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Exercise and Cardiovascular Response01:20

Exercise and Cardiovascular Response

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Exercise significantly impacts cardiovascular response, which is crucial for understanding patient health and designing effective treatment plans.
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Regular physical activity is essential for maintaining cardiovascular health, with aerobic exercises being particularly effective. According to the American Heart Association, 150 minutes of moderate to intense aerobic exercise per week is recommended for a healthy heart. Aerobic activities may include brisk walking, running, bicycling, cross-country skiing, and swimming, ideally performed three to five times per week.
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Cancer Therapies02:49

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Cancer therapies are various modes of treatment, such as surgery, radiation therapy, and chemotherapy that are administered to cancer patients.
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Chemotherapy-induced Vascular Toxicity - Real-time In vivo Imaging of Vessel Impairment
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Exercise training affects hemodynamics not cardiac function during anthracycline-based chemotherapy.

Amy A Kirkham1, Sean A Virani2, Kelcey A Bland3

  • 1University of Alberta, 1098 Research Transition Facility, 8308 114 Street NW, Edmonton, AB, T6G 2V2, Canada.

Breast Cancer Research and Treatment
|August 21, 2020
PubMed
Summary

Exercise training during anthracycline chemotherapy did not alter cardiac function but did modify hemodynamic responses. It attenuated the drop in systemic vascular resistance (SVR) potentially by increasing vessel lumen radius.

Keywords:
AnthracyclinesCardiotoxicityExerciseHeart function testsHemodynamics

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Area of Science:

  • Cardiology
  • Oncology
  • Exercise Physiology

Background:

  • Preclinical studies suggest exercise training may protect against anthracycline-induced cardiotoxicity.
  • Evidence in human patients undergoing chemotherapy is limited.

Purpose of the Study:

  • To evaluate the impact of exercise training during anthracycline-based chemotherapy on cardiac function and hemodynamics in breast cancer patients.
  • To determine if exercise modifies chemotherapy-related cardiovascular side effects.

Main Methods:

  • Prospective, non-randomized controlled study comparing 26 women in an exercise group (3x/week aerobic and resistance training) with 11 women in a usual care group.
  • Two-dimensional echocardiography assessed cardiac function and hemodynamics before and after chemotherapy.
  • Statistical analysis included paired t-tests and ANCOVA to compare changes between groups.

Main Results:

  • No significant changes in left ventricular function (strain, volumes, ejection fraction, E/A ratio, mass) were observed in either group.
  • Hemoglobin, hematocrit, and mean arterial pressure decreased similarly in both groups.
  • Cardiac output increased only in the usual care group, while the reduction in systemic vascular resistance (SVR) was significantly attenuated in the exercise group.

Conclusions:

  • Exercise training during anthracycline chemotherapy does not negatively impact resting cardiac function.
  • Exercise training appears to modify hemodynamic responses, notably attenuating the decrease in SVR.
  • This attenuation may be linked to increased vessel lumen radius, potentially mitigating chemotherapy-induced vascular changes.