Intense resistance training boosts recovery in breast cancer survivors

By AI, Created 10:00 AM UTC, May 20, 2026, /AGP/ – A three-month resistance training program improved strength, balance, mobility and quality of life in recent breast cancer survivors, including women who had mastectomy or axillary lymph node dissection, according to a study presented in Seattle this week. Researchers say the results suggest many survivors can safely regain function sooner than traditional guidance implies.

Why it matters: - Breast cancer survivors often face long recovery periods after surgery and treatment. - The study suggests a structured, high-intensity resistance program can speed gains in strength, movement and daily function. - The findings challenge cautious assumptions about how much exercise women can safely do after lumpectomy, mastectomy and axillary lymph node dissection.

What happened: - Researchers presented results this week at the American Society of Breast Surgeons Annual Meeting in Seattle. - The study examined a three-month total-body resistance training program for recent breast cancer survivors. - Participants had undergone lumpectomy or mastectomy, with some also treated with axillary lymph node dissection. - The analysis pooled data from three prior studies of the exercise program, including one that also included a nutrition component. - All studies were conducted at the Allegheny Health Network Exercise Oncology and Resiliency Center in Pittsburgh.

The details: - The analysis included 197 recent breast cancer survivors who completed the program. - Of the participants, 85 had mastectomy and 112 had lumpectomy. - Twenty-six participants underwent axillary lymph node dissection, and 171 did not. - The group without axillary lymph node dissection included women who had no axillary staging or sentinel lymph node biopsy. - Researchers measured body composition before the program using ultrasound and bioimpedance analysis. - The team assessed physical performance with functional movement screening, balance screening and weight-lifting evaluations. - Statistical comparisons found no significant differences in body composition or functional measures before the exercise intervention across surgical groups. - All women showed significant improvement in body composition and function after the program. - Women who had mastectomy and women who had lumpectomy without axillary lymph node dissection showed similar gains across all measures. - Improvements included body mass index, muscle mass, functional movement screening scores, composite weight loads lifted and loads lifted in different movement patterns. - Participants who had axillary lymph node dissection trended lower only on the functional Y-balance test. - By the third week, most women could deadlift 100-pound weights. - By the end of the program, many were lifting 200-pound loads. - The gains were similar across lumpectomy, mastectomy and axillary lymph node dissection groups as exercise demands increased.

Between the lines: - The program was described as far more demanding than most prior exercise studies in breast cancer survivors. - Colin Champ, M.D., said the regimen used a full range of motion and rapidly intensifying requirements similar to early training for professional athletes. - Champ said women treated for breast cancer often lose range of motion and muscle mass after long courses of physically and psychologically traumatic therapy. - Champ said the results show even women with extensive surgery can make large gains in a few months. - Older age and radiation therapy were linked to lower pre-exercise functional movement screening scores. - Those factors explained less of the improvement after the program, suggesting the exercise intervention drove most of the gains. - Champ argued exercise should be part of standard survivorship care.

What’s next: - The findings may push more clinicians to reconsider how early and how aggressively breast cancer survivors can return to resistance training. - The study adds evidence for using structured exercise as a standard part of recovery and survivorship care. - Researchers at the Exercise Oncology and Resiliency Center continue to deliver the same training program to cancer patients.

The bottom line: - A stringent resistance program appears to help many breast cancer survivors rebuild strength and function quickly, even after major surgery.