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Nathan Goodyear

Journal of Endocrinological Investigation - 0 views

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    Birth control pills increase resting cortisol levels.  This study looked at salivary and urinary cortisol.
Nathan Goodyear

Depression and cortisol responses to psychological stress: A meta-analysis - 0 views

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    Depression found to have higher cortisol levels compared to non-depressed men and women.
Nathan Goodyear

Self-Reported Depressive Symptoms and Stress Levels in Healthy Young Men: Associations ... - 0 views

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    Elevated morning cortisol associated with depression in men. This study looked at saliva for assessment of free cortisol.
Nathan Goodyear

The acute hormonal response to free weig... [J Strength Cond Res. 2013] - PubMed - NCBI - 0 views

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    This study found that free weights induced a greater increase in Testosterone, GH, and cortisol, than machine.  This study only looked at serum levels.
Nathan Goodyear

Plasma and salivary steroid hormone resp... [J Strength Cond Res. 2011] - PubMed - NCBI - 0 views

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    plasma and salivary cortisol and Testosterone correlate in study of study assessing overreaching.
Nathan Goodyear

Salivary and plasma cortisol and testosterone r... [J Sports Sci. 2013] - PubMed - NCBI - 0 views

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    Plasma and salivary cortisol and Testosterone levels correlated in small study that looked at post-training hormones changes in athletes.  Cortisol and Testosterone peaked in all experimental groups. 
Nathan Goodyear

Chronic distress and acute vascular stress r... [J Hum Hypertens. 2013] - PubMed - NCBI - 0 views

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    Low T and high cortisol associated with increased ischemic events and elevated blood pressure.
Nathan Goodyear

Social support and oxytocin interact to suppress cortisol and subjective responses to p... - 0 views

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    Oxytocin shown to suppress cortisol release in response to psychosocial stressors.  The question is where does this modulation occur.
Nathan Goodyear

Cortisol inhibition of vasopressin and ACTH res... [Am J Physiol. 1990] - PubMed - NCBI - 0 views

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    negative feedback of cortisol on pituitary ACTH and vasopressin release.  Animal study, but shows the central feedback of cortisol on the pituitary.
Nathan Goodyear

HPA axis changes during the initial phase of psychosocial stressor exposure in male mice - 0 views

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    Stress response in a animal model is blunted at the level of pituitary through a decrease in ACTH release and through increase in peripheral metabolism
Nathan Goodyear

Biochemical changes in two subjects succumbing to syncope - 0 views

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    Elevated cortisol associated with syncope in case study. Cause and effect relationship not known.
Nathan Goodyear

Cushing's syndrome: diagnosis and surveillance usi... [Pituitary. 2012] - PubMed - NCBI - 0 views

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    Saliva is "most useful" for those suspected of Cushing's syndrome and those followed after surgery for Cushing's disease.
Nathan Goodyear

Performance of salivary cortisol in the diagnosis of Cushing's syndrome, adrenal incide... - 0 views

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    Salivary hormone testing again shown to gold standard.  This study looked at salivary cortisol levels in those with Cushing's disease, Cushing's syndrome, and with adrenal incidentaloma.   The results make one scratch their head.  The sensitivity and specificities of salivary cortisol were very high, exceeding at least 94% with most > 96 and 97%.  So, why the opposition?  Ignorance I guess.
Nathan Goodyear

Reliability of hypothalamic-pituitary-adrena... [Eur J Epidemiol. 2011] - PubMed - NCBI - 0 views

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    Study finds salivary cortisol testing is "reliable" measure of chronic cortisol production.  This study found similarity between diurnal cortisol and dexamethasone suppressed cortisol and adrenal gland volume based on literature review.
Nathan Goodyear

Salivary cortisol levels and the 2-... [Psychoneuroendocrinology. 2013] - PubMed - NCBI - 0 views

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    This study projected that lower am cortisol in those with long standing depression/anxiety have a more negative long-term prognosis.
Nathan Goodyear

The role of salivary cortisol measured by liquid chromatography-tandem mass spectrometr... - 0 views

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    LC-MS/MS shown to be useful in evaluation in people with suspected elevated cortisol levels.  In this study, they found the dexamethasone suppression test was required.  The point however is that cortisol is a valid medium and this was with LC-MS/MS instead of the more commonly used ELIZA technique.
Nathan Goodyear

Assessment of adrenal function by measurement of sa... [Steroids. 2007] - PubMed - NCBI - 0 views

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    Saliva shown to be "simple, safe, well-accepted and non-invasive" technique to evaluate cortisol levels.
Nathan Goodyear

Correlations between serum and salivary hormona... [J Sports Sci. 2008] - PubMed - NCBI - 0 views

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    salivary cortisol and DHEA correlates well with serum levels before and after exercise.  Testosterone, in this study did not.
Nathan Goodyear

Psychoendocrine and physical performan... [Aggress Behav. 2008 Nov-Dec] - PubMed - NCBI - 0 views

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    Rugby training resulted in a decrease in T:C salivary ratio through a decline in resting testosterone level.  In contrast, competition events increased the T:C ratio primarily through an increase in Cortisol production.
Nathan Goodyear

Measurement of salivary cortisol in 2012 - laboratory techniques and clinical indications - 0 views

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    Review of data analyzing salivary cortisol finds saliva is a great medium, with sensitivity and specificity exceeding 90%, for evaluating the stress response.  So, where is the Louisiana State Board of Medicine, BCBS, and other insurance companies on this.  They are in favor of inferior testing and treatments ie.  hysterectomies for pelvic pain (50% success rate).  

    The great item here is this is not one study but an analysis of multiple studies. This is contrast to "opinions" that often govern the above mentioned organizations/businesses.
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