Was just thinking about this, you need to take 1-2 weeks and choose some basic exercises for each muscle groups (divide them like you usually do) and ask your partner to help you in lifting weight and you just do the negative part.
With time increase the weight, this kind of training will increase your strength.

Update us on how it goes.

Great shock technique, especially for busting through plateaus in my experience. Just make sure you get a decent training partner to spot you.

Negatives are a great way to have your muscles spend more time under tension and can be done with less weight to avoid joint and tendon injury. I used X-Reps, 4X, NA (Negative Accentuated) routines during the first EBC due to tendon issues. The idea is to take a weight you can do 15 reps with but only do 10 (after warmup of course), your first 3 sets are normal 1 sec up, 1 sec down. Then on your 4th set its 1 sec up, 6 secs down. So your muscle is under tension for 7 sec per rep instead of the normal 2 secs. This tends to increase growth/size through increased Sarcoplasm and Myochondria. Check out X-Rep.com for more lifting techniques to shock muscle growth. Some of their ebooks can be found free on the net. Another form of negatives are assisted negatives where you use heavier weight (you could not lift by yourself) assisted by someone on the lift and then you do the return yourself.

Negative training, the concentration of on the eccentric part of an exercise. What I know is that negatives create greater micro-trauma, which is damage to muscle at the cellular level, than the positive(lifting) part of a repitition. It's something you can throw into your routines here and there to 'shock' your muscles. Might help in busting plateaus or strike up some new growth. So yeah...it can help with strength...and growth, as increase in strength most surely will lead to increase in growth(and vice-versa, LOL)

Usually you should do it with a partner...most effective technique can be done, and ALSO the SAFEST as most of the time, the real kicker is to load up the bar with more weight than you can press concentrically, but which you can lower under your control, and then your partner guides you in bringing it back to the 'top' again.

You can do things by yourself, but you gotta make sure you are using weight you are cool with...and basically it turns into a 'controlled counting' technique to your reps as you are slowly lowering the weight(usually something like a 4 sec. count) and then exploding from the bottom portion of the lift thru the concentric part, and then repeating that for your desired # of reps.

Hey!!...howz the diet going?

Its good as a shocker workout. Excites fibers in different manner. Can build some thick gains. Medium weight and good form.

If you take about two seconds to raise a weight during each repetition, you should take four seconds to lower it for negative emphasis.
The negative portion of the rep continues the tearing of the muscle fiber encouraging further muscle growth/size.