powerclean
sorry iaink can you elaborate on why it is not a factor that is important?
i have just read loads of different stuff on training for too long mainly after and hours worth of training muscle building becomes obsolete due to cortisol rising and test dropping, just don't know what to believe :/
Changes in test and corisol are natural and are not a problem. Cortisol is an important hormone and it should rise via hard training.
The whole thing appears to came from Oly lifting and the ruskies. They used this change in hormones after training to program their athletes sessions. They inferred that it was more optimal to do 3-4 short sessions a day instead of a couple of larger ones. Some of there reasoning stems from hormaonal changes. This is far enough when doing the kind of training proffessional oly lifters do; hrs of work a day most days.
So if your trying to get in hrs of hard training in a day, every day, then smaller session seem the way to go for several reasons. For everyone else there is such a large variance in what actually happens that actually limiting your training based on an arbitary figure (1hr) seem pointless. It saws nothing about what you did in that hr; load, volume and rest. Neither the nutritional state you are in prior to training.
Futher I remain to be convinced that cortisol is so bad,. It needs to rise after training. Its a very important hormone. I am sure that chronically elevated cortisol (ie if you had a very stressfull job, or did hrs of hard training every day) then it may become problomatic.
Hormones and training is a complicated field wherein even the experts would debate these issues. Therefore I come down to doing whatever you need to do in a session (and over a week) and have done with. Most of us cannot devote the time to this as a proffessional athlete and compromise is often needed regardless of what we think is optimal or not.
If you want to split up your training feel free to do so. May help your performance i the second session, and it's even more stimulation across the day. However you shouldn't feel like your training is for nothing if it goes over the scared 1hr! :)