Originally Posted by Machka
Leg extensions can be fine as long as you do not straighten your leg. The ideal is to stop short of a full extension by 10-20 degrees.
In your link from your first post it says to only do the last 15 degrees of the extension, and here you are basically saying the ideal way to do it is to skip that whole portion of the movement that the VMO kicks in. If you skip the last 10-20 degrees you are not working the VMO at all and just building up the other parts of the quad. I thought that the point of this was to stop neglecting the VMO as cycling already does...