A recent study from Edith Cowan University in Australia has revealed that a single bout of exercise can significantly suppress the growth of breast cancer cells. This groundbreaking research underscores the potential of physical activity as a complementary approach to traditional cancer treatments.
Study Overview
The study involved 32 breast cancer survivors who had not been engaging in regular exercise. Participants were randomly assigned to perform either resistance training or high-intensity interval training (HIIT) for 45 minutes. Blood samples were collected before, immediately after, and 30 minutes post-exercise to analyze changes in myokine levels—proteins released by muscles during physical activity.
Key Findings
- Elevated Myokine Levels: Both exercise modalities led to significant increases in myokines such as interleukin-6 (IL-6), decorin, and secreted protein acidic and rich in cysteine (SPARC). These proteins are known for their anti-cancer properties.
- Suppression of Cancer Cell Growth: Laboratory tests demonstrated that the blood serum collected post-exercise inhibited the growth of MDA-MB-231 breast cancer cells by up to 30%.
- HIIT vs. Resistance Training: While both forms of exercise were effective, HIIT showed a more substantial immediate increase in IL-6 levels and a greater reduction in cancer cell proliferation compared to resistance training.
Implications for Cancer Treatment
These findings suggest that even a single session of vigorous exercise can activate the body’s natural defenses against cancer. The rapid increase in anti-cancer myokines indicates that exercise could play a role in reducing the risk of cancer recurrence.
While exercise should not replace conventional cancer therapies, it may serve as a valuable adjunct to enhance treatment outcomes and improve overall health during and after cancer treatment.
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