Relationships between training load, salivary cortisol responses and performance during season training in middle and long distance runners.

PLoS One · 2014 · PMC4143373 · PMID 25153137

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a significant trendno p-value reported

Firstly, our data demonstrates a significant trend in which athletes with higher [average] cortisol levels measured throughout the season were those with lower CMJ scores.

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Quoted from the open-access full text in Europe PMC under the licence the publisher applied. The sentence is reproduced exactly as published; the emphasis is ours.