So if you needed yet another reason to exercise before, during and after your breast cancer treatments, I’ve got one for you.
A recent study in the Journal of Clinical Oncology (Salerno et al., 2021) found that early stage (I-III) breast cancer patients who were meeting the US minimum physical activity guidelines both before and during their chemotherapy displayed better cognitive function then did those patients who did not, and the effects were apparent both at the time of chemo and also six months after its completion.
This follows along the lines of other things we already know about exercise and cancer, such as increased survival rates and reduced rates of recurrence. It’s not a big stretch to say that exercise (and for the purposes of this post, I’m referring to the US national guidelines) is possibly one of the best things you can do for yourself, whether you are already a cancer patient or don’t want to become one (again).
What are these guidelines?
It’s suggested that adults do (1) at least 150-300 minutes per week of moderate-intensity or 75-150 minutes per week of vigorous-intensity aerobic physical activity, or some combination of the two intensities, the more the better; and (2) strength training activity involving all the major muscle groups at least two days a week at moderate or greater intensity (see specifics at Physical Activity Guidelines for Americans, 2nd edition).
Notably, similar guidelines hold across age groups and health conditions, with some modifications, although what exactly constitutes moderate to high intensity for different people will vary according to their conditioning and abilities. Take home message: If you can’t meet the guidelines, do what you can. It will still benefit you. The worst thing you can do is nothing.
While there’s been a considerable amount of research done on the benefits of exercise as a whole, we’re only now beginning to focus on cancer patients and survivors as the test subjects. And new research is being conducted on different aspects of exercise to learn what effects they might have on cognition.
I’m going to be watching for the results of two clinical studies regarding exercise and cognition of cancer survivors. Both are currently recruiting participants.
The first, being conducted by the University of California, San Diego, is entitled “I Can! Improving Cognition After Cancer” and will be a randomized trial that examines whether physical activity improves cognitive function. You can read about it here: A randomized trial of physical activity for cognitive functioning in breast cancer survivors: Rationale and study design of I Can! Improving Cognition After Cancer, funded by the National Cancer Institute. Want to learn more? Go to https://clinicaltrials.gov/ct2/show/NCT04049695.
The second, conducted by the University of Pittsburgh and entitled, “Aerobic Exercise in Improving Cognitive Function in Patients with Stage 0-IIIA Breast Cancer”, will explore the effects of aerobic exercise specifically and will involve neuroimaging and the examination of pro-inflammatory biomarkers. You can read about it here: https://www.cancer.gov/about-cancer/treatment/clinical-trials/search/v?id=NCT02793921&r=1. Again this is funded by the National Cancer Institute. Interested in learning more? Go to https://clinicaltrials.gov/ct2/show/NCT02793921.
If you have any interest in participating in either of these studies, contact info for the research project is available above in the posted clinical trial links.
So you might be thinking, “I can barely deal with the diagnosis…and you want me to EXERCISE???” I promise you, physical movement will only make you feel better. However, if you don’t have an established exercise routine and don’t particularly enjoy the experience, consider what you can manage.
We’re not talking about training for a marathon or a powerlifting competition. But if you can do something, ANYTHING, you will still see greater improvements in your cognition–and quite frankly, many other aspects of your physical and mental state–than if you hadn’t done any activity at all.
It is worth it and you are worth it. So lace up your shoes and give it a go.