# How Exercise Quiets a Muscle-Wasting Inflammation Signal in Older Women

*CXCL2 is a modifiable driver of sarcopenic inflammation attenuated by exercise in older women: Integrated transcriptomic and experimental evidence.*

- **Evidence Level**: Moderate
- **Publication Types**: Journal Article
- **Journal**: Journal of sport and health science
- **Sample Size**: Older adults across two human studies plus mouse and cell experiments
- **Authors**: Lee J, Chun SW, Choi S, Kang JS, Park SJ, Yang YR, Lee HR, Lee KH
- **Published**: 2026-07-22
- **Topics**: sarcopenia, exercise, inflammation
- **DOI**: https://doi.org/10.1016/j.jshs.2026.101159
- **Original Source**: https://pubmed.ncbi.nlm.nih.gov/42486363/

## Summary

Scientists found a specific inflammation signal called CXCL2 that climbs as muscle loss gets worse with age. In older adults, higher levels tracked with weaker strength and worse mobility. A year of structured exercise sharply lowered this signal and improved strength, while non-exercisers kept declining.

## Practical Takeaway

This study suggests regular structured exercise may help lower inflammation tied to age-related muscle loss.

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_Canonical: https://longevity-switzerland.com/en/research/how-exercise-quiets-a-muscle-wasting-inflammation-signal-in-older-women · Part of Longevity Cities · Updated 2026-07-22_