Back extension machines are a crucial piece of gym equipment ... (back muscle right under your shoulders) and erector spinae ...

WHEN IT COMES to training your lower back, it doesn’t get more ... If you have an access to a back extension machine (most ...

Gym Smarts: Lower Body Knee Extensions This is the knee extension machine which is use for building quadriceps strength. Sometimes we will adjust this machine so you can't do the last part of the ...