QBMuscle
Master of His Own Universe
At my gym there are two machines,(one for back and one for abs), both weighted and both in a sitting position. i have tried them several times and noticed that it is quite easy to do all the weight the machines have to offer (200lbs) and you are never put through full extension or flexion, just from sitting straight up to chest just above knees. I was wondering if you guys/gals think these machines are helpfull to strenthening abs & back or just harmful to your spine, cause i never really feel any kind burn or exhaustion in the target muscles, just an aching feeling in my back.?