(Title image: Photo by Luis Reyes on Unsplash)
It used to be that people undergoing chemotherapy for cancer were told to be careful with physical activity and restrict themselves to low- and moderate-intensity exercise. Even when I was going through cancer treatment eight years ago, there was concern about how much weight I was lifting for fear of eliciting lymphedema, although by that time, exercise was more encouraged.
I am so glad that our understanding of exercise and cancer has changed! This evolution in thinking is exemplified by a case study that was recently published in the journal Lifestyle Medicine (Rolle & Crane, 2025). The lead author and PhD student in Public Health at U of Miami, LaShae Rolle (age 27), was also a competitive powerlifter who was diagnosed with stage 2B estrogen receptor-positive breast cancer in 2024.
For LaShae, exercise was an integral part of her life, something to which I can relate. She worked with her team to create training sessions that aligned appropriately with her cancer treatments which consisted of four cycles of chemo following a mastectomy.
Remarkably, by modifying her workouts as needed, LaShae was able to maintain 93% of her squat strength (408 lbs of her 441-lb one-repetition maximum (1RM)) and 87% of both her bench press (254 lbs of her 292-lb 1RM) and deadlift (430 lbs of her 497-lb 1RM). This is so impressive considering that throughout her chemo treatment she was still able to squat and deadlift over 400 lbs!
Not surprisingly, attempting to train at high-intensity on the day following her first infusion (!) resulted in severe dizziness and fatigue. By the 3rd and 4th cycles of her chemo, Rolle found that delaying intense exercises for about a week following her infusions allowed her to train more effectively. Note that her chemo cycles were three weeks apart, allowing sufficient time to recover.
Why keep training during chemotherapy? There is a rapidly increasing body of research that demonstrates the critical role that physical activity plays in recovery from cancer treatment and avoiding recurrence. Unfortunately, for people who view exercise as a chore or burden, being urged to maintain an exercise program while they’re undergoing something as punishing as chemotherapy may feel like an additional punishment.
But the benefits of exercising throughout treatment, as appropriate, are irrefutable. For those who haven’t previously exercised, it’s important to begin slowly, finding physical activities that are enjoyable and rewarding, eventually ramping up the challenge to include cardiovascular exercise, strength training, balance work and flexibility training.
For those for whom workouts are an integral part of their lives, being encouraged to continue exercising as we have prior to cancer is psychologically uplifting. I’ve written in earlier posts that working out was one of the few things that I could do that gave me a sense of control in the out-of-control landscape of a cancer diagnosis. It helped me feel “normal” when I felt anything but, and that was such an important part of mentally getting through treatment.
Bottom line: Participating in your regular exercise routine during chemotherapy is doable, with modifications, and the physical activity can help you get through the treatment process. While LaShae Rolle did experience treatment side effects, she was able to work around those to limit the amount of strength she lost during chemo to an impressive degree.
REFERENCES
Research Article:
Rolle LD & Crane TE (2025) Exercising Through Breast Cancer: A Case Study on Strength Training During Active Treatment. Lifestyle Medicine, 6, e70034. https://doi.org/10.1002/lim2.70034
Reader-friendly versions:
EurekaAlert!
https://www.eurekalert.org/news-releases/1092107
University of Miami News Article
https://news.med.miami.edu/exercising-through-breast-cancer-how-one-powerlifter-defied-chemotherapy-with-strength-training/
Frantic Shanti 