# Vitamin K2 Didn't Help Muscle Recovery in This 12-Week Trial

- **Evidence Level**: Moderate
- **Journal**: Medicine and science in sports and exercise
- **Sample Size**: 71 healthy adults (35 young, 36 older)
- **Published**: 2026-03-05
- **Topics**: supplements, muscle recovery, aging
- **Original Source**: https://pubmed.ncbi.nlm.nih.gov/41843412/

## Summary

After 12 weeks of daily vitamin K2 supplements, neither young nor older adults saw improvements in muscle strength, soreness, or physical function after a tough leg workout. Some secondary measures in older adults showed small shifts in muscle activation speed and a damage marker at 72 hours. But the main outcomes were all null. The researchers say the age-specific signals need more study before drawing conclusions.

## Practical Takeaway

This study suggests vitamin K2 at this dose does not meaningfully improve post-exercise muscle recovery.

---

_Canonical: https://usa-longevity.com/de/research/vitamin-k2-didn-t-help-muscle-recovery-in-this-12-week-trial · Part of Longevity Cities · Updated 2026-03-05_