Posted by Juerg (207.194.220.97) on November 14, 2003 at 09:51:57:
In Reply to: Psychological testing... posted by DanZ on November 12, 2003 at 19:16:07:
Hi Dan
here another inside look from a paper written by Mark Tremblay and amuel Chu ( hormonal response to exercise:
Just a short quota out of the article :
Mental health:
" Psychological stress stimulates the hypothalamic-pituitary-adrenal axis and the adrenal medulla to secrete stress hormones. In most exercise-related hormone studies,blodd sampling is required.Venipuncture is a stressful procedure for most individuals.When testing for stress -related hormones ( e.g. adrenocorticotropic hormone,cortisol,catecholamines) ,it is important to get the blood sample before the hormone surge related to the venipuncture has circulated to the vein where the sample is being gathered.Both theacute and chronic stress tevel of an individual,whether related to the exercise intervention or to other events in the person's life ,could interfere with experimental outcomes. Altered hormone profiles have also been seen in depressed individuals. For example, lower free thyroxine levels have been observed in depressed adolecents when compared to matched controles. "
This short info may give a very interesting inside view about testing of any hormonal effects in the human. If you add the analytical precision for selected hormones in tests and the precision you can test them , you have always the question about drug testing .
Last example : State-of-the -art analytical precision ( CV % for testosteron is 10.5 , for growth hormon ( GH 11%, for Cortisol it is 9 % .