Why trained athletes don't get as sore after hard workouts

Original Title

Training Status Influences Regulation of Muscle and PBMC TLR4 Expression and Systemic Cytokine Responses to Vigorous Endurance Exercise

Not medical advice. For informational purposes only. Always consult a healthcare professional. Terms

Summary

When you exercise hard, your body sends out warning signals — like a fire alarm. Trained people’s bodies learn to turn down the alarm so it doesn’t go off as loudly.

Proposed Mechanism
TLR4 activation and NF-κB signaling in response to exercise-induced ligands
Supported by evidence
Endurance training attenuates TLR4 signaling via increased soluble TLR4 (sTLR4)
Supported by evidence
Exercise-induced TLR4 protein loss triggers compensatory TLR4 mRNA upregulation
Suggested

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Quality Analysis
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Publication

Authors

Ducharme JB, Specht JW, Bailly AR, Fennel ZJ, Nava RC, Mermier CM, Laitano O, Deyhle MR