Mattsirpeace
Level 4 Valued Member
It turns out that the sequence of cellular events that leads to bigger muscles is determined in part by the same "master switch"--an enzyme called AMP kinase--that controls adaptations for better endurance. But you can't have it both ways: the switch is set to either "bigger muscles" or to "better endurance," and the body can't instantly change from one setting to the other. How you start your workout determines which way the switch will be set for the session.
from the book "Which Comes First, Cardio or Weights?" by Alex Hutchinson, Ph.d.
Combining strength and endurance training in one workout is an especially bad idea.* The research is clear: you have nothing to gain and a lot to lose. A mere 2-mile run after a strength workout reduces the strength gains by 10%! If you are confused about the goal of your workout, so will be your body.
Only very easy endurance training--any type of endurance--is acceptable on the same day or the day after a hypertrophy workout.
Pavel, page 217 of Easy Strength
from the book "Which Comes First, Cardio or Weights?" by Alex Hutchinson, Ph.d.
Combining strength and endurance training in one workout is an especially bad idea.* The research is clear: you have nothing to gain and a lot to lose. A mere 2-mile run after a strength workout reduces the strength gains by 10%! If you are confused about the goal of your workout, so will be your body.
Only very easy endurance training--any type of endurance--is acceptable on the same day or the day after a hypertrophy workout.
Pavel, page 217 of Easy Strength