therapies that effectively address depressive symptoms, anxiety, and psychological distress among Hispanic women with breast cancer (HWBC). Methods: The search criteria included published articles that used alternative interventions to address psychological needs among HWBC. Ten studies met the inclusion criteria. Results: Four alternative interventions were identified in the literature that significantly met the cultural mental health needs of HWBC. Mindfulness and technology use were the two interventions most studied in this review. Conclusion: Evidence indicates that alternative therapies for mental health improve overall quality of life. Further research to attenuate psychological distress is needed to meet mental health needs among HWBC. Innovative methods such as the use of technology and mindfulness as well as integrating personalized care are crucial to address the cultural needs of HWBC.

Effect of therapeutic exercise on peak oxygen consumption in oncological population: a systematic review with meta-analysis

INTRODUCTION

Cancer is amongst the leading causes of death worldwide. A total of 19.3 million new cases were diagnosed in 2020. Cardiovascular impairment is the second leading cause of death in patients undergoing cancer treatment. By measuring the maximum rate of oxygen consumption (VO2max) in cancer patients, it is possible to estimate their cardiorespiratory health. This study aims to show how participants' VO2max increases with a therapeutic physical exercise programme.

METHODS

Four databases were used for the literature search. Twenty-eight studies were analysed using the inclusion and exclusion criteria. The quality of these studies was analysed with the PEDRO scale. The structural characteristics of the articles and the study variable (VO2max) were studied.

RESULTS

The VO2max of the 2558 patients studied presents some variations by gender, intervention and moment of measurement. For male-associated cancer, the increased VO2max ranged between 1.5 and 4.2% after the intervention. The increase in the maximum VO2max in female-associated cancer was between 0.3 and 53%. Different types of cancer for both genders presented an oscillation between 0.5 and 3.47%.

CONCLUSIONS

Therapeutic physical exercise is an efficient intervention to improve the VO2max in oncology patients. The results show that a therapeutic physical exercise intervention lasting 12 weeks, 3 days per week with a moderate-vigorous intensity, increases the VO2max in oncology patients.

Effect of resistance exercise on physical fitness, quality of life, and fatigue in patients with cancer: a systematic review

OBJECTIVE

The purpose of this study is to conduct a systematic review to assess the effects of different forms of resistance exercises (resistance exercise, resistance exercise combined with aerobic exercise, and resistance exercise combined with other exercises) on physical fitness, quality of life (QOL), and fatigue of patients with cancer.

METHODS

We conducted a systematic review using the Cochrane Handbook for Systematic Reviews of Interventions guidelines. We searched PubMed, Web of Science, and Scopus databases for the studies from the establishment of the database to September 2023, including randomized controlled trials and clinical trials that evaluated the effects of different resistance exercise on physical fitness, QOL, and fatigue in all patients with cancer. Two reviewers independently assessed the quality of all the included studies using the Cochrane Handbook for Systematic Reviews of Interventions and MINORS scale. We divided the intervention into three types: resistance exercise, resistance exercise combined with aerobic exercise, and resistance exercise combined with other exercises.

RESULTS

In total, 48 studies (3,843 participants) met the inclusion criteria. The three exercise intervention forms have significant effects on physical fitness and QOL, but the improvement effect on fatigue is not clear. A total of 34 studies reported significant and beneficial effects of resistance exercise on physical fitness across all types of cancer. There were 28 studies that reported significant or borderline improvement effects of resistance on QOL, and only 10 studies reported significant effects of resistance exercise interventions on fatigue improvement in patients with cancer.

CONCLUSIONS

Resistance exercise, resistance exercise combined with aerobic exercise, and resistance exercise combined with other exercises all have a positive effect on improving fitness and QOL in patients with cancer. Resistance exercise has an advantage in improving muscle strength, while combined resistance exercise has an advantage in improving QOL; however, there are no consistent findings in improving fatigue, although low-intensity resistance exercise is effective.

SYSTEMATIC REVIEW REGISTRATION

www.inplasy.com, identifier INPLASY2023110034.

Promotion of Muscle-Strengthening Activity Among Latina and Black/African American Women: A Review of Literature

Latina and Black/African American (AA) women report disproportionately low levels of muscle-strengthening activities (MSA) and high rates of related chronic health conditions. Despite the health benefits of MSA, physical activity intervention research in these populations has focused mostly on increasing aerobic physical activity. The purpose of this review was to describe the current state of scientific literature on MSA interventions among Latina and Black/AA women. Two electronic databases, CINAHL and PubMed, were searched for studies published during the past 10 years. Studies were included in this review if they reported promotion of MSA, included at least 50% Latina and/or Black/AA women in their samples, and used an interventional design. Search procedures identified 8 unique interventions targeting MSA in Latina (n = 3) and Black/AA women (n = 5). Results revealed there is limited published research on MSA promotion among Latina and Black/AA women, especially on theory-based interventions that address psychosocial and behavioral influences of MSA, as well as assessment of MSA outcomes in these populations. This review highlights a critical need for research on culturally tailored behavioral interventions to reduce the low MSA in Latina and Black/AA women and provides future research directions on this topic.

Examining sociodemographic and health-related characteristics as moderators of an mHealth intervention on physical activity outcomes in young adult cancer survivors

PURPOSE

This study explored whether sociodemographic and health-related characteristics moderated mHealth PA intervention effects on total and moderate-to-vigorous physical activity (MVPA) at 6 months, relative to a self-help condition among young adult cancer survivors (YACS).

METHODS

We conducted exploratory secondary analyses of data from a randomized controlled trial among 280 YACS. All participants received digital tools; intervention participants also received lessons, adaptive goals, tailored feedback, text messages, and Facebook prompts. Potential moderators were assessed in baseline questionnaires. PA was measured at baseline and 6 months with accelerometers. Linear model repeated measures analyses examined within- and between-group PA changes stratified by levels of potential moderator variables.

RESULTS

Over 6 months, the intervention produced MVPA increases that were ≥ 30 min/week compared with the self-help among participants who were males (28.1 vs. -7.7, p = .0243), identified with racial/ethnic minority groups (35.2 vs. -8.0, p = .0006), had baseline BMI of 25-30 (25.4 vs. -7.2, p = .0034), or stage III/IV cancer diagnosis (26.0 vs. -6.8, p = .0041). Intervention participants who were ages 26-35, college graduates, married/living with a partner, had a solid tumor, or no baseline comorbidities had modest MVPA increases over 6 months compared to the self-help (ps = .0163-.0492). Baseline characteristics did not moderate intervention effects on total PA.

CONCLUSIONS

The mHealth intervention was more effective than a self-help group at improving MVPA among subgroups of YACS defined by characteristics (sex, race, BMI, cancer stage) that may be useful for tailoring PA interventions.

IMPLICATIONS FOR CANCER SURVIVORS

These potential moderators can guide future optimization of PA interventions for YACS.

CLINICALTRIALS

GOV IDENTIFIER

NCT03569605.

Effects of aerobic combined with resistance exercise on cardiorespiratory fitness and cardiometabolic health in breast cancer survivors: A Systematic Review, meta-analysis and meta-regression

Background

Cardiotoxicity from chemotherapy is a serious risk to the quality of survival of breast cancer survivors (BCS), and aerobic combined with resistance exercise (CE) has the potential to combat this cardiac damage. However, there is a lack of high-quality studies to assess the specific effects of CE. This study aimed to investigate the effects of CE on cardiopulmonary function (CRF) and cardiometabolic health in BCS.

Methods

A comprehensively searched of the 4 databases (PubMed, Embase, Web of Science, Cochrane Library) from the database construction until March 1, 2023. The included studies were randomized controlled trials (RCTs) reporting the effects of CE on CRF and cardiometabolic health in BCS. The quality of the literature was assessed by two independent reviewers using the Cochrane Collaboration Risk of Bias Tool. Weight means difference (WMD), or standardized mean difference (SMD), were combined using random or fixed effects models. Subgroup and meta-regression explored heterogeneity as well as covariate effects.

Results

40 studies were included in the meta-analysis, with 2849 participants. Results showed that CE significantly increased maximal oxygen uptake (VO2max) (WMD:4.55; 95% CI:2.84, 6.26; I2 = 91.90%, P < 0.001) and reduced body weight (BW) (WMD: 1.61; 95% CI: 2.44, -0.78; I2 = 38.60%, P = 0.032) and body mass index (BMI) (WMD: 0.86; 95% CI: 1.43, -0.29; I2 = 70.50%, P < 0.001) in BCS. Subgroup analysis showed that BMI (WMD: 1.15; 95% CI: 1.89, -0.41; I2 = 76.90%, P < 0.001) and VO2max (WMD:4.21; 95% CI:2.40, 6.02; I2 = 96.4%, P < 0.001) were more effective with supervision. Meta-regression analysis showed that sample size had a significant moderating effect on BW (Coeff: 0.03, 95% CI: 0.00, 0.06).

Conclusions

CE significantly increases CRF in BCS and improves most cardiometabolic health-related outcomes. In addition, there will be a need for many larger RCTs to explore the effects of CE on inflammatory biomarkers in BCS.

Characterization of Physical Function and Cancer-Related Physical Impairments in Hispanic Women With Breast Cancer: A Descriptive Study

Introduction: This study reports characteristics of Hispanic women with breast cancer with respect to physical function, body mass index (BMI), and depression. Methods: This retrospective study included 322 Hispanic women with breast cancer. Physical function and fatigue were assessed using the Patient Reported Outcomes Measurement System-Physical Function (PROMIS-PF) short form and PROMIS-Fatigue (PROMISE-F) short form. In addition, Timed Up and Go (TUG) test, sit to stand in 30 s (STS30) test, four-stage balance test (4SB), and grip strength (GS) were measured. Depression was identified using Patient Health Questionnaire (PHQ)-2 and extracted from medical chart. Results: Nearly 40.8% were obese, and 20.8% had depression. Compared to normal BMI patients, mean PROMIS-F score was significantly higher among overweight and obese patients. The mean STS30 score was significantly lower in obese patients, compared to normal BMI patients. Regression analysis showed that the odds of depression were higher with increasing TUG and lower PROMIS-F, STS30, and GS. Conclusion: Hispanic women with breast cancer have substantial loss of physical function, and this is exaggerated if they are obese, overweight, or depressed. Clinicians caring for this population should screen them for the presence of loss of physical function, BMI, and depression.

A Study of Immigrant Latinas Perspectives of Caring for their Diabetes

Hispanic-Americans are disproportionately affected by type 2 diabetes compared to non-Hispanic Whites. Five million adult Hispanic Americans are estimated to have been diagnosed with T2D. Among US Hispanics, Mexicans have the highest rate (14.4%) of diabetes. Further, Hispanics are also twice as likely as non-Hispanics Whites to die from diabetes, making it the fifth leading cause of their death and a serious health problem in Hispanic communities. Yet, little is understood of what rural immigrant Latinas do to care for their diabetes health. In-depth interviews (3 focus groups) and thematic analysis found 16 Latinas had T2D on average for 9 years; all emigrated to the USA from Mexico, lived in the USA for an average of 27 years, and worked (60%). Within the domain of "What do you do to take care of your health?" Latinas desired to adhere to exercise, controlled diet, and medications, but perceived a powerful barrier to a healthy life was the American lifestyle that included long work days, more money to purchase unhealthy foods and a desire for them, and a lack of time for other forms of exercise. Despite the Latina participants' years of experience about living with T2D in the US, they still struggled to adhere to healthy behaviors. Future research should address the longer time Hispanic immigrants live in the US with the more at-risk they become for diminished health.

A remotely delivered, peer-led intervention to improve physical activity and quality of life in younger breast cancer survivors

Younger breast cancer survivors (YBCS) consistently report poorer quality of life (QOL) than older survivors. Increasing physical activity (PA) may improve QOL, but this has been understudied in YBCS. This single arm pilot study evaluated the feasibility and acceptability of a 3-month, peer-delivered, remote intervention to increase PA and improve QOL in YBCS. Data were collected from October 2019 - July 2020. Participants (n = 34, 43.1 ± 5.5 years old, 46 ± 34.4 months post-diagnosis, BMI = 30.2 ± 7.4 kg/m2) completed six video sessions with a trained peer mentor; self-monitored PA with a Fitbit activity tracker; and interacted with a private Fitbit Community for social support. At baseline, 3-and 6-months, participants completed QOL questionnaires and PA was measured through accelerometer (moderate-to-vigorous PA [MVPA]) and self-report (strength and flexibility). A parallel mixed-methods approach (qualitative interviews and quantitative satisfaction survey at 3-months) explored intervention feasibility and acceptability. One-way repeated-measures ANOVAs examined impacts on PA and QOL at 3-and 6-months. The intervention was feasible as evidenced by efficient recruitment, high retention, and adherence to intervention components. Remote delivery, working with a peer mentor, and using Fitbit tools were highly acceptable. From baseline to 3-months, participants increased time spent in objectively measured MVPA, strength, and flexibility exercises, and reported meaningful improvements to body image, fatigue, anxiety, and emotional support. A fully remote, peer-to-peer intervention is an acceptable and promising strategy to increase PA and improve QOL in YBCS. Refinements to the intervention and its delivery should be further assessed in future studies, toward the goal of disseminating an evidence-based, scalable intervention to the growing number of YBCS.Trial registration Prospectively registered as NCT04064892.

Treatment-related side effects among Hispanic and non-Hispanic white long-term breast cancer survivors by tamoxifen use and duration

PURPOSE

To determine the associations between ethnicity, age at diagnosis, obesity, multimorbidity, and odds of experiencing breast cancer (BC) treatment-related side effects among long-term Hispanic and non-Hispanic white (NHW) survivors from New Mexico and explore differences by tamoxifen use.

METHODS

Lifestyle and clinical information including self-reported tamoxifen use and presence of treatment- related side effects were collected at follow-up interviews (12-15 years) for 194 BC survivors. Multivariable logistic regression models were used to examine associations between predictors and odds of experiencing side effects overall and by tamoxifen use.

RESULTS

Women ranged in age at diagnosis (30-74, M = 49.3, SD = 9.37), most were NHW (65.4%) and had in-situ or localized BC (63.4%). Less than half reportedly used tamoxifen (44.3%), of which 59.3% reported using > 5 years. Overall, survivors who were overweight/obese at follow-up were 5.42 times more likely to experience treatment-related pain (95% CI 1.40-21.0) compared to normal weight survivors. Survivors with multimorbidity, compared to survivors without, were more likely to report treatment-related sexual health issues (aOR 6.90, 95% CI 1.43-33.2) and poorer mental health (aOR 4.51, 95% CI 1.06-19.1). The statistical interactions between ethnicity and overweight/obese with tamoxifen use were significant (p-interaction < 0.05) for treatment-related sexual health issues.

CONCLUSION

Our results demonstrate that survivors with overweightness/obesity or multimorbidity may be more likely to experience BC treatment-related side effects. Tamoxifen use modifies associations between ethnicity, being overweight/obese, and sexual health issues following treatment. The likelihood of experiencing treatment-related side effects were more favorable for those on tamoxifen or those who had used tamoxifen for longer durations. These findings highlight the importance of fostering side effect awareness and applying appropriate interventions to assist with disease management throughout BC survivorship care.

Aerobic exercise combined with resistance exercise training improves cardiopulmonary function and blood lipid of patients with breast cancer: A systematic review and meta-analysis

BACKGROUND

To compare the therapy effects following the aerobic exercise combined with resistance exercise training (AET + RET) and common care treatment for patients with breast cancer.

METHODS

Articles about the effects of AET + RET on the breast cancer patients in 4 online databases were searched. The differences of cardiopulmonary function, blood pressure, blood lipid, and body mass index between the AET + RET treatment and the usual care treatment were compared.

RESULTS

Totally, 8 articles were involved into the meta-analysis. The qualities of the 8 articles were medium. The combination results showed that AET + RET increased the VO2peak (weighted mean difference (WMD) = 2.93 mL/kg/min; 95% CI: 0.38, 5.49; P = .02) and VO2max (WMD = 6.98 mL/kg/min; 95% CI: 2.04, 15.92; P = .01), demonstrating its improving effects in cardiopulmonary function. Moreover, the AET + RET decreased the TG (WMD = -57.95 mg/dL; 95% CI: -112.25, -3.64; P = .04), demonstrating its improving effects in blood lipid. While or the HRpeak, RERpeak, systolic blood pressure, diastolic blood pressure, high-density lipoprotein cholesterol, and body mass index, there are no significant differences between the AET + RET and usual care treatment (P < .05).

CONCLUSION

Our results demonstrated that AET + RET can significantly improve the cardiopulmonary function and blood lipid for breast cancer patients.

Reducing Metabolic Dysregulation in Obese Latina and/or Hispanic Breast Cancer Survivors Using Physical Activity (ROSA) Trial: A Study Protocol

Background

Latina and Hispanic breast cancer survivors (LHBCS) are at increased risk for long-term complications and poorer metabolic health, including metabolic dysregulation (MetD) before and following breast cancer diagnosis. MetD can increase risk of cancer recurrence, death, and comorbid conditions by increasing inflammation and cancer cell proliferation. While exercise improves physical fitness and metabolic outcomes in breast cancer survivors, there is a lack of studies including underrepresented and disadvantaged minority groups such as LHBCS.

Methods

Our 12-month randomized (exercise or attention control) controlled trial (the ROSA trial) aims to utilize a progressive combined aerobic and resistance exercise program to improve MetD, insulin resistance, and visceral adiposity among obese LHBCS. We aim to recruit 160 women with Stage I-III breast cancer who are sedentary, centrally obese, and have completed treatment (e.g., surgery, radiation, chemotherapy) prior to enrollment. Participants randomized to the exercise group receive 16-weeks of virtually supervised aerobic and resistance training, followed by 16-weeks of unsupervised home-based aerobic and resistance exercise, and 16-weeks of follow-up. The attention control group receive a 12-month home-based stretching program. Primary and secondary outcomes are measured every 4-weeks during study visits.

Discussion

The ROSA trial is the first exercise oncology trial targeting high-risk sedentary, obese LHBCS to improve MetD-related outcomes. Results of this trial will help illuminate how exercise impacts health-related outcomes, survivorship, and recurrence, and inform future exercise oncology guidelines to reduce health disparities among minority cancer survivors.

The lasting effects of resistance and endurance exercise interventions on breast cancer patient mental wellbeing and physical fitness

Breast cancer is a persisting global burden for health services with cases and deaths projected to rise in future years. Surgery complemented by adjuvant therapy is commonly used to treat breast cancer, however comes with detrimental side effects to physical fitness and mental wellbeing. The aim of this systematic review and meta-analysis is to determine whether resistance and endurance interventions performed during adjuvant treatment can lastingly ameliorate these side effects. A systematic literature search was performed in various electronic databases. Papers were assessed for bias and grouped based on intervention design. RStudio was used to perform the meta-analyses for each group using the ‘meta’ package. Publication bias and power analyses were also conducted. These methods conform to PRISMA guidelines. Combined resistance and endurance interventions elicited significant long-lasting improvements in global fatigue and were beneficial to the remaining side effects. Individually, resistance and endurance interventions non-significantly improved these side effects. Resistance interventions elicited higher benefits overall. Exercise interventions have lasting clinical benefits in ameliorating adjuvant therapy side effects, which negatively impact physical fitness and mental wellbeing. These interventions are of clinical value to enhance adherence rates and avoid comorbidities such as sarcopenia, thus improving disease prognosis.

Lifestyle and quality of life in patients with early-stage breast cancer receiving adjuvant endocrine therapy

PURPOSE OF REVIEW

A comprehensive approach to survivorship care for women with early-stage, hormone-receptor positive breast cancer should systematically include the proactive assessment and adequate management of endocrine therapy-associated symptoms, in order to assure optimal balance between preserving quality of life (QOL) and maximizing treatment adherence. We reviewed the recent literature focused on lifestyle factors, including physical activity, diet and nutrition, weight management, smoke, and alcohol behavior, and their link with symptomatology and QOL among women receiving adjuvant endocrine therapy.

RECENT FINDINGS

Recent studies confirm the safety, feasibility, and effectiveness of lifestyle interventions in mitigating several common endocrine therapy-related effects, including musculoskeletal pain, fatigue, and insomnia, and in improving physical and emotional wellbeing as well as overall health-related QOL among women with early-stage breast cancer.

SUMMARY

Healthy lifestyle behaviors have the potential to modulate the downstream impact of endocrine therapy and improve QOL among women with early-stage breast cancer. Considerations for real-world clinical care implementation emerged, including a need to evaluate the long-term uptake of healthy behaviors and facilitate the postintervention maintenance of an improved lifestyle. Some facilitators to health promotion in breast cancer survivors were also suggested, such as individualized and one-to-one supervised programs, and digital solutions providing real-time feedback, building on personalized, direct patient engagement.

Effectiveness of physical exercise on the cardiovascular system in breast cancer patients: a systematic review and meta-analysis of randomized controlled trials

OBJECTIVE

The primary purpose of this study is to structure the available evidence relating to physical exercise programs and their impact on patients' cardiovascular system during the convalescence for breast cancer.

METHODS

We searched six English databases and four Chinese databases from inception to May 19, 2021. Two reviewers independently screened literature, extracted data. They assessed the risk of bias according to the eligibility criteria, and the Cochrane Collaboration RevMan 5.3.0 version software and STATA 15.0 software were used for this meta-analysis. This study has been registered in the International Prospective Register of Systematic Reviews (CRD42021226319).

RESULTS

In total, 3483 articles were screened and data from 11 randomized controlled trials (RCTs) involving 666 breast cancer patients were used in this meta-analysis. The results showed that exercise could decrease systolic blood pressure (SBP) (P = 0.006), diastolic blood pressure (DBP) (P = 0.0003), triglycerides (TG) levels (P < 0.00001), body mass index (BMI) (P = 0.009). Results also showed that exercise could significantly increase peak oxygen uptake (VO2peak) (P = 0.009), maximal oxygen consumption (VO2max) (P = 0.01), and High-density leptin cholesterol (HDL-C) levels (P < 0.0001). However, compared with the control group, there was no significant changes of mean arterial pressure (MAP), peak heart rate (HRpeak), and peak respiratory exchange ratio (PERpeak) (P > 0.05).

CONCLUSIONS

Physical exercise could improve the cardiovascular system function associated with decreased the levels of SBP, DBP, TG, and increased the levels of VO2peak, VO2max, and HDL-C in breast cancer patients. These findings reveal that exercise may be a promising means for cardiovascular nursing.

Physical activity, ethnicity, and quality of life among breast cancer survivors and population-based controls: the long-term quality of life follow-up study

PURPOSE

To explore the relationship between physical activity (PA) and quality of life (QOL) among Hispanic and non-Hispanic white breast cancer (BC) cases and population-based controls from the New Mexico 'Long-Term Quality of Life Study'.

METHODS

Self-reported PA (low, moderate, vigorous MET hours/week) at baseline and follow-up interviews (12-15 years) were available for 391 cases and controls and modeled using multiple linear regressions with SF-36 mean composite scores for physical and mental health. The change in PA from baseline to follow-up and interactions with ethnicity were also examined. Models were adjusted for age at diagnosis/baseline interview, education, comorbidities, body mass index, and change in PA.

RESULTS

PA intensities at each timepoint did not differ by case/control status; however, the change in vigorous PA was lower among cases (p = 0.03). At follow-up, low intensity PA increased mental health QOL scores among cases; however, the interaction between low intensity PA and ethnicity was statistically significant among controls indicating decreased mental health among Hispanics (p = 0.02). Change in moderate PA was associated with increased physical and mental health among cases (physical: β = 0.186, p = 0.008; mental: β = 0.225, p = 0.001) and controls (physical: β = 0.220, p < 0.0001; mental: β = 0.193, p = 0.002), when controlling for confounders.

CONCLUSION

Our results demonstrate that all levels of PA are important for mental health among BC cases, while activities of higher intensity are important for physical health among women overall. The statistical interaction observed between ethnicity and low intensity PA among controls for mental health warrants further research to provide a meaningful interpretation.