Research
Hormonal
In an early stage of overtraining syndrome, the cortisol response decreases despite increased pituitary ACTH release.
Monitoring cortisol levels may be crucial in early detection of overtraining syndrome.
StrongSupportsmedium confidence
the decreased adrenal responsiveness is no longer compensated. The cortisol response decreases.
Why this rating
The claim is based on observed physiological changes during the syndrome.
Source
Autonomic imbalance hypothesis and overtraining syndrome
M. Lehmann et al. · Medicine & Science in Sports & Exercise · 1998
DOI 10.1097/00005768-199807000-00019
otherCited 218×
Read the paper DOI resolved against Crossref · corpus check 2026-06-10
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