Jason, my question is about running. Let me start by saying that I have always had a
problem with leg development.
I have squatted heavy,
squatted light and my quads
tone up nicely, but my hamstrings never develop (even though I have good glute
About 12 weeks ago I began a running program. I run with a high
intensity for around 2-3 miles (at 6:30-7:00 pace) about 6 times a week. I
charge the hills (to feel a burn) and I also try to do a day of explosive sprint
work (the sprints I have been doing for about a year).
I was not expecting this
because it goes against what i have been told about running, but my legs have
increased in size dramatically. They look more dense, and for the first time i
have some real hamstring development.
Overall I have put on 10 lbs in the 12
weeks. I am still lean so I know most of this has got to be leg muscle. A few
friends of mine (a soccer player, a cross country runner, and a triathlete) have
experienced the same. I have read a few running forums where there seems to be
no shortage of the same experience.
However, I also read about people saying
that they lose leg size. I guess my question is about the science behind this.
Does it come down to calories in-calories out? Can size be gained by any
strenuous exercise (despite the load level) as long as the food is there?
Because here we can have two individuals with the same exercises but with
different results. Is it muscle fiber composition? very confusing! Thanks for
taking the question.