When is the best time to exercise during breast cancer treatment?

NCT ID NCT01943695

First seen Jul 10, 2026 · Last updated Jul 10, 2026

Summary

This trial looks at whether supervised aerobic exercise is more beneficial when done during chemotherapy or after it ends for women with early-stage breast cancer. Participants are randomly assigned to exercise during treatment, after treatment, or to receive only educational materials. The goal is to see which timing best improves physical fitness, quality of life, and sleep.

What this could mean

Our plain-language read of the trial. This is informational only — not medical advice or a prediction.

Active substance
Aerobic exercise training
What this could lead to
If it works, this could show the best time to start exercise during breast cancer treatment to improve heart and lung fitness and quality of life.
What could go wrong
This is a small, early-stage trial, so results may not apply to all patients. Exercise during chemotherapy may be harder for some women to complete.

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Conditions

The condition(s) this trial relates to.

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Contacts and locations

Locations

  • Memorial Sloan Kettering Cancer Center

    New York, New York, 10065, United States

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Other studies related to the condition(s) this trial covers.