The thing that will most affect your performance is your head; meaning that if you think the expedition will affect your race then it will!
I have had a problem in the last few years in that there is a Marathon that I cannot resist doing the day before a fast 10k that my club-mates treat as an end of year beano. I have had no problem banging out a pb each time! Not sure why!
I would say that I would rather do the 10k the day after than two or more days after when I have stiffened up a bit. So doing the 1500m the day after would be OK for me. However one thing that does affect my performance is lack of sleep (an occupational hazard for me) this could be a bigger problem than the distance you are covering. Another problem could be blisters? How good are your boots? Unfortunately if blisters happen they happen.
There is certainly nothing that you can do in 24 hours that will significantly affect your recovery. But on the positive side the expedition will take your mind off what is obviously an important run and may even improve your time?
If you go into the 1500m with any attitude other than 'I am going to nail this regardless of anything' then it is a waste of effort.
I am very interested in how you are Peep xxx? I cannot imagine how it affects people who were previously fit and well to have a catastrophic event that changes their lives.
I am very aware that the stresses and strains of my job and in particular the hours I work are affecting my health. I like to think that running and eating well protects me from harm, but then I read your story.
Many of my colleagues are dropping by the wayside, most recently with a brain aneurysm and I am wondering whether I should pack it in and do something less stressful.
Here is a general article on altitude training, it is worth noting the first bit of the article which says that altitude affects different people in different ways. Assessing what sort of person you are is not easy.
I cannot remember the toxic dose of iron but it is a lot! Far more than the therapeutic dose Dave 68 certainly not a 'go to' medication for self harm.
The causes of an underactive thyroid are not well understood certainly many people suffer from it. We know that the thyroid can be damaged by radioactivity, other causes suggested are pollution from everyday substances affecting a persons endocrine system. The endocrine system is in itself complex with the hypothalamus, thyroid, adrenal, pituitary and other glands working together to achieve homeostasis.
As I understand overtraining can cause stress to your endocrine system and the effects of this stress can be mitigated by meds such as thyroxine and cortico-steroids. Whether this is wrong, immoral or bad for your health is worthy of discussion.
But one thing I have found out is that taking meds like anabolic-steroids and growth hormone can affect your endocrine system, so some athletes may be taking thyroxine to mitigate the effect of or cover their use of much more useful performance enhancing drugs.
I certainly have no problem with someone competing with meds like thyroxine, salbutamol, seretide etc. as long as they are prescribed and used therapeutically.
But the idea that a person can have their testosterone levels 'tweeked' therapeutically with Andriol is stretching things for me. As ever where to draw the line is complex and needs to be discussed