Charlie wrote:
Forgot dhaaga is 60 , ran 18:2x and a 5:3x mile so by Dec with the hammy healed a top guy too.
After a fourth listen to
Iñigo San Millán, Ph.D.: Mitochondria, exercise, and metabolic health
I am convinced so
I ran 90 minutes super easy then sprints in sand 4x30 secs
This was a bump of 30 minutes but went super slow felt great.
gonna stick with xtrn xtrn run for awhile longer but will run 90 minutes now and then heck maybe even longer.
Charlie,
Due to lack of time I do not invest a lot of time in new physiology research. That means, I am no credible scientist in that field at all. However, I like Figure 1 of following paper I came across shortly:
https://www.sciencedirect.com/science/article/pii/S0167488910002600Here, I am seeing that energy deprivation puts the pressure on mitochondria biogenesis. This is old news. Former GDR coaches called the derived training: aerobic training with incomplete rest. My translation was simply: Keep the aerobic biogenesis under pressure. Be tired from volume and not from very high intensity if you want to build up endurance.
In figure 1 you can also see HIF-1 which promotes glycolysis. But I want to be aware of VHL which is a suppressor of HIF-1. VHL itself is triggered by energy deprivation and comes up with pressure for mitochondria biogenesis.
What I want to say is: Why do you do 30 sec burst full out after 90 min? This is kind of contradiction for me. First energy depletion and then build up a lot of acid for boosting production of glycolytic enzyms? Latter one will be suppressed.
If you would do after a 60 min run a set of alactic sprints or diagonals or short strides with active recovery, then I would say: yes, this is booster for FT mitochondria biogenesis. But mitochondria is aerobic only. If I you want to promote glycolysis, I am working towards specific workouts on a specific day. On that day I do not want to push hard on VHL and suppress my glycolytic genesis. However, I am trying to keep the aerobic volume sufficiently high - preferably on the following day - to keep the pressure on the mitochondria biogenesis.
Nonsense? Maybe. I felt for writing a letter for you because I like your contributions and experiments.
Cheers