Overtraining Syndrome - 0 views
www.ncbi.nlm.nih.gov/...PMC3435910
overtraining syndrome OTS exercise athletes cortisol adrenals Testosterone Testosterone:Cortisol hormones
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Alterations in the HPA and hypothalamic-pituitary-gonadal axes with a resultant decrease in testosterone:cortisol ratios have been implicated in OTS. Proinflammatory cytokines are potent activators of the HPA system, which cause release of corticotropin-releasing hormone, adrenocorticotropic hormone, and cortisol. These cytokines suppress testosterone through central inhibition
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Some have suggested that a decreased testosterone:cortisol ratio can be diagnostic of NFO and/or OTS. However, the ratio represents the physiologic strain of training rather than the athlete’s maladaption to that stress
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A prospective study found a clinically significant increase in overnight urinary cortisol:cortisone ratio during a high training load period in triathletes, who subsequently underperformed and reported fatigue
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It is proposed that cytokines may inhibit 11β-HSD2 activity and result in relative increases in cortisol and, hence, catabolism