I can do it, i just cant do them for that many reps.....
Tempo is a major factor, at that weight i cant stay in the hole........ I have to hit ATG and get out or I might get stuck....
I do alot of statics and slow eccentrics with lower weight, it really seems to work for me.....
Next week, I will put 225 on there and bust out a set after warmups...
Plagersim at its best-
University of Alabama at Birmingham did a study on 10 male and female subjects, who did 8 heavy sets of squats per workout. One workout they did concentric, the other eccentric only contractions. They measured the amounts of IGF-1, IGFBP-4, and Androgen receptors in the muscle. The negative rep stimulated IGF-1 and lowered levels of IGFBP-4(which binds to IGF-1 to make it inactive) better than the concentric. The positive rep increased androgen receptor density (making it more responsive to testosterone) than the negative. From this study, we can see that eccentric reps induce growth more by IGF-1 and the positive mainly from testosterone.
Another study was done at UC Irvine by Ken Baldwin and other scientists, to find the chemical reactions behind eccentric contractions. They also found that they had a significant increase in IGF-1 over positive reps, but also in increasing MGF(mechano growth factor) and the lowering of Myostatin(an important chemical that regulates muscle growth).
Pics tomorrow morning........