Nutrition and resistance training
Also called: strength training, protein and exercise, prehabilitation.
Last reviewed 2026-09-16. How this works.
Maintaining muscle during treatment Grade B
Good human evidence, with a limit worth knowing.
Keeping your muscle during treatment helps you cope with it, and there are good reasons to work at it.
Human evidence, stronger for how people function than for how long they live.
The claim
The claim is that eating enough protein and doing resistance work during treatment preserves muscle, and that preserving muscle changes how treatment goes.
What it does
Muscle is not just about strength. Chemotherapy amounts are calculated from body size, and someone with less muscle than their size suggests can be receiving more drug per unit of the tissue that clears it. That is the most concrete reason muscle matters here, and it is a different argument from feeling better.3
The evidence
The evidence that muscle matters is solid. Pooling 38 studies and 7,843 people with solid tumours, low skeletal muscle was associated with worse overall survival and worse cancer-specific survival.2
It reads across to treatment directly. In metastatic breast cancer on taxane chemotherapy, severe toxicity occurred in 57 percent of those with low muscle against 18 percent of the others. In locally advanced head and neck cancer, dose-limiting toxicity occurred in 44.3 percent against 13.7 percent.34
That evidence is about muscle as a marker, not about training as a treatment. What supports the training itself is the international roundtable, which sets out exercise prescriptions for physical function and concludes that training is generally appropriate for people who have had cancer.1
One qualification the pooled analysis makes itself: low muscle tracked with dying sooner more reliably than with the cancer growing sooner. Disease-free survival was borderline and progression-free survival was not significant. Those are different claims and they are routinely reported as one.2
The studies this rests on
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Pooled analysis of skeletal muscle and outcomes in solid tumours2
A meta-analysis, summarising observational studies, measured survival, 7843 participants.
low skeletal muscle index associated with worse overall and cancer-specific survival; disease-free survival borderline and progression-free survival not significant.
hazard ratio 1.44, interval 1.32 to 1.56. overall survival; cancer-specific survival 1.93, interval 1.38 to 2.70
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International multidisciplinary roundtable consensus on exercise for cancer survivors1
A guideline, not a study, summarising randomised trials, measured what patients reported.
sets exercise prescriptions for specific endpoints including physical function, summarising the randomised literature.
What is absent
No randomised trial in this record tested nutrition and resistance training against a survival endpoint. The evidence that muscle matters comes from observing people, not from assigning them to build it.
Scope: nutrition and resistance training, with a survival endpoint.
Established by trial scope, checked 2026-09-16. Result: every study in this record is observational or a consensus statement.231
What to ask
Is there a physiotherapist or exercise programme attached to this service that I could be referred to?
The dish-to-person gap
Eating and training are not compounds that reach a concentration in the blood, so the dish-to-person comparison does not apply.
When to call your team — no warning signs are recorded
If you have started something new, or are thinking about it, the people treating you can only weigh it if they know about it. That is true when nothing has been written down here, and it is most true then.
The register records no warning signs for this entry. Unintended weight loss during treatment is worth a phone call whatever is causing it.
Interactions
Training and eating are not checked against treatment classes in this register. Any new exercise during treatment is worth raising with the team, because they know what your bones and blood counts are doing.
The whole interaction list, and how to turn it into a pharmacy review request.
Find a trial instead
Supervised programmes run inside trials and inside ordinary cancer services. Both are better than working it out alone.
Search ClinicalTrials.gov for recruiting studies of resistance training OR exercise
A trial is the same decision with monitoring, a known preparation and a doctor who knows what else you are taking.
References
Campbell KL, Winters-Stone KM, Wiskemann J, May AM, Schwartz AL, Courneya KS, Zucker DS, Matthews CE, Ligibel JA, Gerber LH, Morris GS, Patel AV, Hue TF, Perna FM, Schmitz KH. Exercise guidelines for cancer survivors: consensus statement from international multidisciplinary roundtable. Medicine and Science in Sports and Exercise 2019 Nov;51(11):2375-2390.
doi:10.1249/MSS.0000000000002116 · PubMed 31626055
How this was reached: transcribed from chapter note, via docs/CHAPTER-NOTES.json, chapter 21 note 3.
Prognostic value of sarcopenia in adults with solid tumours: a meta-analysis and systematic review.
How this was reached: transcribed from chapter note, via docs/CHAPTER-NOTES.json, chapter 11 note 7.
Skeletal muscle measures as predictors of toxicity, hospitalization, and survival in patients with metastatic breast cancer receiving taxane-based chemotherapy. Clinical Cancer Research 2017;23(3):658.
No persistent identifier recorded.
How this was reached: transcribed from chapter note, via docs/CHAPTER-NOTES.json, chapter 11 note 5.
Low skeletal muscle mass is a predictive factor for chemotherapy dose-limiting toxicity in patients with locally advanced head and neck cancer. Oral Oncology, 2017.
No persistent identifier recorded.
How this was reached: transcribed from chapter note, via docs/CHAPTER-NOTES.json, chapter 11 note 6.