Kenny C. What about Creatine Phosphate? It's one of the driving fuels behind maximal force production and runs out under the first minute, and roughly needs 3-5 minutes at least to recover.Creatine Phosphate
Creatine phosphate is basically the major building block for ATP. Creatine phosphate regenerates APT.
So yes, it is the driving fuel for ATP. Fast Twitch (Type II A) and Super Fast Twitch (Type II B/II X) Muscle Fiber
These fiber are like shooting stars. You are able to produce force, power and speed quickly.
However, like a shooting star they burn out quickly. Part of that has to do with ATP.
And why no Lunges? Just a personal prefrence, or something deeper?Personal Preference
I personally hate them. I have a long torso and find when I do them I tend to bend forward and use my back more than I should.
However, I realize that just Shear Knee Force
Secondly, the problem most individual have is when they step forward, they dive their knee forward beyond their toes.
When the knee is drive that far forward it places a lot of shear force on the knees, which is not a good thing.
While you can do the same with Step Up, you don't drive your knee forward as much or if you do it not to the same extent you do with a lunge. The Lunge Solution
To insure that you don't drive you knee forward in a lunge, Step Backward. Rear Lunge[/b
]http://www.exrx.net/WeightExercises/Qua ... Lunge.html
I should have listed this in the previous post.
As you can see, the Rear Lunge insures that you shin remains more in a 90% degree angle/perpendicular to the floor. That means the knee remains in a neutral position and is not driven forward. [b]My Criticim
My criticism of this exrx Rear Lunge video is that she even when stepping back she is driving the knee forward a little.
To correct that and insure the shin remains perpendicular to the floor, she need to step back a little further. Dumbbell Vs Barbell Lunge
The Barbell Lunge places some loading on the lower back, especially when you lean forward. In a Step Up or Lunge with will be some or a long of foward lean.
The Dumbbell Lunge loading on the lower back is minimimal, much less than with a Barbell Lunge.
That a Dumbbell Step Up or Lunge place more of the load on the legs and less on the lower back. Depth
The greater the height of the box that you step up on or the lower you go in the lunge, the greater the involvement of the hamstrings.
The hamstrings are heavily activated in getting you out of the hole in a squat. Thus, the lower you squat/lunge, the more the hamstrings are involved.